Ready Steady Eddy

[EddyCurrent]

Have you thought how you will bolt the Z rail blocks and the Y rail blocks on as they appear to clash with each other. It might be better to make the Z back plate wider. ..Clive

Thanks, they are kind of close but the bolt holes don't line up so I was thinking they would bolt onto tapped holes in the plate with hex head screws from their own respective sides but as I've never fitted them before it's just a plan until I get the hardware in front of me. Widening the plate would be a useful option.

[JAZZCNC]

Thanks, they are kind of close but the bolt holes don't line up so I was thinking they would bolt onto tapped holes in the plate with hex head screws from their own respective sides but as I've never fitted them before it's just a plan until I get the hardware in front of me. Widening the plate would be a useful option.

I missed this which is unusual for me has it happens often so I'm always watching for it but you didn't have it like that before so didn't pay any attention this time.!! . . . . . Clives correct thou you can't do it you'll need to lower/lift or widen. . . Chicken and Egg problem.???

Regards 90Deg problem then yes needs same attention but milling ends of 80mm box section will need big mill with large tooling. Having plates for gantry sides which bolt to base plate and are held 90deg with bracing brackets is much easier to do.

Welding will be good but will still possibly try to twist when released from Jig. Even then you can't be 100% sure faces of both box sections are exactly on same plane and that's why I'd use epoxy in this situation.

[EddyCurrent]

The reason I used box section for gantry sides was due to large strength advantage over plates.

I thought this might be an idea for attachment of sides to aluminium.



By welding a plate (with nuts welded to the back of it) about 6mm in from the end of the box section, I could easily file the box profile edges to 90deg. I suppose you could then fill the 6mm deep cavity with epoxy if need be. Maybe use 1/2" plate and drill & tap 4 holes instead of welding nuts behind a thinner plate.
Epoxy plan for gantry horizontal members will be fine.



1. Ball screw bearings moved to outside of frame or as suggested I might use BK/BF instead.
2. Support brackets for sides increased in size
3. I think you are saying that to fit the bearing blocks I need to drill through the ally backplate and use nuts & bolts rather than tapping the backplate and screwing in from each side with set studs ?