#linuxcnc Logs
Aug 03 2023
#linuxcnc Calendar
12:00 AM solarwind: and now... time to measure the AC waveform of my everlast powertig 325ext because its "advanced square" is wildly different than its "soft square" when welding aluminum or TIG brazing ERCuSi-A
12:10 AM solarwind: Can't figure out why "advanced square" causes black soot to form while TIG brazing. And it seems to put a lot of heat into the aluminum. The other modes work as expected like any other welder
12:10 AM thorhian[m]: Looks like someone has implemented initial rest milling support in freecad’s path workbench. Now that 0.21 just released, it can get worked on and merged to master. I really need to build that fork from the pull request and try it out. It would make my life so much easier.
12:12 AM roycroft: i have some fairly high intensity led lamps on tripod stands
12:12 AM roycroft: so it should be easy for me to test with more lights
12:12 AM roycroft: another thing that makes it hard for me to weld is that i have to turn off the overhead lights because of the glare
12:12 AM roycroft: so my crappy ambient light is even crappier
12:14 AM solarwind: PAR20 type have good intensity
12:14 AM XXCoder: wonder if you should get light scatters for top lights, or boxes to make it go stright down (slightly dimmer but no glares)
12:14 AM roycroft: my new gmaw machine did great in my initial test, so i'm pretty excited about that
12:15 AM roycroft: i just welded a couple pieces of 1/4" angle together at 90 degrees, and got a really nice smooth bead with full penetration in one pass
12:17 AM solarwind: Which machine did you buy?
12:17 AM XXCoder: gmaw is weld machine?
12:18 AM roycroft: harbor freight titanium mig 170
12:18 AM solarwind: Gas Metal Arc Welding
12:18 AM roycroft: gmaw is mig
12:18 AM roycroft: well
12:18 AM roycroft: mig is gmaw :)
12:18 AM XXCoder: ok
12:18 AM roycroft: https://www.harborfreight.com/mig-170-professional-welder-with-120240v-input-57864.html
12:18 AM roycroft: it was on sale
12:18 AM solarwind: We avoid saying MIG because it's not always "inert" gas
12:19 AM solarwind: so instead of saying MIG/MAG, we use the more scientific term GMAW which describes the process more accurately
12:19 AM roycroft: i tend to use the official terms most of the time
12:19 AM roycroft: because yes, they are more accurate
12:19 AM roycroft: tig = gtaw
12:19 AM roycroft: gas tungsten arc welding
12:21 AM roycroft: if i use flux core wire in my new machne it's fcaw
12:21 AM roycroft: "stick" welding is smaw - shielded metal arc welding
12:23 AM roycroft: my old gmaw machine is a lincoln electric transformer model, but it's a 120vac input machine, so not very capable
12:23 AM roycroft: i think the max output is 90a
12:24 AM roycroft: the new one is 300a
12:24 AM roycroft: er, 200a
12:25 AM roycroft: my other welder is an everlast powertig 250
01:51 AM randy: morning
01:54 AM solarwind: You'll never guess what I found
01:54 AM solarwind: "sine" and "triangular" labels on the everlast machine are reversed LOL
01:54 AM solarwind: no one would ever know unless you hooked up an oscilloscope to it
01:55 AM solarwind: and "soft square" is extremely round on the edges, might as well call it a sine wave
01:56 AM solarwind: that explains what's going on
01:56 AM solarwind: "advanced square" is just a regular square wave with hard switching and lots of inductive high current spikes as the transistors switch as you would expect
01:59 AM solarwind: zincboy_ca_on[m] I'm using a current probe to measure this, but I want to get a direct measurement. The HF transformer inside should be fully isolated right?
01:59 AM solarwind: zincboy_ca_on[m] so I can hook up a current sense resistor and measure it that way
01:59 AM solarwind: I have HV probes but the current waveform would get lost in the noise floor obviously
02:00 AM solarwind: Oh I have a medical grade isolation transformer. I can float the scope, although that's a bad way to do it, it'll work just fine for one test
02:22 AM Deejay: moin
02:28 AM -!- #linuxcnc mode set to +v by ChanServ
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02:59 AM travis_farmer: Morning :coffee:
03:36 AM Deejay: morning
03:36 AM Deejay: isn't it night at your location? ;)
03:36 AM travis_farmer: 04:34
03:37 AM travis_farmer: i am always up early
03:43 AM Deejay: oh wow!
03:43 AM Deejay: not my time :-)
03:46 AM solarwind: travis_farmer early, late, it's all relative
03:47 AM travis_farmer: true...
04:21 AM Tom_L: morning
04:38 AM monke_: morning o/
05:04 AM JT-Cave: morning
05:05 AM travis_farmer: 47F/77F @ 100%rh
05:42 AM JT-Cave: hmm dawn
06:06 AM JT-Cave: rooster just crowed
07:31 AM travis_farmer: well, money is so tight at the moment, and my credit-line is maxed, so i have had to put my 5th-wheel camper renovation project up for sale, as well as some other items... being poor is a terrible thing...
07:41 AM tofohty1 is now known as tofohty
07:47 AM zincboy_ca_on[m]: Current probe is the right way to do it. Using a resistor and voltage probe will not work as well due to the EMI inside the machine. You need a really small current loop to avoid picking up all sorts of noise on the voltage probe. Also, I would not bet that anything inside is fully isolated unless I had the schematic in front of me. Anything beyond the bandwidth of a decent current probe is way outside of anything you would
07:47 AM zincboy_ca_on[m]: care about in a welding waveform.
07:53 AM * JT-Cave starts his chicken day
08:59 AM JT-Cave: hmm we just got some rather large rain drops
09:13 AM * Fabio[m]1 uploaded an image: (1858KiB) < https://libera.ems.host/_matrix/media/v3/download/jauriarts.org/JVpNGKfKZJNgfEMcpStfJHLW/IMG_8173.jpg >
09:13 AM Fabio[m]1: Is there any use for this or is it locked behind proprietary software?
09:33 AM Tom_L: partly cloudy and a slight chance of rain later this afternoon
09:41 AM CaptHindsight[m]: Fabio: https://www.ia.omron.com/data_pdf/cat/ne0a-scpu01_ds_e_6_4_csm1764.pdf?id=1984 useful to and/or the inputs for safety circuits
09:43 AM CaptHindsight[m]: another product where you have to dig through multiple docs to see what you can do with it
09:45 AM CaptHindsight[m]: they have to dumb things down so it fits the ladder logic mindset and get users to take their training courses
09:53 AM * JT-Shop wonders why some folks assume because you can program a plc you're stupid?
09:59 AM * JT-Shop stops wondering after a nano second
10:01 AM * travis_farmer wonders why when i tell someone i am autistic, they think i am stupid?
10:01 AM JT-Shop: some people don't have a clue
10:01 AM rmu: i have seen my share of stupid things doen with PLCs, but that doesn't imply you have to be stupid to use them.
10:01 AM JT-Shop: aye and I've see my share too
10:03 AM * travis_farmer gets lunch while he runs a backup of his server...
10:04 AM rmu: i knew some "PLC programmers" that had a particular mindset like "we are not just plain mortal electricians, we are PROGRAMMERS"
10:04 AM JT-Shop: lol
10:05 AM rmu: and those guys you shouldn't trust
10:07 AM JT-Shop: revere had a loader system for 1/2 of the presses that a guy programmed that was huge and would crash regularly
10:08 AM JT-Shop: they didn't have the tags and the program was so convoluted all I could do was just reset it for them until they bought a loader system from me
11:35 AM Deejay: re
12:16 PM JT-Shop: ra
12:16 PM travis_farmer: ro
12:24 PM Tom_L: rm
12:25 PM travis_farmer: rm -fR *
12:40 PM travis_farmer: where did everybody go??? i think i deleted them... :-(
01:04 PM Deejay: you don't have permission to remove me!
01:36 PM solarwind: Hmmmm are there any metal plates similar to corrugated cardboard?
01:37 PM solarwind: Seems like an excellent way to increase rigidity with little material
01:39 PM solarwind: CaptHindsight[m] also I want to use my hot water pressure washer to start cleaning that 3 ton vertical/horizontal mill that needs to be restored
01:39 PM solarwind: It mostly has a lot of grime, metal chips everywhere, hardened grease/oil
01:40 PM solarwind: My only concern is rust
01:41 PM solarwind: Would be kind of cool to make some kind of enclosure that would allow me to use machine coolant as the cleaning fluid in the pressure washer, then collect it, filter it, and recirculate it
01:41 PM solarwind: But that's probably way too much work for this. Just need a way to clean it and quickly dry it perhaps to prevent rust.
01:41 PM solarwind: I have no shortage of clean, dry, compressed air
01:43 PM perry_j1987: solarwind take a look inside a car battery you can find metal "lead" corrugated plates haha
01:43 PM solarwind: perry_j1987 yeah, I meant more for structural steel or perhaps aluminum
01:43 PM solarwind: Although it shouldn't be too hard to make with a press brake and thin sheet metal
01:44 PM solarwind: speaking of which, I used some thin sheet metal, about 1mm thick, as a "mat" for welding a few pieces of aluminum on
01:44 PM solarwind: The steel was only subjected to the temperatures of aluminum welding, but somehow it warped all over the place even though it was not melted at all.
01:45 PM solarwind: It's cold rolled steel sheet. Is this due to the localized "stress relieving" / "annealing" that was happening when I was welding on it?
01:46 PM solarwind: I want to flatten it out again, so is it just a matter of uniformly heating the whole sheet to relieve stress? Or is this going to require some kind of mechanical work to flatten it out?
01:47 PM CaptainHindsight: I haven't been on Discord since January, must be a zillion messages
01:50 PM CaptHindsight[m]: solarwind: something like a small plastic swimming pool?
01:50 PM CaptHindsight[m]: or a giant clear baggie
01:51 PM solarwind: CaptHindsight[m] for recycling coolant?
01:51 PM CaptHindsight[m]: yes
01:51 PM solarwind: Hmmmm you may be onto something
01:51 PM solarwind: Maybe not so ridiculous after al
01:52 PM CaptHindsight[m]: solarwind: https://www.plascore.com/honeycomb/honeycomb-cores/aluminum/
01:52 PM solarwind: Is coolant designed to not degrade at like 60°C?
01:52 PM JT-Woodshop: yes they make a honeycomb sheet that is rigid and light
01:53 PM solarwind: JT-Woodshop thanks, I'll look into that]
01:53 PM CaptainHindsight: https://www.plascore.com/honeycomb/honeycomb-cores/aluminum/
01:53 PM JT-Woodshop: I used it building destroyer cabin dividers
01:54 PM solarwind: I think I'm seriously considering building this enclosure. It would work great for wet sandblasting too
01:54 PM CaptHindsight: https://www.plascore.com/honeycomb/honeycomb-cores/aluminum/
01:54 PM CaptHindsight: looks like the bot blocks links sometimes
01:55 PM solarwind: CaptHindsight I see all your links
02:45 PM Unterhaus_ is now known as Unterhausen
02:47 PM Tom_L: honeycomb is widely used on aircraft
02:49 PM simian[m] is now known as simian_ook0[m]
03:16 PM CloudEvil: I do wish it was cheaper
03:54 PM CaptHindsight[m]: metal honeycomb bees are just more expensive to farm, they don't just volunteer you know
03:54 PM roycroft: their stings hurt more too
03:55 PM CaptHindsight[m]: where needles come from
03:57 PM * JT-Shop tries to find inspiration for a small bulletin board with glass doors... but is not having any luck
04:52 PM JT-Shop: https://assets.wfcdn.com/im/42451983/resize-h600-w600%5Ecompr-r85/9570/95700768/Britany+Dining+Cabinet.jpg
04:52 PM JT-Shop: https://assets.wfcdn.com/im/31252333/resize-h600-w600%5Ecompr-r85/1176/117621222/Dining+Cabinet.jpg
06:11 PM * Tom_L wonders why a bulletin board needs doord
06:11 PM Tom_L: doors
06:19 PM robotustra: metal honeycomb bees collect oil instead of honey
06:32 PM bjorkintosh: Tom_L, perhaps for outdoor display?
06:38 PM Tom_L: so it is so hot here someone left a makeup mirror in the back seat of their car and it caught the car on fire from the sun's reflection
06:41 PM robotustra: concave mirror?
06:41 PM robotustra: plastic bottle of water also works good for that
06:44 PM robotustra: I heared there is a new GUI for linux cnc
06:44 PM robotustra: called basic<something>
06:45 PM robotustra: basic probe
06:47 PM XXCoder: Tom_L: to prevent danage by people. or any additional postages
06:48 PM XXCoder: example sign for offical usage only
06:50 PM robotustra: doors and locks are against theft as usual
06:51 PM robotustra: anybody did a concrete machines?
06:52 PM robotustra: not epoxy granite but concrete one
06:52 PM robotustra: or betone
06:53 PM XXCoder: I remember there being plans for concerete lathe from war era
06:53 PM XXCoder: its interesting and super adjustable due to problems with designing machine using concerete
06:53 PM XXCoder: minium metal because needed metal for tanks etc
06:55 PM robotustra: I wanted to remake my old router but decided to build new one from concrete
06:55 PM robotustra: and finally use lcnc on it :)
06:56 PM XXCoder: nice
06:56 PM XXCoder: https://www.instructables.com/Concrete-Metal-Lathe/ small one. wartime one is much larger
06:57 PM XXCoder: https://makezine.com/article/digital-fabrication/machining/the-concrete-lathe-project/ another one
06:57 PM robotustra: XXCoder, yep, I saw this lathe, as for me the quality of casting is not very good
06:57 PM XXCoder: yeah rather ugly
06:58 PM XXCoder: cant find better pictures than this https://www.engineeringforchange.org/wp-content/uploads/2011/07/Screen-Shot-2015-10-02-at-9.46.30-AM-300x199.png
06:59 PM robotustra: this guy did better job https://www.youtube.com/watch?v=3JwQ6bVTlHI
07:00 PM XXCoder: indeed
07:01 PM robotustra: I'm thinking about not very big one, 600x450x500 mm, with envelope 450x220x150 mm
07:02 PM XXCoder: im sure whats important is adjustability
07:02 PM robotustra: according to preliminary calculation only the concrete will be aroun 85 kg
07:02 PM robotustra: sure, I know how to adjust
07:03 PM XXCoder: no doubt on that. I meant the machine having adjustability :D
07:03 PM robotustra: I decided to leave the pockets for rails and screws and glue them on place after the beton work is done
07:05 PM robotustra: for fixed portal there in the only crucial paramenter is a squareness between axii
07:05 PM XXCoder: hm bridge is down a bit
07:05 PM XXCoder: https://media.discordapp.net/attachments/970073318810075149/1136811795860963409/lathecon_upscayl_4x_realesrgan-x4plus.png?width=1001&height=664
07:05 PM XXCoder: upscaled using ai. looks pretty good, just few odd stuff
07:07 PM robotustra: sure, as soon as I got from information the main issue for betone machines it's a crackability of betone on vibrations
07:07 PM robotustra: but this seems could be easily fixed by admixtures
07:07 PM robotustra: and reinforcement bars
07:08 PM XXCoder: I guess that can be fixed by scaling particles sizes
07:08 PM XXCoder: bigger rocks, small, tiny, sand
07:08 PM XXCoder: "sand" ones thats rough particles not smooth ones from beach
07:08 PM robotustra: yes, this is also, but I think metal mesh inside casting will do the thing also
07:09 PM XXCoder: yeah reforcement definely needed also
07:09 PM robotustra: yep, and rocks should be sharp and rather big
07:09 PM robotustra: admixtures decrease porosity and prevent cracking
07:10 PM robotustra: plastifiers
07:11 PM robotustra: statistics shows that I build about 1 cnc machine in 5 years :)
07:11 PM robotustra: or just a machine :)
07:13 PM XXCoder: :)
07:13 PM robotustra: hope I'll make this one faster
07:15 PM XXCoder: as long as good parts ;)
07:15 PM XXCoder: its not any% speedrun :D
07:15 PM robotustra: no, I'll use crapy chinise parts
07:16 PM XXCoder: I meant parts you can make on it being good :D
07:16 PM robotustra: may be not so crapy, but my goal is 0.1mm precision fo 400mm part
07:18 PM robotustra: they will, even on old flexible machine I can get 0.02mm for small parts, but for bigger ones I have 0.3mm error
07:18 PM XXCoder: cool :) hope you succeed
07:18 PM robotustra: 0.3mm for 200 mm part
07:18 PM robotustra: I have no choise
07:19 PM robotustra: actually nodoby have a choise :)
07:19 PM XXCoder: lol joe finally reveals how he did the fake perpetual motion https://www.youtube.com/watch?v=3HkcedKocIY
07:19 PM XXCoder: lol
07:20 PM robotustra: I like his lessons in machining
07:21 PM robotustra: got a lot of from his channel
07:22 PM robotustra: unfortunately there are not so much quality channels about machining on youtube
07:30 PM XXCoder: yeah and I watch many of those
07:31 PM XXCoder: some I just gave up, like oxtools because of couple years of nothing but talk videos, and abom due to constant new tools bragging
07:36 PM robotustra: ppl are not filming thier interesting projects anymore
07:36 PM robotustra: only kids with one day builds
07:37 PM XXCoder: you know of inheirance machining?
07:38 PM XXCoder: its one of few channels I watched ALL videos when I found out about it. most channels I just watch few more interesting ones.
07:43 PM robotustra: yes I saw IM channel, but he is more about toolmaking, and beauty of craft, but quality of content is nice
07:44 PM XXCoder: its still very nice machining video
07:44 PM robotustra: I have a scale of things' complexity, the IM is on the 1st level - shaping of materials
07:44 PM XXCoder: dont think he will ever go cnc lol
07:44 PM robotustra: why not? too oldfashioned? at least he has DRO
07:46 PM robotustra: the role of cnc is overvalued for hobbiests like me with 1-2-5 parts production batch
07:47 PM XXCoder: not at all, just different design and make philosphy
07:47 PM XXCoder: and yeah if 1-10 parts cnc isnt great, unless its insane to do manually, like 1,000 holes
07:48 PM robotustra: yep, or the part is difficult to make manually like pcb
07:49 PM XXCoder: indeed
07:49 PM XXCoder: if he ever gets one, i bet it would be smallish one, like what blonditech has
07:50 PM XXCoder: *hack
07:50 PM robotustra: IM usually do a single tool or artefact and just polish it till the shine
07:50 PM robotustra: *does
07:50 PM robotustra: you bean blondihack?
07:50 PM robotustra: *mean
07:51 PM robotustra: even blondihacks
07:53 PM robotustra: I don't watch her too much, she is rather explaining for me things for newbies
07:54 PM robotustra: and I always have a question where people get money to run such shop and time to film all the stuf they are doing
07:55 PM robotustra: money, I hean a source of existance, not money for tools/machines
07:55 PM robotustra: *mean
07:56 PM robotustra: to make a video per week it could take 8+ hours I think
07:56 PM XXCoder: yeah on bolindihack
07:57 PM XXCoder: sure, im not that advanced so its great for me :)
07:57 PM XXCoder: I worked as cnc machinist for 5 years
07:58 PM robotustra: XXCoder, what type of machines?
07:58 PM robotustra: haas?
07:58 PM roycroft: i bet quinn brings in $30k/year or more publishing blondihacks
07:58 PM XXCoder: also ;)
07:58 PM XXCoder: from huge like a61 to tiny office mill haas
07:58 PM roycroft: the successful youtubers make pretty good money
07:59 PM roycroft: more from patreon and merch than from direct youtube revenue
07:59 PM robotustra: roycroft, 30k/year it's not a huge money
08:00 PM XXCoder: i bet she also has side-job of actual job ;)
08:00 PM roycroft: she's also not one of the major youtubers
08:00 PM roycroft: and youtube is not her primary job
08:00 PM robotustra: it looks like
08:00 PM roycroft: but it's a decent side hustle
08:00 PM CloudEvil: Need to have a hellahuge channel so you can retire on youtube direct revenue alone in the lifespan of the average channel.
08:00 PM roycroft: keeps her in machines and materials, and some cash in her pocket
08:00 PM robotustra: which takes away all the rest free time
08:01 PM CloudEvil: Patreon/... can change the numbers somewhat.
08:01 PM roycroft: patreon is the primary revenue source these days
08:01 PM roycroft: sponsorships help a lot too
08:01 PM roycroft: getting money out of google is like getting our former president to tell the truth
08:01 PM robotustra: is there any "advenced youtuber" in here or it's all just sofa rants?
08:02 PM roycroft: i don't see anyone ranting
08:02 PM XXCoder: no idea what sofa rants means
08:02 PM roycroft: i'm going to assume that means talking out one's arse
08:02 PM robotustra: :)
08:02 PM roycroft: i.e. completely uninformed speculation
08:02 PM robotustra: sure
08:02 PM robotustra: you got the idea
08:03 PM roycroft: and i'm going by what many youtubers say, and what articles about social media publishing say
08:03 PM roycroft: i'm not making stuff up
08:03 PM robotustra: I see
08:03 PM CloudEvil: A sofa rant might be 'youtubers all have it so easy' IMO. Informed comment around what actual popular youtubers say and having looked up the payout rates and ...
08:03 PM roycroft: i don't need to fly into the sun to know that it's hot
08:04 PM robotustra: I don't know if youtubers even with patreon can get 50-60k per year
08:04 PM roycroft: i have no aspiration to become a youtube celebrity, but i am curious about how they generate their revenue
08:04 PM CloudEvil: A tiny, tiny, tiny minority of any sort of streamer got lucky enough to not have to put the effort in.
08:04 PM roycroft: curious enough that i've done some research
08:05 PM roycroft: i have a reasonable sense of how they get their revenue streams
08:05 PM XXCoder: honestly I dont care how much money youtuber earns. if its something I enjoy, ill watch, if not, not watch. thats it
08:05 PM roycroft: part of the curiosity, btw, is so that if i decide to help out a youtube i'll know what to do to actually get my help to them, and not jsut to google
08:05 PM roycroft: what i have NOT figured out is how/why some youtubers are so popular and some are not
08:05 PM robotustra: to pick up money on youtube - it like a second job
08:06 PM roycroft: i mean, there's the obvious stuf
08:06 PM XXCoder: roy many movie makers want to know too :D
08:06 PM roycroft: if you have the personality of a rock you're not going to be popular
08:06 PM robotustra: could take all free time actually
08:06 PM roycroft: but even if you have a great personality, it seems really hit and miss
08:07 PM robotustra: 1) good personality 2) good content 3) a video every week
08:07 PM roycroft: as a recent example, i had been watching some videos from junkyard mook
08:07 PM roycroft: she's cute and a car nerd, and pretty funny
08:07 PM robotustra: it's difficult to comply
08:07 PM roycroft: her videos are enjoyable
08:07 PM roycroft: and she does ok with them
08:07 PM roycroft: but then i found out her channel is a spinoff of her partner's channel - junkyard digs
08:08 PM roycroft: so i started watching some of those to see what they're about
08:08 PM robotustra: her videos are rather educative for kids
08:08 PM roycroft: and kevin, the guy who does the videos, has a great personality and is entertaining
08:08 PM XXCoder: manual milling is my weak area
08:08 PM roycroft: but he's not a great mechanic
08:08 PM roycroft: yet he gets over a million views per video
08:08 PM CloudEvil: https://www.youtube.com/@TheGayestPersononYouTube amused me. Most excellent thermite videos.
08:09 PM roycroft: i don't get why he's so popular
08:09 PM XXCoder: looked though youtube channel. meh cars arent my thing
08:09 PM CloudEvil: Alas his channel went nowhere.
08:09 PM roycroft: there are other mechanics with great personalities who do more interesting stuff and get 30k views per video
08:09 PM CloudEvil: 'The algorithm'
08:09 PM CloudEvil: A large slice of it is when you started consistently uploading videos.
08:09 PM XXCoder: I rather try channels people recommands than bots
08:10 PM roycroft: yeah
08:10 PM XXCoder: few of channels I watch is thanks to people here
08:10 PM XXCoder: I think blondihack is due to roy here
08:10 PM robotustra: got this guy recently: https://www.youtube.com/@kerkkonenahaima7322/videos
08:10 PM robotustra: but there are not so much videos
08:10 PM XXCoder: inheirance machining from clickspring discord
08:10 PM roycroft: and the popular machining ones that we discuss here regularly tend to publish a new video every week, religiously
08:11 PM XXCoder: clickspring by unknown, been too long ago, watched for years
08:11 PM roycroft: but then there's simone gietz, who is insanely popular, but publishes a video randomly every few weeks or so
08:12 PM roycroft: giertz, i think it's actually spelled
08:12 PM XXCoder: yeah. I love blondihack as if project is too large she alternates between 2 projects
08:12 PM roycroft: it's pronounced "yetz"
08:12 PM robotustra: the thing is - to make good money on youtube it doesn't mean the content will be useful for brain, rather entertaining
08:12 PM roycroft: she is swedish, but that's not how a swede would normally pronounce thatname
08:12 PM roycroft: entertaining is the primary thing
08:13 PM robotustra: no, entertaining is not what I expect from video
08:13 PM roycroft: if you're boring it doesn't matter how smart you are, people will tune you out
08:13 PM XXCoder: clickspring is from era I watched only captioned channels, as autocaptions wasnt a thing, then way too crappy
08:13 PM roycroft: you should expect entertainment from a video
08:13 PM robotustra: rather new skills and new info, which could be applies
08:13 PM roycroft: that too
08:13 PM robotustra: *applied
08:14 PM roycroft: but you should expect to be presented with the new skills and information in an entertaining way
08:14 PM roycroft: entertainment and quality content are not mutually exclusive
08:14 PM robotustra: Sephan Gottiswinter
08:15 PM robotustra: robrenz
08:15 PM robotustra: this type of video I prefer
08:16 PM robotustra: *Stefan
08:16 PM robotustra: *Stefan Gotteswinter
08:16 PM XXCoder: im subbed to that channel but dang is his videos rare
08:17 PM robotustra: but it's quality stuff
08:17 PM XXCoder: certainly. I still remember his precision stones
08:17 PM XXCoder: crazy
08:18 PM XXCoder: I prepped the knives stones that way and it was nicely flat lol
08:19 PM XXCoder: 3 stone method
08:19 PM robotustra: you mean to make surface plate?
08:20 PM XXCoder: nah saw his grinding stones videos, then looked up how to do it without grinder
08:20 PM XXCoder: then learned of 3 stone method
08:20 PM XXCoder: he talked about it also if I recall
08:21 PM roycroft: flattening grinding stones with the 3 stone method is the same thing as flattening surface plates with the three plate method
08:21 PM XXCoder: indeed
08:21 PM robotustra: I saw somewere how to make a diamond grinded stone on a mill
08:22 PM robotustra: have to do it myself
08:24 PM robotustra: Solid Rock Machine Shop also good channel
08:47 PM robotustra: interesting technique https://www.youtube.com/watch?v=gpbMn94vtrk&t=726s
08:48 PM XXCoder: interesting. never saw such setup
08:48 PM XXCoder: it would need heavy derbis control to protect mill
09:02 PM robotustra: newspaper + oil
09:02 PM robotustra: and low RPMs
09:03 PM XXCoder: indeed.
09:23 PM robotustra: I have a general question: Which collets system is more accurate in general, C5 or ER?
09:24 PM XXCoder: from what I understand it tend to vary by maker
09:24 PM XXCoder: chinese collets isnt going to be as good as precision ground japan ones
09:24 PM Tom_L: heat shrink
09:25 PM XXCoder: tom I only rarely used that but yeah amazing
09:26 PM XXCoder: there was one job that needed quite thin 1/16 endmill and its for groove around right next to a boss (but not literally against it)
09:26 PM XXCoder: heat strunk is only way to cut that
09:26 PM XXCoder: actually little larger than 1/16 but yeah still needed 4 inches down lol
09:27 PM Tom_L: https://www.iscar.com/products.aspx/lang/en/productid/4911
09:27 PM robotustra: heat shrink is not an option for home shop
09:27 PM XXCoder: pretty much yeah. unknown what brand I used, but company dont buy crap tooling so good ones
09:28 PM XXCoder: dunno how to use it at home shop, as equipment to heat it is very expensive
09:28 PM XXCoder: $10,000 coil
09:28 PM Tom_L: the collet series are probably similar however the quality varies quite a bit with the price tag
09:28 PM robotustra: it means the type of collets doesn't much matter, the manufacturer does
09:28 PM Tom_L: get a used one, my local welder buddy got one free or next to it
09:29 PM Tom_L: https://hackaday.com/2020/10/26/simple-induction-heater-helps-with-homebrew-shrink-fitting/
09:29 PM robotustra: I know there are also hydraulic ones
09:31 PM XXCoder: thats cool tom
09:31 PM XXCoder: most times heatstrunk isnt really needed but yeah amazing when its needed
09:31 PM XXCoder: usually clearance
09:33 PM robotustra: does japan produce collets?
09:33 PM Tom_L: better balanced holders too
09:34 PM robotustra: where so they sell them? I didn't saw them on ebay
09:34 PM XXCoder: dont think they usually sells on ebay
09:35 PM robotustra: ah, that's why
09:35 PM * robotustra by Sheldon voice
09:35 PM XXCoder: yeah ebay, chances is its chinese even if its stated to be usa or whatever
09:36 PM XXCoder: I trust ebay as far as I can run
09:36 PM XXCoder: (which is not at all)
09:36 PM robotustra: any internet shop for japanese machine tools?
09:36 PM XXCoder: found one https://www.yukiwa.co.jp/e/sc/sc_feature.php
09:37 PM robotustra: what I'm talking about? My lathe spindle has 0.03mm runout :)
09:37 PM robotustra: XXCoder, thank you
09:37 PM XXCoder: welcome
09:38 PM XXCoder: note its first result so dunno how good it is
09:38 PM XXCoder: when I worked I only used stuff not ordered stuff
09:41 PM robotustra: I see, but anyway you just pointed me a direction where to look for good tools
09:41 PM XXCoder: welcome :)
09:42 PM robotustra: probably I'll shop there if I'll rebuild my lathe spindle
09:42 PM robotustra: to air bearings
09:43 PM XXCoder: thats cool. I think air bearings is amazing
09:43 PM robotustra: the only thing is bother me is air compressor
09:44 PM robotustra: I'm thinking about this system
09:44 PM robotustra: https://www.youtube.com/watch?v=lOTWx69mghM
09:44 PM robotustra: it's doable in a home conditions
09:45 PM XXCoder: so it locks down when out of air?
09:45 PM robotustra: yes
09:46 PM robotustra: without damage
09:48 PM XXCoder: cool
09:50 PM robotustra: now I'm using tapered bearings, but they are not precise, it could be better
09:51 PM XXCoder: is that same as thrust bearings?
09:51 PM robotustra: no, it's conical shape bearings
09:52 PM XXCoder: hmm got pictures?
09:53 PM robotustra: https://www.skf.com/binaries/pub12/Images/1005%200008%20-%2010000_tcm_12-150966.png
09:54 PM XXCoder: interesting
09:54 PM XXCoder: similiar to https://www.industry-plaza.com/img/ball-and-roller-thrust-bearings-000187546-product_zoom.jpg
09:54 PM robotustra: https://upload.wikimedia.org/wikipedia/commons/thumb/6/69/Tapered-roller-bearing_din720_ex.png/330px-Tapered-roller-bearing_din720_ex.png
09:54 PM XXCoder: there is flat thrust bearings though
09:55 PM robotustra: I have rather short distance for my spindle, only 6"
09:56 PM roycroft: when i had my mini-lathe i upgraded the spindle bearings to tapered bearings
09:56 PM robotustra: and big not precise tapered roller bearings
09:56 PM roycroft: it had acceptable runout after that
09:56 PM robotustra: roycroft, what is a housing material for the headstock?
09:57 PM roycroft: on the mini-lathe?
09:57 PM robotustra: yes
09:57 PM roycroft: it was thin cast iron
09:57 PM robotustra: nice, I did it from aluminium, cast iron is too expensive I think
09:58 PM XXCoder: I remember that interesting project where person used dead car engine for cast iron
09:58 PM XXCoder: sady I cant find it anymore
09:58 PM roycroft: it's expensive if you're doing your own castings
09:58 PM robotustra: used cast iron engine block to make headstock?
09:59 PM roycroft: well, it is not necessarily financially expensive
09:59 PM robotustra: the only thing I can do is to bolt cast iron plates
09:59 PM roycroft: but it takes a lot of time to make a pattern and cast it
09:59 PM XXCoder: yeah something like that. its been so long that I cant remember exactly what machine it was
09:59 PM XXCoder: mill or lathe?
09:59 PM XXCoder: roy not remelting. just use directly
09:59 PM roycroft: oh
10:00 PM roycroft: that would be weird
10:00 PM XXCoder: it was
10:00 PM robotustra: nice idea
10:00 PM roycroft: and btw, that reminds me of another youtuber you might want to check out
10:00 PM roycroft: cast iron gypsy
10:00 PM roycroft: but her older videos are best
10:00 PM roycroft: she used to travel around to iron casting parties and film them
10:00 PM XXCoder: damn
10:00 PM XXCoder: https://hackaday.com/2019/03/08/a-no-cost-heavy-metal-lathe-from-junkyard-parts/
10:00 PM XXCoder: finally used right words to find it
10:00 PM roycroft: but that stuff pretty much stopped when covid arrived
10:01 PM robotustra: no, that's overkill already
10:03 PM roycroft: https://www.youtube.com/watch?v=AcJ5dM93q7E
10:03 PM roycroft: there you go
10:03 PM roycroft: this is art casting, not manufacturing casting
10:04 PM robotustra: I just need to rebuild housing in cast iron insted of aluminium https://i.imgur.com/hdRvLIF.jpg
10:04 PM roycroft: which makes it even more fun to watch
10:04 PM XXCoder: too much handcam sections which makes it unwatchable for me
10:06 PM robotustra: no, I don't know how to reach 1700 C at home
10:06 PM robotustra: for a 20 kg load
10:07 PM roycroft: the art cast iron crowd like to collect brake drums for melting down
10:07 PM robotustra: anyway I can live with 0.03mm runout for a while :)
10:07 PM XXCoder: hope they clean off the abestos safely
10:08 PM roycroft: it's part of the slag, i'm sure
10:08 PM roycroft: what little there is - they use the drums, not the pads
10:08 PM XXCoder: yeah what i mean is that they could get dust in lungs if they blow dust off wrong way
10:08 PM robotustra: pads are made of usual steel
10:09 PM XXCoder: and abestos is forever
10:09 PM roycroft: they bust up the drums with a sledge hammer and then dump them in the crucible and put them in the oven
10:09 PM robotustra: I don't think there is asbestos in the pads
10:09 PM roycroft: there used to be, but there hasn't been in many decades
10:10 PM XXCoder: mostly stopped in 1990s apparentlyy
10:10 PM XXCoder: not made illegal though, just stopped
10:10 PM roycroft: i was just handling an old brake drum today that's at least that old
10:10 PM robotustra: I don't know russians still use asbestos everywhere
10:11 PM robotustra: ovens, heaters
10:11 PM robotustra: etc
10:11 PM roycroft: asbestos is perfectly safe if handled properly
10:11 PM roycroft: the problem is that it's usually not handled properly
10:12 PM robotustra: true, just don't inhale the stuff
10:13 PM roycroft: using sharp sand for media blasting, which some folks still do, is much more hazardous than reasonable handling of asbestos
10:15 PM robotustra: may be it's not too expensive, https://www.mcmaster.com/products/iron/fabrication~cast/shape~sheet-and-bar/width~6-1-4/
10:16 PM robotustra: hm
10:17 PM robotustra: may be I can afford bolted cast iron headstock
10:22 PM robotustra: damn, it's chipper to buy yet another chinise lathe
10:23 PM XXCoder: roy agreed, as long as its sealed and highly clearly marked abestos
10:23 PM XXCoder: brake linings was pretty bad as it made metal dust with abestos
10:27 PM robotustra: find yet another guy with concrete https://www.youtube.com/watch?v=_CEu0wdb_3g
10:30 PM XXCoder: "dont forget to extract ball bearings you used to mix epoxy" lol
10:30 PM robotustra: :)
10:32 PM robotustra: there is base only made of concrete, but other parts looks like made of cast iron