johnt
02-13-2005, 06:28 PM
Is anyone using Hobbycnc boards for their plasma?
Are 200 oz/in motors sufficient for a 20 lb gantry?
Thanks,
John
Are 200 oz/in motors sufficient for a 20 lb gantry?
Thanks,
John
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View Full Version : Anyone using Hobbycnc boards for plasma? johnt 02-13-2005, 06:28 PM Is anyone using Hobbycnc boards for their plasma? Are 200 oz/in motors sufficient for a 20 lb gantry? Thanks, John accuratemike 02-14-2005, 05:14 PM I think you could. I use a Xylotex & 187oz motors to push a 55# gantry 90ipm max. I figure that it would take 400oz motors to push me to plasma speeds, but with a light gantry, 200oz could probably do it. MIKE coherent 02-15-2005, 07:49 AM It'll work fine. Just use something like 5 tpi ballscrews/nuts. I upgraded from acme screws to ballscrews and with a xylotex board and 270 oz steppers I can now rapid at 420 in per min with no lost steps using mach 2. A plasma torch is a lot lighter to push around than my router... -marc kanankeban 02-19-2005, 02:10 PM It'll work fine. Just use something like 5 tpi ballscrews/nuts. I upgraded from acme screws to ballscrews and with a xylotex board and 270 oz steppers I can now rapid at 420 in per min with no lost steps using mach 2. A plasma torch is a lot lighter to push around than my router... -marc Hi mark, could you post dome pictures of your table? Regards, Hector hobbycnc 02-19-2005, 03:54 PM It'll work fine. Just use something like 5 tpi ballscrews/nuts. I upgraded from acme screws to ballscrews and with a xylotex board and 270 oz steppers I can now rapid at 420 in per min with no lost steps using mach 2. A plasma torch is a lot lighter to push around than my router... -marc Anybody consider the electrical "noise" from the plasma torch? Dave Rigotti accuratemike 02-19-2005, 08:22 PM Anybody consider the electrical "noise" from the plasma torch? Dave Rigotti Dave, why don't you enlighten us ? Is plasma noise a "deal killer" with your boards ? Others that you know of ? Just curious. (Luckily, I have no torch noise to deal with) MIKE hobbycnc 02-19-2005, 09:03 PM Dave, why don't you enlighten us ? Is plasma noise a "deal killer" with your boards ? Others that you know of ? Just curious. (Luckily, I have no torch noise to deal with) MIKE We've never had any feedback from users and I don't plan on making a Plasma machine to test it. I do know of other drivers that have had trouble with. Thats all the enlightening I can do. Dave Rigotti Dan Mauch 02-20-2005, 09:08 AM The problem with plasma cutters is the EMI can cause false triggering of the the step motor drivers. What seems to be unanimous is that the hypertherm higher frequency is less of a problem that other brands. Careful earth grounding of the plasma cutters frame, the plama cutter itself grounded to the same earth connection and shielding the pc are just some of the ways to prevent lost stepper/ interference from the plasma torch. |