Hello,
About three weeks ago i got bit with the bug and have been looking over these forums, searching google, ebay, and just trying to find out anything i can about building a plasma table. Finnally the other night, as a proof of theory i put together a square with 2x3 tubing and some roller blade (608) bearings i had and made a rolling gantry. After slotting some bolt holes i was rather suprised with the amount of slop i was able to remove and how little deflection i had. So here it is. I have decided to go full plunge. My table is a little under 5x9 so it can accomodate a full 4 x 8 sheet. My goal is to be able to cut brackets for use on offroad 4x4 suspension out of 1/4 inch steel. So my questions are as follows.
1) Cnc setupWould this be a reasonable setup, good power supply? stepper motor size? good drivers?
2) If those stepper motors are reasonable would acme thread be ok for the table. I understand backlash can be a problem with acme thread but for the purpose of this table just cutting 4x4 brackets would acme thread be ok?
3)If acme thread is ok, what would be a good size. I have found quite a few postings on this but mostly for smaller tables. Would 2 start be good for a 4x8 table. I need some level of accuracy but still be able to get to the other end of the table in under 2 minutes.
Any help would be greatly appreciated. Links, threads, blogs, anything that would answer these questions for me.
-Aaron