#garfield Logs

Oct 22 2017

12:00 AM rue_mohr: xyz?
12:02 AM Tom_L: i'd like at least 12 x 18 or so
12:02 AM rue_mohr: wow
12:02 AM Tom_L: and 10 in z maybe
12:02 AM Tom_L: whatever those rails are
12:02 AM rue_mohr: k, thats getting up to a full size mill
12:02 AM Tom_L: that would make a good area
12:02 AM rue_mohr: gets big, esp if its a mill design and not a router design
12:02 AM Tom_L: 400 x 700 x 1000
12:02 AM rue_mohr: er, dude 3' z?
12:02 AM Tom_L: 400mm
12:02 AM Tom_L: that's the rail length
12:02 AM Tom_L: minus the pillowblock length
12:02 AM rue_mohr: yea, so your working size is half
12:02 AM Tom_L: and any mounting stops etc
12:02 AM rue_mohr: yea
12:02 AM rue_mohr: k, I cant even fathom having that much room
12:02 AM Tom_L: with those you wouldn't need much for stops though
12:04 AM Tom_L: i'm sure you can get shorter kits
12:04 AM rue_mohr: what you going to use as a motor?
12:04 AM rue_mohr: 1hp AC?
12:04 AM Tom_L: i dunno
12:04 AM Tom_L: likely the sherline to start
12:04 AM rue_mohr: I want to use a larger dc motor, low rpm, and belt it up
12:04 AM rue_mohr: so, maybe a scooter motor
12:04 AM Tom_L: servo
12:05 AM Tom_L: all those silly spindle kits you see are for high speed routers though
12:05 AM rue_mohr: yea
12:05 AM rue_mohr: I was thinking that
12:05 AM Tom_L: 10k is all i would want max
12:05 AM Tom_L: 6 would be ok
12:05 AM Tom_L: the sherline will almost do 6
12:05 AM rue_mohr: this is part of where I'm torn
12:06 AM rue_mohr: the new one I did can get up to 12.5k iirc
12:06 AM Tom_L: mine is just a dream that will never get fulfilled
12:06 AM rue_mohr: I have an I beam ont eh shop floor now, with chalk lines on it
12:06 AM Tom_L: if i did one, i would want to cut steel which would require a lower rpm spindle with power
12:06 AM rue_mohr: and the channel in the driveway
12:07 AM rue_mohr: yea, if I can do aluminum I'm happy
12:07 AM Tom_L: same but i'm planning ahead
12:07 AM rue_mohr: of all the cnc I'v ever done, I'v not gone more than 3" in height, the vise has been the largest reason for Z room
12:07 AM Tom_L: and you do have room for it btw
12:07 AM Tom_L: you just don't know it
12:07 AM rue_mohr: no i dont
12:08 AM rue_mohr: I was purging today
12:08 AM Tom_L: you can prioritize what you keep
12:08 AM Tom_L: and what you want to use
12:08 AM rue_mohr: highgrading
12:08 AM rue_mohr: I'm printing another cnc pendant
12:08 AM Tom_L: vise and tool length makes you want more z
12:08 AM rue_mohr: already have a controller togethor
12:09 AM Tom_L: to use an 8" endmill you need 16" travel
12:09 AM rue_mohr: thats what I dont like about those highspeed spindles, too long and small
12:09 AM rue_mohr: goodpoint
12:09 AM Tom_L: i've been around them a good while
12:09 AM Tom_L: i know this
12:09 AM rue_mohr: ok, I have the livingroom full of routers that need to be put away
12:09 AM rue_mohr: biab
12:09 AM Tom_L: may be asleep
12:09 AM Tom_L: waiting for the wash to beep
12:29 AM Tom_itx: https://motionconstrained.com/store/hiwin-blocks/hiwin-hgh20-blocks/
12:29 AM Tom_itx: http://www.hiwin.com/pdf/linear_guideways.pdf
12:29 AM Tom_itx: for dimension data
12:34 AM rue_shop3: my $20 projects cant afford that stuff
12:34 AM Tom_L: it's free to look
12:35 AM Tom_L: i get ideas just looking sometimes
12:36 AM Tom_L: P 15 of the last one shows how you should mount for box rails
12:43 AM rue_shop3: huge pdf, giving up trying to find the end
12:43 AM rue_shop3: lots of awesome detail
12:43 AM Tom_L: yeah the last one is big
12:43 AM Tom_L: lots of info in it though
12:47 AM Tom_itx: http://www.lm76.com/HG-Series-Catalog_opt.pdf
12:47 AM Tom_L: subset of it with just the rail data
01:08 AM rue_shop3: ackgh dozing off
11:35 AM Tom_L: haha, found cad models for the rail system
04:49 PM Tom_L: i piped my air in the attic
04:49 PM Tom_L: with a drop
04:50 PM Tom_L: checked tube inventory
04:50 PM Tom_L: i've got some 1.5" and some 2" square
04:50 PM Tom_L: not enough of either but enough to size up what i can do with it
04:51 PM Tom_L: so i've got the rails in cad and now the tubes
04:51 PM Tom_L: you did a gantry design
04:52 PM Tom_L: i wonder how far apart to space the Y axis tubes for a bridgeport style
04:52 PM Tom_L: since it must support the whole X table
04:52 PM Tom_L: i was thinking about 8"
04:57 PM Tom_L: centers of the actual rails
10:17 PM rue_: wrong button rue
10:18 PM rue_ is now known as rue_mohr
10:18 PM rue_mohr: I'v the bit is always cutting over the middle of the Y rails tho
10:19 PM rue_mohr: I like the box ways
10:19 PM rue_mohr: I think I can set up to grind them in place
10:19 PM rue_mohr: if I want to go that far
10:19 PM rue_mohr: material to make them from is the harder part
10:19 PM rue_mohr: some 1/4" plate or something
10:19 PM rue_mohr: all the steel places here have rusty stock
10:20 PM Tom_L: you want them plenty beefy
10:20 PM rue_mohr: 1/4" is more than enough for what I'm doing
10:20 PM rue_mohr: I'm not targeting steel
10:21 PM rue_mohr: tho,
10:21 PM rue_mohr: a 1mm carbide bit should do steel ok
10:21 PM rue_mohr: and you cant push hard on that
10:26 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Mill_base.jpg
10:27 PM Tom_L: yeah .25" steel is pretty tough compared to aluminum
10:49 PM Tom_L: i would use 3/8" plate at least i think
11:58 PM rue_mohr: the perspective is off
11:58 PM rue_mohr: looks crookid
11:59 PM rue_mohr: that design is hard to put an upright on, thats along the lines of my ditched design