A few enhancements to the cross cut jig

I've upgraded the fence: it extends both sides of the cut, adds support for small work pieces, and now includes a simple depth stop:
 Then I cut this new little pile of bits of angle for linear bearings:
The old ones varied quite a lot in length, and some didn't prove to be usable. These are very consistent, although occasionally the saw cuts these a little roughly: you have to go slowly to get a good result.

The other problem with the jig is that you get aluminium chips on the rails. Maybe I could place a piece of clear plastic between the rails with a slit in it for the blade. It could sit on top of the fence, and does need to go any further back than the beginning of the cut, which won't be far for aluminium. I don't think wood chips will be a big problem.

The reason the aluminium chips are such a problem is the saw foot has a little slope at the front, so it climbs onto the chips, trapping them, and then scratching the track. I guess something placed in front of this might work equally well, perhaps angled to sweep the chips off the track.

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