Wobblycogs CNC Mk2

[Wobblycogs]

I couldn't get off to sleep last night for thinking about the CNC so I decided to get up an do a bit to the design. I wanted to address a couple of issues:

1) the rails didn't mount very cleanly onto the aluminium extrusion
2) it felt like too many parts were becoming sufficiently complicated that I would need access to a milling machine. I know I could get some / all of parts made for me but part of the fun of this project is coming up with a design I can make myself.

With those issues in mind I switched over to using aluminium rectangular section 100x50x6. The other major change was to mount the rails on the front of the gantry rather than top and bottom. I'm not sure if this is the greatest of ideas but I think it'll make the build quite a bit easier.

The shots below show the Y and Z axis together. There's a bit of tidying up to do moving bolt holes but the basic structure is in place.



If vibration is an issue with the box section on the gantry I'll pack one or both beams with fine gravel / sand. Anything shown in red will be tooling plate.