Steel Framed Router

[GTJim]

Ok ive just done enough tinkering to give you an idea, of where bracing could do with looking at.
It may also be an idea to widen up underneath the table on the gantry just enough to stop the diagonal flex when the spindle is working at the far reaches of the gantry axis.

All the best Rick

If I was to mount a plate (as shown in pic) to the back of the axis with many fixings would that stiffen up the gantry sufficiently?



The current design supported round rail, but this was down to cost and if available I would use profiled rail.
I also think the 25mm ballscrew is OTT but now that it has been mentioned I'll look at 20mm with 5mm pitch with pulleys and belts. I am concerned about whip in the 16mm screws, but again it could be a saving.
I am hoping to use a single ballscrew on each axis but if I find problems I think it would be easy enough to add an additional one, so I'll look out for a 4 motor and driver package.
Never thought about resonance, but kiln dry'd sand could be a good solution.

Thanks for all your input and please feel free to continue.
Jim


I can see this becoming a bit of a monster and it has to fit in my garage with all my junk.