Posted on March 4, 2022March 4, 2022 by Dale Phillips Router Trimming Attachment Router Trimming Attachment by James Gilbert Originally published as Guild of American Luthiers Data Sheet #135, 1980 This attachment plate is used on the Dremel Moto-Tool in place of the regular router base plate. The other end is drilled and slotted to fit the Sears router attachment part #25731. The Sears attachment is used for laminate trimming. It has an adjustable slide and a roller guide to follow contours easily. The full size drawing below could serve as a rough template for cutting and drilling a piece of 3/16" aluminum. The only modification that I have made to the manufactured units is to drill an extra hole in the Sears attachment for securing it to the base plate. This way it can still be used on a regular router.