I have cut out a wooden copy of the 1911 and used the oscilating sander to get a good close scale copy,3 coats of poly and attached it to a backer board of plywood also poly'd.Then I made a outside cutout allowing for the Leathers Thickness,beveled those edges and again poly'd that piece.Now by casing the L well you sandwitch your L between those froms and allow it to dry,usually over night.Now you will have your top piece to trim and sew to your back!If prepared correctly and poly'd well can be used repeatedly.I close the forms and hold them together with "C" clamps.Hope you find this helpful!