Universal Router table (or bandsaw) insert

Router mounting plates have a large hole in them for the bit to sit up from the table surface. This hole is intended to accommodate a plastic insert that has various inner holes to match the bit being used. For some reason, these inserts are stupidly expensive.

If you enter the OuterDiameter of your insert hole, the RimDiameter of the inner hole, and LipDepth of the insert, the OverallThickness you want this insert, and the BitDiameter of the center hole of the insert, you will get an STL that will print these at will. If you do not want a center hole, set BitDiameter to zero.

SCAD expects the dimensions in millimeters. There is another SCAD file provided (RouterInsertInches.SCAD) that you can use that provides for the dimension in inches if you prefer.

To begin with, use a caliper to measure the above values for your table, and tweak from there to get a perfect fit. I used PLA and they work great.

These are also good for making bandsaw table inserts, but you need to