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Reply by William Shelley

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Posted on Shop Fox W1674 2HP shaper?

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William Shelley

564 posts in 1438 days


#1 posted 12-22-2017 09:03 PM

I ordered this spindle: https://www.amazon.com/gp/product/B005W0WCQS

It’s for the W1702 but every picture/diagram I can find shows that the method of attachment to the spindle cartridge is the same as on the W1674.

Sorry for my noobish questions in this thread, but this is my first shaper. I’ve only used my dad’s powermatic 3hp shaper a little bit, which has a 1” solid spindle, and he uses 1-1/4” cutters with t-bushings.

Since I’d like to avoid “wasting” money on tooling, my thoughts were that wherever possible, I should buy 1-1/4” cutters and bush them out. That way, when I eventually upgrade to a bigger unit, which might even be in a year or two, I can reuse all my cutters.

From what I’ve read, it’s not a good idea to try and swing too big of a diameter of cutter on a lighter-duty machine like mine. I get that, it puts a lot of stress on everything. However, looking at the options available for tooling, I see that the Amana finger joint cutter with a 1-1/4” bore has a 3” diameter, whereas the cut diameter of the 3/4” bore version of the same cutter is only smaller by 1/8”. Which leads me to believe that in that example, there’s literally no difference as far as the machine operation is concerned with the two cutters.

A 1” spindle has about 78% more cross sectional area than a 3/4” spindle, 0.785 sq in compared to 0.441 sq in. So the 1” spindle should be much stiffer than the 3/4” spindle, which makes it a better candidate for bushing up to 1-1/4”.

-- Woodworking from an engineer's perspective


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