Yet another Replicator Foot. Very similar to thing:23933 but it's not a derivative. The self adhesive Gripper Pads on the foot appear to work extremely well. The slots for the Replicator sides have small ridges in them that should help these feet remain in place.
no supports, no rafts, .27 layer height, 10% fill.
It prints fine with the slots down, and they are identical for all four feet.
The pads that fit in the bottom of the feet are one inch diameter, with adhesive backs. It's a good high density foam with a good gripping surface, and I think I found them at either Walmart or Lowe's Hardware. The exact brand is "SoftTouch by Waxman, #7385 Gripper Pads", 16/pkg. You should be able to find that or something equivalent at just about any hardware/Megastore.
When installing, get the slots lined up and started on the sides, then shove down hard on the top corner of the Replicator. The slight bumps that are in the sides of the slots should get a good grip on the plywood, and I'd be surprised if they ever came off without deliberate force.