520 Main Table Insert

mountainbreeze · Post by **mountainbreeze** » Tue Dec 27, 2011 11:45 pm

I've been cleaning and adjusting my newly acquired 520 and I have the missing Owners Manual on order. I am seeking feedback on some things that may not be covered in the manual...

I have noticed that the surface of the table insert is below the surface of the main table. Based on my findings, it would seem that this is by design. I have found that the thickness of the insert is 0.25" however, the distance from the surface of the main table to the surface that the insert rests on is 0.27". Thus, the insert is 0.02" below the table. Is this the way it should be?

reible · Post by **reible** » Wed Dec 28, 2011 12:29 am

The instructions are in the alignment section "C" page 27.

Install the table insert in the worktable
46. Place the table insert in the worktable recess.
Use a 5/32" Allen wrench to start both screws.
47. First tighten the rear screw. Then the front of
the insert will be sprung slightly above the
table. Level the insert by placing your hand
on the front of the insert, as shown in Figure B-79, and
slowly turning the front screw until it draws
the front of the insert flush with the worktable
surface.

Ed

mountainbreeze · Post by **mountainbreeze** » Wed Dec 28, 2011 12:53 am

Thanks Ed. I'll be glad when my owners manual arrives.

mountainbreeze · Post by **mountainbreeze** » Wed Dec 28, 2011 11:58 am

Well, I tried that procedure and it didn't work for me. When I tightened the rear screw, the front of the insert did not spring above the table. Instead, with just the rear screw tight, both the front and back of the insert were below the surface of the main table.

What seems odd to me about the procedure is that if the front did spring up and you tighten the front screw just enough to make the two surfaces even, won't the front of the insert now have vertical "play" in it ?

billmayo · Post by **billmayo** » Wed Dec 28, 2011 12:12 pm

I have used a thin shim type pieces of material to help level the table inserts on any of the Shopsmith tables. I find there are various types of plastic like material that works very well. Wood tended to compress over time.

JPG · Post by **JPG** » Wed Dec 28, 2011 2:33 pm

The older (500 etc.) inserts were slightly curved and the screws merely tightened until the ends were flush. With typical sized work pieces, the outer portion of the table provides support so the inserts are not pushed in. It could be a problem if smaller pieces were pushed down excessively, however pieces that small are probably better cut with some other tool.

The newer larger 505 - 20 inserts seem to be not so.much(or my ancient ones have either been flattened by a PO or with age).

Since most of my experience has been with the 500 vintage which is smaller in length, and I have seldom had a situation where it mattered, I have not felt a need to shim them.

FWIW the 10E/R tables have adjusting screws. They could be added to a newer version relatively easily. I know poor grammer, but you get the point!