I have been using carbide sharp V engraving bits from Bits and Bits. I as I recall the tips have a .005" end. Call 1-800-972-7801 ...
99708
Dan Mauch
danmauch
May 23, 2013 5:47 pm
Not sure how you plan to run the engraving bit but you really need high speed. I am using 10,000 rpm but I wish I could go up to at least 40,000 for such a...
99709
Gary Click
nitewatchman5
May 23, 2013 6:05 pm
I use them extensively running on a Tormach 1100. I use primarily the .3mm 30deg. cutter I believe but I need to check that. Current we are using these cutters...
99710
Jack McKie
freshwatermo...
May 23, 2013 6:39 pm
Dan,  That is a consideration as I can only turn about 4000 rpm on my cnc  minimill. Is this unrealistic with a .2mm or .3mm cutter at slow feed...
99711
Jack McKie
freshwatermo...
May 23, 2013 6:50 pm
What feed rate ipm, are you using? ________________________________ From: Gary Click <garyclick@...> To: CAD_CAM_EDM_DRO@yahoogroups.com Sent:...
99712
Stephen Muscato
elko_dude
May 23, 2013 6:55 pm
Not bad for the price for engraving. I use them for brass & aluminum engraving. Not so good for circuit boards as the carbide is cheap quality, the fiberglass...
99713
Gary Click
nitewatchman5
May 23, 2013 7:17 pm
5140 RPMS 5 IPM .008"-.010"Depth of Cut ________________________________ From: Jack McKie <freshwatermodels@...> To: "CAD_CAM_EDM_DRO@yahoogroups.com"...
99714
Dan Mauch
danmauch
May 23, 2013 7:51 pm
It will work at 4000 but the edges may look a bit ragged but if you use crocus cloth after maching that should know off the burrs. Dan ] Dan Mauch ...
99715
Roland Jollivet
jemelectric
May 24, 2013 4:29 pm
Hi Jack Have a look at this video. It's slightly off-topic, but notice the RPM and milling feed rate. Note especially how deep the cutter goes according the ...
99716
skullworks
May 24, 2013 8:11 pm
... For critical work I use these http://www.micro100.com/inch/rtc_two_end.html but I also send out my broken 1/8" shank carbide to my tool grinder who makes...
99717
PeterS
peppermark1
May 30, 2013 1:53 am
Haven't made any progress so far. Have a CNC Sherline Mill w/ 8760 controller and planning to use Mach 3, since I already have the license that came with my...
99718
alexcncintern
May 31, 2013 3:41 am
Hi, I'm alex and am interning for the summer for a CNC company and we're considering developing a preventative maintenance program. I need your feedback. What...
99719
JackC
jcoats
Jun 4, 2013 1:43 pm
First, be careful and read the fine print. Make sure they cover what you need to have covered. I used warranty support on computers commercially. We used to...
99720
Steve Greenfield
alienrelics
Jun 17, 2013 3:25 pm
Try not to laugh... I'm working on designing and building a CNC mill/engraver. I'd like it to have a cut volume of approximately 1000x1500x100mm (about 3ft...
99721
Andy Wander
andywander
Jun 17, 2013 3:38 pm
Hi Steve: A couple of observations: -even the fiber-reinforced timing belts do not really stretch much. -More powerful steppers usually go slower, and for a...
99722
cnc sales (hanermo)
hvenermo
Jun 17, 2013 3:44 pm
Unfortunately, you are off track. Your dimensions are WAY too small for anything except engraving. I do understand your needs re:costs, but .. Cutting...
99723
Jamie Cunningham
backyardwork...
Jun 17, 2013 3:45 pm
My Acme screw is about 5 feet long and it whips if I go too fast - luckily for me at that speed my machine missed steps more often and so it's not the only...
99724
Roland Jollivet
jemelectric
Jun 17, 2013 3:57 pm
Drive the nut and not the rod. Keep the rod fixed in tension. The same can apply to a belt. Drive the cog and not the belt. So the belt will lay flat except...
99725
Art Eckstein
axtein
Jun 17, 2013 4:01 pm
Steve, To further reinforce what Andy has said, I have Derlin anti backlash nuts on my small router. I find that if I do much in the way of rapids at speeds...
99726
cnc sales (hanermo)
hvenermo
Jun 17, 2013 4:17 pm
Not really. Acme is a std defined threadform, and you can get inserts for threading it from all manufacturers. So it the metric equivalent. The problems are...
99727
Tony Smith
dropcat2001
Jun 17, 2013 5:18 pm
... ...approximately 1000x1500x100mm (about 3ft by 5ft by 4 inches) Yup. Way too small for anything useful. Tony...
99728
Tony Smith
dropcat2001
Jun 17, 2013 5:39 pm
... have ... take ... Belt drive works fine. Have a look at http://www.automatedwoodworks.com/Videos.htm, about 1:10 into the first video might interest you....
99729
alienrelics
Jun 17, 2013 7:10 pm
... Thanks! I think I'll revisit the idea of using timing belts. I don't need sub-micron accuracy, after all. The ShapeOko has a static belt with rollers...
99730
Jamie Cunningham
backyardwork...
Jun 17, 2013 7:14 pm
Hey Steve - I've cut 80/20 with my chop saw - was scary at first but it cuts just fine - at first I clamped it into place and cut while cringing LOL but by the...
99731
Roland Jollivet
jemelectric
Jun 17, 2013 7:31 pm
If you have the belt teeth down, then what you could do is get another belt, and glue it to the table, teeth up. The belts now mesh together giving you a quasi...
99732
Drew Rogge
drogge47
Jun 17, 2013 8:17 pm
One way to get around whip is to spin the nut instead of the screw. The nut and motor are mounted to the moving carriage which I think would be the gantry in...
99733
Steve Blackmore
stevepilotltd
Jun 17, 2013 9:21 pm
... They don't stretch. See http://www.gates.com/facts/documents/Gf000284.pdf or http://www.sdp-si.com/D265/PDF/D265T003.pdf Steve Blackmore --...
99734
Ron Thompson
ronthomp2002
Jun 17, 2013 10:41 pm
... Look into a Joe's 4x4 rack and pinion drive cnc router. Can be built to different sizes and cuts aluminum. There are enough you tube videos to get the...
99735
alienrelics
Jun 18, 2013 1:39 am
... Thank you, very informative. Steve Greenfield AE7HD...
99736
jcc3inc
Jun 18, 2013 2:07 pm
Hello, I've considered various means of providing movement and I prefer rack and pinion; the cost is relatively low, any length can be achieved, and as far as...
