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[00:00:06] <rue_house> am now
[00:02:19] <zhanx> foundry advice
[00:02:28] <zhanx> i want to cast aluminu
[00:02:33] <rue_house> perlite
[00:02:36] <zhanx> aluminum
[00:02:38] <rue_house> tiger torch
[00:02:38] <zhanx> ?
[00:02:49] <rue_house> small 5 gal hot water tank
[00:03:05] <rue_house> angle grinder and a good supply of cutting wheels
[00:03:10] <zhanx> k
[00:03:24] <zhanx> tiger torch noted
[00:03:46] <rue_house> insulation is a mix of perlite, concrete and sand
[00:03:52] <rue_house> thick
[00:03:59] <rue_house> like shape it on, not cast
[00:04:01] <zhanx> 4-5 cm?
[00:04:05] <rue_house> yup
[00:04:08] <zhanx> k
[00:04:13] <rue_house> pot = STEEL
[00:04:17] <rue_house> not stainless
[00:04:28] <zhanx> why not ?
[00:04:34] <rue_house> garden pottery will fall apart
[00:04:48] <rue_house> someting in alum reacts with stainless and pits it
[00:04:54] <zhanx> ok
[00:05:14] <rue_house> put the smaelter in a tray thats big enough to contain a leaked pot of alum
[00:05:16] <zhanx> so cast iron pot?
[00:05:23] <rue_house> buffin tins, the small muffin ones
[00:05:30] <rue_house> muffin
[00:05:45] <rue_house> tinfoil,
[00:05:56] <rue_house> sodium free salt
[00:05:58] <zhanx> i got a 48 miffin tin thing ( i will be casting small 8 ounces )
[00:06:01] <rue_house> borax
[00:06:08] <zhanx> degassing?
[00:07:03] <zhanx> cramming casting forums etc., but i know you have done it
[00:07:59] <rue_house> yea
[00:08:13] <rue_house> casting sand:
[00:08:25] <rue_house> large rock tumbler, bentonite based kitty litter
[00:08:33] <rue_house> fine sand
[00:08:39] <rue_house> bit of water
[00:09:02] <rue_house> use rock tobmler as a ball mill to powderize the kitty litter
[00:09:20] <rue_house> sand blaster is double good, it cleans off the castings AND generates fine sand
[00:09:25] <rue_house> for making casing sand
[00:09:58] <zhanx> k
[00:10:35] <rue_house> you need a mesh scoup for pulling the junk off the molten alum too
[00:10:49] <rue_house> did I take pics of my pouring setup?
[00:11:05] <zhanx> ok i will start looking for parts for it, tomorrow. not that i saw rue i looked
[00:12:27] <rue_house> p1030995.jpg
[00:13:03] <rue_house> p1080319.jpg
[00:13:11] <zhanx> links are bad
[00:13:14] <rue_house> http://ruemohr.org/~ircjunk/projects/smelter/p1030995.jpg
[00:13:25] <rue_house> so, see the Y at the top?
[00:13:36] <rue_house> its for pulling the pot out of the smelter
[00:13:39] <zhanx> too pick things up
[00:13:46] <rue_house> its got slots that the two side tongs lock into
[00:13:52] <rue_house> on the pot
[00:13:59] <zhanx> k
[00:14:20] <rue_house> the rebar jig, has a T handle on the right side you cant see
[00:14:31] <zhanx> rue after i start building i am gonna have a ton of questions etc
[00:14:46] <rue_house> http://ruemohr.org/~ircjunk/projects/smelter/p1080319.jpg
[00:14:53] <rue_house> (tiger torch)
[00:15:19] <rue_house> http://ruemohr.org/~ircjunk/projects/smelter/p1040232.jpg
[00:15:21] <zhanx> can see that.
[00:15:31] <zhanx> overflow?
[00:15:43] <rue_house> the junk scoop is the bar, thats under the 'square' lid on the left
[00:15:51] <zhanx> red gas ca
[00:15:52] <zhanx> can
[00:16:01] <rue_house> diesel
[00:16:05] <zhanx> k
[00:16:08] <rue_house> the blower crapped out on me
[00:16:16] <rue_house> I wanted to switch to propane anyhow
[00:16:22] <zhanx> gotcha
[00:16:24] <rue_house> but propane is a PIA in winter
[00:16:40] <zhanx> oh great why cause that was my plan for this winter
[00:16:58] <rue_house> bottle freezing up on me
[00:17:13] <zhanx> oh ok thats easy
[00:17:20] <zhanx> i got a bottle blanket
[00:21:08] <rue_house> for the scoop, I screwed a peice of punched plate to a peice of conduit
[00:21:34] <zhanx> k
[00:22:01] <rue_house> I successfully, simulated an RC circuit on an avr to implement a charge pump to measure rpm
[00:22:30] <zhanx> working on 3d omnidirectional sound detection right now
[00:22:49] <rue_house> yup
[00:23:19] <zhanx> its not too easy
[00:23:32] <zhanx> timing math is gonna be fun
[00:23:42] <rue_house> yup
[00:24:17] <rue_house> I'd like to see how you match and find the offset of the waves
[00:25:17] <zhanx> when i do it, your welcome to the code
[00:25:28] <rue_house> did you know that mathmatically, capacitors are always charging to a voltage? even when their discharging?
[00:26:13] <zhanx> yes
[00:26:35] <zhanx> and that screwed up my detection code on one mic today
[00:26:50] <zhanx> peak was lower, took 8 hours to find out why
[00:27:25] <zhanx> that and my voltage divider was off
[00:27:50] <zhanx> but you don't know till you test it
[00:28:33] <rue_house> I need a safe add and subtract for numbers
[00:28:37] <rue_house> that dosn't roll over
[00:29:15] <rue_house> error = AdcValue - tachCounter ;
[00:29:15] <rue_house> error /= 8;
[00:29:15] <rue_house> pwmvalue += error;
[00:29:32] <zhanx> i got all day tomorrow to fix the mic issue no kids to, so i can base line
[00:36:21] <zhanx> rue 3d printer
[00:36:36] <zhanx> yea i know i might buy it
[00:36:36] <rue_house> 1mm m8 threaded rod
[00:36:45] <rue_house> 4 nuts, (make sure 1mm pitch)
[00:36:53] <zhanx> https://www.aliexpress.com/item/9-2016-New-3d-Color-Printer-Dual-Kit-For-Sale-3dprinter-Electronics-With-One-Roll-Filament/32680671047.html
[00:36:54] <rue_house> about 16' of 5/16 rod and a box of nuts
[00:36:57] <rue_house> arduino,
[00:37:05] <rue_house> glass plate
[00:37:10] <rue_house> painters tape
[00:37:14] <zhanx> almost as cheap as you can source it
[00:37:25] <rue_house> stepper motors, nema17
[00:37:47] <rue_house> mega2560 avr board, with a
[00:38:03] <rue_house> ramps 1.4 shield and 4 motor drivers
[00:38:08] <rue_house> computer powers upply 300w
[00:38:18] <rue_house> ...
[00:38:25] <rue_house> buffer failure...
[00:39:19] <zhanx> rue_house: cheap easy printer?
[00:39:32] <rue_house> i2
[00:39:58] <zhanx> k
[00:40:26] <rue_house> 8mm rod from wide format impact printers
[00:40:43] <rue_house> LMUU8 bearings
[00:41:17] <rue_house> http://www.ebay.ca/itm/Prusa-i2-Printed-Parts-Kit-ABS-/150820586185
[00:41:24] <rue_house> that I thinks the guy
[00:42:41] <rue_house> looks like the right kit
[00:42:51] <zhanx> k
[00:42:52] <rue_house> you can make them from wood if your crafty
[00:43:00] <zhanx> i am crafty
[00:43:12] <rue_house> he improved the standard peices in that kit tho
[00:43:22] <rue_house> its my origional machine, fine kit
[00:43:47] <zhanx> ok
[00:43:50] <rue_house> dont get imperial kit, just eh standard one
[00:43:54] <zhanx> total price?
[00:45:27] <rue_house> ~$100 now
[00:45:48] <rue_house> go with 1.75mm, it just works better, not sure why
[00:45:55] <rue_house> get palstic from amazon
[00:46:05] <rue_house> 1.75mm PLA
[00:46:18] <rue_house> 1kg
[00:46:21] <zhanx> k
[00:46:51] <rue_house> I wonder why the price of his kit went UP so much
[00:47:14] <zhanx> china is cheap and includes everything
[00:47:20] <zhanx> but not calibrated
[00:48:25] <rue_house> prolly not assembled
[00:49:21] <zhanx> nope
[00:51:18] <rue_house> I'm gonna sleep now
[00:51:42] <rue_house> I think right now, in my clothes, on this chari...
[00:56:34] <rue_house> the good motors I have came from HP printers
[00:56:40] <rue_house> not sure which ones
[00:56:53] <rue_house> scanner table motors, so multifunction
[00:57:03] <zhanx> old dot matrix?
[01:04:09] <rue_house> yea
[01:04:12] <rue_house> wide papaer one
[01:05:41] <rue_bed> actually, the plastic bushings in that kit take work, but are better than cheap lmuu8
[01:38:33] <Jymmm> 132 columns?
[01:38:41] <Jymmm> green line
[21:27:42] <zhanx> rue, i was googling and read on the forging. I was like perlite you mean the stuff i use in my garden
[21:31:35] <rue_shop3> yes, the cheapo bags or white bits
[21:32:08] <zhanx> yea, ok was making sure, I have some then
[21:33:10] <rue_shop3> By volume, it is 3:3:4 Portland cement:perlite:silica sand, mixed together thoroughly, then combined with 4 parts fireclay
[21:33:13] <rue_shop3> http://makezine.com/2012/04/05/how-tohomemade-castable-refractories/
[21:33:18] <rue_shop3> I didn't use fire clay
[21:33:25] <zhanx> read that also
[21:33:35] <zhanx> waht did you use?
[21:33:37] <zhanx> waht
[21:33:43] <zhanx> ugh no type today
[21:34:08] <rue_shop3> just the perlite, portland and sand
[21:34:49] <rue_shop3> the silica sand was actually, crushed glass sand
[21:34:51] <zhanx> k
[21:35:00] <zhanx> fish tank sand then
[21:35:18] <rue_shop3> maybe, prolly 80 grit was what I used
[21:35:22] <zhanx> k
[21:35:28] <rue_shop3> sceptical about its contribution
[21:35:48] <zhanx> think this old cast iron 14" diameter dutch oven can be used for it?
[21:36:15] <rue_shop3> I used a 5 gal hot water tank, available from any scrap metal place...
[21:36:32] <zhanx> k so taller?
[21:36:50] <rue_shop3> try to keep it tight to the pot ~2"
[21:37:10] <rue_shop3> hahaha
[21:37:29] <zhanx> k so it reflects heat to the pot better.
[21:37:37] <rue_shop3> there is a good fire in the boiler, it just, without any extra effort, heated the house, the charge level of the 100gal tank hardly even budged
[21:38:03] <zhanx> well thats good
[21:38:17] <Jymmm> rue_bed: extra effort.... you mean the blower?
[21:38:38] <zhanx> Jymmm: have you seen rue's boiler?
[21:38:50] <rue_shop3> no, the temp rise of the 100gal tank didn't even slow down when the house loop kicked in and pushed the temp of the house up to 20c
[21:39:05] <Jymmm> zhanx: not sure
[21:39:12] <rue_shop3> the whole firebox is just about glowing bright ornage right now
[21:39:23] <zhanx> its not recommended but it works
[21:39:25] <zhanx> he made it
[21:39:33] <Jymmm> rue_bed: but the blower is going, yes?
[21:39:39] <rue_shop3> yea, its forced air
[21:39:53] <rue_shop3> its gonna hit maxout soon
[21:39:58] <Jymmm> rue_bed: outside temp?
[21:40:02] <rue_shop3> -1.5c
[21:40:17] <Jymmm> Nice!
[21:40:18] <zhanx> -20.3 c here
[21:40:26] <zhanx> and dropping
[21:40:39] <zhanx> its the wind tho
[21:40:42] <Jymmm> rue_bed: And you have that tank outside, naked too iirc
[21:40:47] <rue_shop3> no
[21:41:10] <rue_shop3> 100gal tank has about 2" of fiberglass insulation and then 1.5" of ridgid foam
[21:41:13] <rue_shop3> all banded up
[21:41:25] <Jymmm> outside?
[21:41:29] <rue_shop3> yea
[21:41:29] <Jymmm> under house?
[21:41:36] <rue_shop3> just outside
[21:41:38] <Jymmm> k
[21:41:39] <rue_shop3> under a tarp :/
[21:41:44] <Jymmm> eh
[21:41:54] <rue_shop3> cause I dont want the insulation to get wet
[21:41:56] <Jymmm> rue_bed: Hey, on the mass heater thing...
[21:42:05] <Jymmm> rue_bed: drive lines
[21:42:27] <Jymmm> they're 3-6" diamtere, hollow, and steel =)
[21:42:48] <rue_shop3> k
[21:43:02] <Jymmm> rue_bed: A resource for large diamter steel tubing
[21:43:14] <rue_shop3> rememeber that either way, the interacting surfaces accumulate soot
[21:43:32] <rue_shop3> so I went with fire tubes, cause its easier to clean
[21:43:46] <Jymmm> what is "fire tube" ?
[21:43:51] <zhanx> not soot but... ugh.. pitch!
[21:44:01] <rue_shop3> fire goes thry the pipe, water on the outside of it
[21:44:04] <Jymmm> rue_bed: and I meant about the 55gal drum mass heater thing
[21:44:12] <rue_shop3> zhanx, mines carbon soot
[21:44:20] <zhanx> you burning wood?
[21:44:25] <rue_shop3> I get about 5 gal of it a year, pure, carbon soot
[21:44:27] <rue_shop3> yea
[21:44:38] <zhanx> you have some pitch then
[21:44:54] <zhanx> unless you are burning kiln dried wood
[21:45:05] <rue_shop3> ?
[21:45:09] <rue_shop3> dont follow
[21:45:22] <rue_shop3> but I'm gonna go load in more before it shuts the draft fan down
[21:45:26] <zhanx> pitch is the glue that holds wood fibers together
[21:45:36] <Jymmm> as hot as he's burning, I doubt he has any of that, with full combustion
[21:46:23] <zhanx> jymm no its there still just less of it
[21:49:09] <rue_shop3> lots of its secondary combustion
[21:49:24] <rue_shop3> the secondary flames tickle the boiler tubes
[21:50:53] <rue_shop3> clear exhaust tho, thats what I like
[21:51:13] <zhanx> rue, like i said before your design is good
[21:51:14] <rue_shop3> (when it gets going, otherwise its smoking up about 3 blocks around me)
[21:51:32] <zhanx> but lacks safety features (unless you finally added them)
[21:58:03] <rue_shop3> no I put the autoextinguish dump back in
[21:58:45] <zhanx> k
[21:59:01] <zhanx> fire sensors also?
[21:59:10] <rue_shop3> pff no
[21:59:20] <rue_shop3> all I'm worried about is steam
[22:00:02] <zhanx> and that is why rue doesn't heat my house
[22:01:02] <rue_shop3> its outside, if it explodes, its no biggie
[22:01:33] <Jymmm> and fire sensors aen't going to tell you a thing on that =)
[22:02:06] <rue_shop3> i DO need a sensor on the firebox to jam on all the pumps/autostart blowers when I get a fire going
[22:02:26] <zhanx> Jymmm: oh look my fire is out, wonder why. Hole in wall bah that was there
[22:02:27] <rue_shop3> forgetting to turn on the boiler circ pump (its manual) is BAD
[22:02:58] <Jymmm> rue_shop3: What, not enough relays?
[22:03:12] <rue_shop3> no sensor
[22:03:21] <zhanx> knowing rue he had them and used them on something else
[22:03:22] <Jymmm> rue_shop3: for a pump?
[22:03:32] <rue_shop3> I need a sensor that trips at like 45c, but can withstand 1400c
[22:03:49] <rue_shop3> I'm considering making a crude thermocouple
[22:05:09] <Jymmm> rue_shop3: Whay would you need a pump sensor for 2800F ?!
[22:05:40] <rue_shop3> oof, that was close, the boiler output peaked 78c, thats close to the converter starting to boil
[22:05:58] <rue_shop3> it does an emergency thermal dump to the house if it gets too close
[22:06:15] <Jymmm> rue_shop3: but 1400C ?!
[22:06:21] <rue_shop3> yea
[22:06:29] <rue_shop3> I think that bright orange steel
[22:06:45] <Jymmm> but the sensor of for the water, not the steel
[22:07:41] <rue_shop3> http://www.stormthecastle.com/blacksmithing/images/blacksmithing-color-chart.jpg
[22:07:44] <rue_shop3> 1600F
[22:08:01] <Jymmm> or are you saying to install the sensor on the boiler, it's right above the firebox and needs to withstand 1400c?
[22:08:26] <rue_shop3> no, I need a sensor on the firebox that knows when there's a fire
[22:09:35] <rue_shop3> might be in the 1700F range
[22:11:07] <Jymmm> 1100c
https://lunainc.com/growth-area/technology-development/materials/extreme-range-temperature-sensor/
[22:12:23] <rue_shop3> meh, a copper/steel junction can prolly be made to work
[22:12:35] <rue_shop3> its a bit trickey, cause there is a polarity reverse at some point
[22:12:37] <Jymmm> http://www.clay-king.com/pyrometer.htm
[22:13:05] <rue_shop3> meh
[22:13:20] <rue_shop3> I dont need to know what the temp is, I just need to know if its over about 45c
[22:17:21] <Jymmm> rue_shop3: Found it... MAX TEMP 2300c
http://www.omega.com/pptst/XTA-W5R26.html
[22:18:25] <rue_shop3> copper wire, nail, few calibtation cycles, done.
[22:18:28] <rue_shop3> $2
[22:21:56] <Jymmm> rue_shop3: Just take pics when you make this thing
[22:22:38] <rue_shop3> nail, copper wire, fused at one end, op-amp in a transconductance amplifier arrangement,
[22:22:50] <rue_shop3> comparitor, and pot
[22:25:13] <Jymmm> http://www.keithcompany.com/keith-parts-thermocouples.html
[22:28:22] <Jymmm> rue_shop3: Platinum-Rhodium Thermocouple Wire -
http://www.omega.com/pptst/SPPL.html
[22:29:04] <rue_shop3> as long as your paying, use express shipping
[22:29:17] <Jymmm> rue_shop3: it's $2
[22:29:38] <Jymmm> US and Canada1-888-826-6342
[22:36:37] <rue_shop3> $65 shipping
[22:36:44] <Jymmm> OUCH
[22:37:04] <Jymmm> I'd ask them to just toss it in an envelope
[22:46:01] <rue_shop3> and dont forget the $50 'we saw it' border fee
[22:46:21] <zhanx> 65 bucks is like 10x the hourly rate of th guy tossing it in the mail
[23:00:04] <rue_shop3> whats the min wage in the usa?
[23:00:16] <rue_shop3> or did trump do away with that
[23:00:38] <rue_shop3> I think that if he gets taken out by somone, the world will be like "meh.."
[23:01:00] <rue_shop3> but I'm looking to the future with quite a curiosity
[23:01:16] <zhanx> 5.25?
[23:01:25] <zhanx> not sure
[23:13:24] <rue_shop3> how much do you think prices of things will go up if trump decides to close the us borders to import
[23:13:51] <zhanx> none
[23:14:03] <zhanx> not for you anyways
[23:14:44] <rue_shop3> there are lots of concerns about what he's gonna do
[23:14:53] <zhanx> wont be closing borders anyways that he said. tariffs so us companies can compete
[23:15:03] <zhanx> alots of it is hype
[23:15:05] <rue_shop3> apparently peace with taiwan means war with china
[23:15:21] <rue_shop3> I wonder if he'll just hype for 2 years
[23:15:54] <zhanx> taiwan is its own country tis like canada saying talks with japan is bad
[23:17:55] <zhanx> rue the us media is guilty of taking a 50 year democrat and making him seem evil because he ran against clinton
[23:18:17] <zhanx> trump is a limo liberal
[23:18:48] <rue_shop3> he's not sworn in yet is he?
[23:19:34] <zhanx> no not till the 20th
[23:20:07] <rue_shop3> I wonder if hdpe isn't a good choice for a motor bracket
[23:20:12] <zhanx> democrats in the last 4 years 1000 seats in states and us congress due to their policies and the news helping them
[23:20:25] <zhanx> well it vibration damps
[23:21:48] <rue_shop3> I'm wondering about the temp capabilites
[23:22:00] <rue_shop3> dont know what temp this motor will get to
[23:22:18] <rue_shop3> I have some plexiglass, but, having a motor bracket shatter would be bad
[23:31:57] <rue_shop3> its amazing how the power output of the boiler is directly proportionate to the amount of burning material, and not how hot anything is or how hot its burning
[23:32:52] <rue_shop3> damn its 9:00
[23:34:14] <zhanx> rue should use the steam to power things
[23:34:21] <rue_shop3> I need a way to bolt down the rails for the cnc machine that dosn't lock them on the xy plane so i can adjust them
[23:34:34] <rue_shop3> yea, like a 4Kw alternator
[23:34:39] <zhanx> spring float them?
[23:34:50] <rue_shop3> no they have to be able to be locked
[23:35:05] <rue_shop3> but I need to adjust them as much as +-1/4"
[23:35:22] <zhanx> rue spring float the rails with locking adjustor
[23:35:33] <rue_shop3> ...
[23:35:47] <rue_shop3> oh, I DID start supper
[23:58:25] <rue_shop3> hmm, bedtime is 9:45 unless I'm not finished supper
[23:58:31] * rue_shop3 eats slowly
