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Mark VII Shaper Fence Reassembly
Posted: Sun Jul 21, 2013 2:02 am
by JPG
The Mark VII version more closely resembles the current version than the earlier Mark 5 version. It is however a different size.
There are a couple of 'added' parts. More about them later!

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The leaf springs are first to be put into place.

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The 'micro adjust' knob is placed next.

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It is threaded into the fence face bracket. It is easier to do this before the fence is added(bracket turns without detenting and is less like a helicopter rotor).

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Next a screw to secure/clamp, but now we consider the 'added' parts and the reason for them.

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This thread is linked to from
https://forum.shopsmith.com/viewtopic.php?t=11984
Posted: Sun Jul 21, 2013 2:19 am
by JPG
The original shaper fence design(Mark 5 vintage) included 1/4-20 screws and nuts to clamp the fences. The casting had a square(half) shaped cavity into which a 1/4-20 square nut nested. This allowed adjusting the screw with the SS tool kit only. With the Mark VII redesign(and later Mark V) the 1/4-20 screw was replaced with a 3/16-24 screw(and hole) that has a smaller square nut. the casting was not changed, so the nut has excessive space and will turn partially when the screw is adjusted. Part of the reason for this change I believe was the 'standardization' of socket head screws socket sizes.
I initially set out to acquire some 3/16-24 nuts with the same outer dimension as 1/4-20 nuts, but ended up making the 'new parts' instead. A simple L shaped piece with a 3/16" hole.

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The nut is now restrained from rotating as the original larger nut was.

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The wooden fence can now be attached. Realize all that has preceded is duplicated for the other side. For you eagle eyed folks, that nut is not on backwards, both sides of that nut are flat.

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All that is left is the clamping screws.

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And nut plates

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A little more to come.
Posted: Sun Jul 21, 2013 2:30 am
by JPG
While making the 'new parts', I made a set for my 510 shaper fence. FWIW, the red plastic safety shield will fit the Mark VII version. It would also fit the Mark 5 version except for the larger screws.

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Well tis done! I will include a pix showing all three versions after I take it!

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Posted: Mon Jul 22, 2013 12:57 am
by skou
JPG, (and for the rest of you) the one in the foreground
WILL mount on the E or ER model table.
It's the only one, with just one adjustment on it.
This I know firsthand. Had one.
steve