#linuxcnc Logs

Mar 08 2020

#linuxcnc Calendar

03:35 AM Deejay: moin
06:00 AM jthornton: damn lost an hour
06:02 AM XXCoder: sorry I dropped time and it chipped a corner
06:02 AM XXCoder: ground it off but theres a hour loss
06:46 AM Tom_L: sure enough did
06:52 AM jthornton: looks like a nice day here
07:04 AM Tom_L: same here
07:05 AM Tom_L: so did the goldwing break down in Memphis? ... seems to be your unlucky place
07:06 AM jthornton: no, I drove down there Friday and bought a corvette so I left it in his garage so I could come back yesterday and retrieve it
07:06 AM Tom_L: nice
07:06 AM Tom_L: what year?
07:07 AM jthornton: 2004 LeMans Commemorative edition
07:10 AM jthornton: https://cimg2.ibsrv.net/gimg/ls1tech.com-vbulletin/1297x975/corvette_8a72926f8e40c1243bcef3231e2cf6a20b46af3c.jpg
07:10 AM jthornton: like that one
07:11 AM gregcnc: skunkworks, that's essentially how the square drill works, no? cutter rake and clearance will be important https://www.etudes.ru/en/etudes/drilling-square-hole/
07:11 AM Tom_L: nice body style
07:12 AM Tom_L: a few inbetween years prior i didn't care for
07:12 AM Tom_L: the old old ones were cool
07:13 AM gregcnc: no way 1980's
07:13 AM jthornton: yea the stingray looked the best but rode like crap lol
07:14 AM Tom_L: but you didn't care when you were young
07:14 AM Tom_L: now it's all about the ride...
07:14 AM gregcnc: luxury performance brands made it so
07:15 AM jthornton: the only thing I missed on the way home is a GPS
07:15 AM jthornton: mine has the BW 6 speed manual transmission so it gets 30MPG on the highway
07:15 AM Tom_L: we use the phone when we need one
07:17 AM jthornton: I like a bigger screen and there is no place to lay a phone except in the center console
07:17 AM jthornton: https://gnipsel.com/images/vehicles/2004-corvette/corvette-01.jpg
07:17 AM jthornton: I had one photo on my phone
07:18 AM jthornton: the top comes off and stores in the back
07:18 AM Tom_L: https://www.weathertech.com/weathertech-cupfone/cupfone/
07:18 AM Tom_L: she wanted one of those
07:19 AM jthornton: did you try one?
07:19 AM Tom_L: no not yet
07:19 AM Tom_L: they make good stuff though
07:20 AM Tom_L: i got their mats for the boys' cars since they both work in a cnc shop and get crap all over
07:20 AM jthornton: I need rubber mats for the corvette
07:20 AM Tom_L: on her civic i think it would be too far out of the line of sight
07:21 AM Tom_L: they have a lip around the side to catch water etc
07:21 AM gregcnc: i was going to say, you don't want to be looking into your cupholder if you are driving
07:21 AM Tom_L: i got em mostly for the metal chips they get stuck on their feet
07:22 AM Tom_L: gregcnc, right, it just depends where things are positioned
07:22 AM jthornton: https://www.z06vette.com/threads/spring-loaded-cup-holder-cover-fix.127434/#lg=thread-127434&slide=0
07:22 AM jthornton: that's the cup holder in the corvette c5
07:22 AM jthornton: just a shallow thing
07:22 AM Tom_L: might not work too good there, i dunno
07:24 AM Tom_L: looks like they've got extensions for it to 'custom' fit
07:24 AM jthornton: looks like they have mats for the c5
07:25 AM gregcnc: I think they have mats for anything with wheels
07:26 AM Tom_L: she _was_ using a phone holder that stuck in the air vent on the equinox
07:26 AM Tom_L: i never did like that one
07:26 AM gregcnc: https://www.weathertech.com/christmas-tree-mat/
07:28 AM jthornton: lol
07:28 AM Tom_L: we'll be goin thru Memphis this week
07:29 AM Loetmichel: Short question: M4 with a countersunk head: how much diameter on the head? A.k.a How deep a countersink to make?
07:29 AM jthornton: I'd have to go out to the shop and find one to measure...
07:29 AM gregcnc: isn't there some din spec for this?
07:29 AM jthornton: where are you headed to?
07:30 AM Loetmichel: i just have no on hand and constructing a device where i have M4 bolts thru the bottom plate and want them to be flush
07:30 AM gregcnc: 8.6mm
07:30 AM Loetmichel: s/no/none
07:30 AM Loetmichel: gregcnc: thankx
07:31 AM gregcnc: din 74
07:32 AM Tom_L: https://www.sciencedirect.com/topics/engineering/countersunk-hole
07:32 AM Tom_L: chart
07:33 AM Tom_L: looks like 8.96 for the 4mm
07:34 AM * Loetmichel made 2,5mm deep aka 9.02 outer diameter countersinks... should work
07:35 AM Loetmichel: thanks again
07:35 AM gregcnc: iso 7721 screws metal need are 9.4-9.6.
07:35 AM gregcnc: din 74 was for wood screws oops
07:35 AM Loetmichel: that will be a MONSTER... designing my "akkulafette" version 2... this time with two 12V 40Ah AGM batteries instead of 10 12V 7Ah ones ;)
07:36 AM Tom_L: jthornton, Savannah
07:36 AM gregcnc: SW has this figured out already, I don't check unless I'm making it very tight
07:37 AM jthornton: nice
07:37 AM Tom_L: inlaw works at Gulfstream
07:37 AM Tom_L: goin to visit them a bit
07:37 AM gregcnc: 80Ah of battery?
07:37 AM Loetmichel: that thing, just a bit bigger: http://www.cyrom.org/palbum/main.php?g2_view=core.DownloadItem&g2_itemId=5338
07:38 AM gregcnc: lunar rover?
07:38 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=5534&g2_imageViewsIndex=1
07:38 AM Loetmichel: no, remote controlled "battery mover"
07:38 AM Loetmichel: for flying the copters on airfields that have the parking lot not nearby
07:39 AM Loetmichel: also will double as a remote controlled snowplow in the winter, for the backyard
07:40 AM Loetmichel: <- was tired of carrying heavy batteries to the field back then to recharge the drones ;)
07:40 AM gregcnc: does it drive itself to the field or do you have to load it in your car?
07:40 AM Loetmichel: it drives itself
07:41 AM Loetmichel: of course from the car boot
07:41 AM Loetmichel: but the airfield i was back then was about 5 minute walk from the parking lot
07:41 AM Loetmichel: not fun if you have heavy battery and a bunch of clutter to carry
07:42 AM Loetmichel: trying to do a tracked version now though
07:42 AM Loetmichel: to have more grip for plowing
08:40 AM skunkworks: gregcnc: yes - exactly.
08:44 AM skunkworks: well - give or take
09:00 AM Loetmichel: hmm, whats a good transfer format to show 3d files to someone else?
09:01 AM Loetmichel: STL? or better 3d-PDF?
09:01 AM Loetmichel: what have most of the guys and gals installed?
09:04 AM p0g0: Loetmichel, I'll guess, and it is only a guess, that it depends on what the "someone else" is going to do with the stuff. Will they look at it, use the example, make something...
09:13 AM Loetmichel: look at it mostly
09:14 AM Loetmichel: i am thinking of a better way to show off constructions. its a bit bah to make fixed jpegs, if someone wants to look at the insides
09:17 AM Loetmichel: p0g0: you know, to have any onlookers to be able to rotate and zoom. Not like this: http://www.cyrom.org/palbum/main.php?g2_itemId=17748&g2_imageViewsIndex=1
09:45 AM miss0r|office: Due to unforeseen premature failure, I now own a new samsung washingmachine with an app :S WHat a time to be alive...
09:48 AM jymmmm: Good morning
10:21 AM Loetmichel: *hmpf* milling machine/router is to small for the bottom 4mm alu sheet of my new project... no problem, i know a way out... but MAN do i overdo it with screws AGAIN... :-) -> http://www.cyrom.org/palbum/main.php?g2_itemId=17754&g2_imageViewsIndex=1
10:22 AM Javabean: "no such thing as overkill, mearly "OPEN FIRE" and "I NEED TO RELOAD"
10:40 AM Tom_L: or eliminate the seam
10:41 AM Loetmichel: Tom_L: the seam is there because my router can only do 6000*400 sheets
10:41 AM Loetmichel: 600*400
10:41 AM Tom_L: relocate off 2 screw holes?
10:41 AM Tom_L: i did my x y plates on the sherline that way
10:42 AM Loetmichel: yes, did that but it isnt really precise
10:42 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Y_Axis_Plate1.jpg
10:42 AM Loetmichel: i's rather put the "puzzle" in, its easier to get right
10:42 AM Tom_L: i had no real choice
10:42 AM Loetmichel: i'd
10:43 AM Loetmichel: the zigzag works pretty well though
10:43 AM Loetmichel: did it a few times already: http://www.cyrom.org/palbum/main.php?g2_itemId=16414&g2_imageViewsIndex=1
10:44 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=16182&g2_imageViewsIndex=1
10:44 AM Loetmichel: even without any screws, just a bit of copper tape on the inside
10:44 AM Loetmichel: its surprisingly sturdy
10:44 AM Tom_L: i'm sure it would be
11:52 AM jdh: how much clearance gap do you leave for the fit?
11:58 AM Loetmichel: jdh: 0
11:59 AM Loetmichel: press fit
12:01 PM Rab: I believe I've seen a similar design which used a punch across the seam to deform the fingers and hold tight without fasteners.
12:03 PM Loetmichel: yeah, that works, too
12:04 PM Loetmichel: on the tracked battery box i need a strip on the inside to hold the batterys in place anyways, so there is no penality to use scrws on the seam
12:04 PM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=17748&g2_imageViewsIndex=1 <- those magenta blocks are the 12V 40Ah AGMs
12:04 PM Loetmichel: and they SHOULD lock int the "frame" on the bottom
12:05 PM Loetmichel: hmm. should i place some 4mm strips on the bottom of the 45° bevels, too?
12:06 PM Loetmichel: to prevent them from sliding back/forth?
12:06 PM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=17754&g2_imageViewsIndex=1