this thing is in use for a few years. 3D-printers were not common then, so the tolerances ( drawing the holes bigger ) is NOT condisered in this drawings! My Dustshoe is milled. If you want to 3d-print this thing, please use the XY-Correction of your slicer on my STLs, or use the Stepfiles to correct the Holes for your 3D-printer.
I used screws M6x16, reduced in Diameter to 4mm under the head. Secured by M6 grub screws. If you wand to secure with locktight, use M6x20.
A little springloaded ball in a Shell ( sorry, don´t know the english name for that ) used to secure the shoe in closed state.
For 3D-Printing when using inserted Nuts, please use the Stepfiles and integrate there..
Cause i changed my CAD-system since the construction of ths thing, i cannot change the originfiles myself. I use the Stepfiles too.