The Mrs aint gonna be happy about this little project!

[r0bsk1]

Ok so here's my latest incarnation. Gantry is 2000mm wide. Rails are 25mm.

I've stacked 3 60x60x5 box sections on top of each other and will be welded together. The edges have a 10mm radius on them so will need several passes to secure them.....at least thats how they did in on Discovery's Extreme Engineering on a bridge build. Do you think i'll need a backing plate?

Each 60mm section will have 2 supports to prevent the beam falling forward or back. I've used 20mm ali plate for now but may weld box section cut-offs direct to the beam to form a 'T' on the ends instead.

A spinning ballnut mount is bolted to the back of the Y axis bearings.




Ta
Rob