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We're having a little difficulty with the wiring at the moment, so I took this opportunity
to whip up a cover for the exposed Y-axis belt, and thus finish off the assembly.
First, I had to tweak the belt and pulley spacing, by shifting the stepper pulley inboard a smidge
(that's a technical term) and then turning a bit more of the inner face off the upper pulley.
I also had to deepen the recess on the back, but all together, that made enough room I can
have a full cover over the pulley, and not have to make it too thin.
Of course, I'd rounded the stepper mounting block for aesthetics, and so I was
obligated to make a matching recess in the new cover block.
The inner clearance was a simple matter of scribing a few lines and milling up to them,
as the dimensions were not critical. The front face wound up about 0.130" thick.
I was, as it turned out, obligated to add just a touch of extra clearance for the nub of the ballscrew shaft,
which I applied as a divot, rather than milling the entire face down to that thickness.
Once I had the cover fitted, I was able to trim the top face to size, and yes, round those corners to match.
A few quick measurements found a location for the two screw holes, which were drilled and counterbored.
And finally, since I had that corner rounding bit out, I took the corners off the inner spacer plate.
And here she is cleaned and reassembled. Still not water-tight, were I to start splashing flood coolant
all over everything, but it's quite well protected against chips, swarf and other gunk.
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