Definately a scrapyard challenge

[motoxy]

OK Here is a thought on redesigning the gantry. Any similarity to Jonathan's machine is purely down to plagerism. I have looked at a construction that I can do myself. I will make some enquiries tomorrow about acccess to a m/c shop.

[Jonathan]

Any similarity to Jonathan's machine is purely down to plagiarism.

Problem with plagiarism is, as they always tell you at school, you copy other people's mistakes! I've put the ballscrew on the Y-axis of my machine in a sub-optimal position, which you've copied! It needs to be closer to cutter / between the rails. The problem is everything between the cutter and ballscrew can deflect, as the linear bearings don't offer much support in that direction. I posted more about it here:

http://www.mycncuk.com/forums/showth...h-X-and-Y-axis

(But don't start thinking of two ballscrews like I suggest there - it's excessive! Just put the ballnut on the other side.)