Sunday, September 7, 2008

The 1377 Project, Pivot Washers

As I mentioned earlier this week, the 1377 project still isn't completed. The pump arm had too much play in the slot at the pivot pin, so I decided to make some Delrin washers to take up that wiggle.

Drilling some Delrin turned down to 1/2"

Parting off a washer. Each one needed to be .019" thick.

Parting left a burr at the hole which was easily trimmed off with an Xacto knife.

I lined up the washers and inserted the pump arm, at which point everything instantly got misaligned.

So I used a tapered drift to line things up again, and reinserted the pivot pin.
Now the wiggle is gone.

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