Thread: Wobblycogs CNC Mk2
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17-08-2013 #11
Really like the z-axis idea Jazz, thanks for that. As suggested I've...
- Moved the bearing z-axis blocks down to almost the bottom of the plate.
- Increased the spacing between the z-axis bearing blocks to 250mm.
- Beefed the z-axis up to 20mm plate all round (except the bottom spacer plate, will this be ok?).
- Upgraded the motor mounting brackets to 15mm as they looked a bit weedy up against the 20mm back plate.
- Put holes up the z-axis plate so the brackets can be adjusted up and down, in the lowest setting shown I have about 45mm of cutting depth with a 50mm bit. I'm sure this will be enough for the vast majority of the time.
- Added the chip plate for the y-axis ballscrew (still need to actually attach the z-axis to the screw)
I've got to get back to fixing the house (plastering, one of my least favourite jobs) but I'll try to draw up the other ideas tonight.
P.S. I was thinking the gantry back plate would have to stay because the screw is mounted to it but now I think about it I could mount the screw on one of the gantry beams. I'm tempted to still lock the two beams together vertically but with a small plate in the middle of the span. I'll have to have a think about the cover idea as I'm not clear how it would work (I think I've seen what you're talking about in another thread though).
Cheers.
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