I was traveling so if it's not too late, measurements that might be useful
below.  I replaced the delaminated top of my Workmate.  I assume all tops
are all roughly the same size, but to be specific my Workmate is one of the
earlier models with the cast frame.

Each side was 6/4 maple x 29" L x 5" W.   There was a 3/4" deep x 3 3/4" L
x 3 1/2" wide cutout from the bottom back corner of each piece for
attachment to the frames.   (This left a solid 1-1/2" x 1-1/2" x 29" face
on the "clamping surface")  Into the center of the clamping face along the
29" length, I cut a 3/8" wide by 3/8" deep V for clamping round items.

3/4" dog holes were drilled as follows (all centered 1" from front or back
edge):

   - Front edges (4 holes in total): 2@ 1" from each edge, 2@ 11" from each
   edge
   - Rear edges (5 holes in total):  2@ 1" from each edge, 2@ 6-1/2" from
   each edge, 1@ center (14-1/2" from edges)

The 3/4" holes ended up being a bit too small for the Workmate dogs, so I
picked up a large rat-tail file and slightly adjusted them.

I used maple because I had the pieces on hand left over from an earlier
project.  It has been in frequent use for many years now and works great.

YMMV,
Kind regards,
Joe Jerkins in San Francisco


On Wed, Aug 19, 2020 at 12:42 PM Michael Suwczinsky 
wrote: