Moore #3 Jig Borer Restoration

bkimbrough · Nov 29, 2020

Hello,

I just wanted to share some pictures of my Moore #3 Jig Bore B277. I bought it in June 2019 and I just about have the restoration complete. The machine was not functional when I got it. The down feed speed selector was stuck and upon disassembly I discovered one of the shafts in the down feed gear boxes was bent (twisted).

The entire machine was taken apart and rebuilt, with the exception of the spindle.

Brad

bkimbrough · Nov 29, 2020

Here are a few more photos.

Brad

BSCustoms · Dec 1, 2020

Beautiful work!!

Brandenberger · Dec 1, 2020

bkimbrough said:
Here are a few more photos.

View attachment 306106 View attachment 306107 View attachment 306108 View attachment 306109 View attachment 306110

Brad

I'm curious what kinds of tolerances it holds?

I assume you didn't re-scrape anything.

-Phil

bkimbrough · Dec 2, 2020

Brandenberger said:
I'm curious what kinds of tolerances it holds?

I assume you didn't re-scrape anything.

-Phil

Phil,

Nothing was re-scraped. I have just started looking into its performance. The table is +/- .0001 over its entire 11 x 18 inches. This surprised me because it looks a bit worn. There is no perceptible tilt on the table. The spindle runout is +/- .0001 which I believe is poor for this machine. The quill has no detectable runout over its full travel.

Once I get some tools I can do some more tests.

Regards,

Brad

bkimbrough · Dec 2, 2020

Thanks. I see your in Washington. I grew up in Centralia.

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