Looking for tips on making 2.5 x 1.25 mtr table

[psiron]

Thanks guys, I'm using the gecko 540 with nema 23 sm from cncrouterparts. I will look at your build Jeff as I may revise the gantry slightly. I'm not too concerned about possible gantry twist as the gantry is driven from both sides, I personally think this will eliminate any possible problems. You should look at the designers video and work produced with this machine, it's highly impressive with excellent travel speeds and tolerances. I'll post some pics as the stuff arrives.

Thanks again for your time, the advice is invaluable as it's my first build :)

[Smiler]

Hi Psiron,

I didn't mean twist in that way, that would be racking where one side moves more than the other. What I mean is physically twisting the 4x2 channel which will show up as little ridge lines on your cuts. When I first put my design up, Irving and a couple of others commented that as the rails were unsupported the gantry would twist and they were 100% correct, I soon changed to profiled rail mounted on the steel box section and all my problems went away. I think you'd see a similar situation midway across the table. I suppose a lot depends on what you want to produce witht he machine, as it's an 8 x 4 I presume you are looking at cutting sheet stock so this might not be much of a concern if it's just shapes you are cutting.

I'll have a look at the videos (didn't see them) and compare them with how my machine performs

Jeff.