SNARE DRUM LUG DRILLING GUIDE

This handy device makes laying out lug mounting holes a breeze. There are two rectangular "viewing ports" that can be used to perfectly align the jig with your lug centerlines. There are three marking holes: the outer holes are for the lug mounting screws, the center hole is your drum's horizontal centerline (you probably won't need to mark this on the drum).

I included the .stl file ONLY to provide a visual representation on here. You MUST customize the .f3d file to fit your drum as follows:

1. Measure your lug mounting hole spacing, from center to center, in millimeters.
2. Open the .f3d file in Fusion and edit Sketch 8 so that the center hole is half the depth of your drum (69.5mm in the screenshot), AND the marking holes are half the mounting hole spacing from the center (24mm in the screenshot).
3. Edit the very first Extrusion (second step in timeline) to be 8 mm less than your drum depth. This will take the thickness of the "T" part of the jig into account.
4. There is no need