The model
The base plate carries two screw blocks, each taking a nut and a threaded screw. The pressure pieces sit on top of the screw tips. Each side clamps independently, so the two workpieces may have different thicknesses, up to 39 mm.
The base plate can be screwed down with three countersunk screws (4 mm) or held with a clamp. The hole in the corner leaves room for squeezed-out glue, and the hollow corner block doubles as a tray for screws.
Checked by calculation: all parts mesh with workpieces of different thicknesses and fully open without intersecting. 0.28 mm of air remains between screw and nut.
View print notes (German)
Print notes included in German; part names are self-explanatory.