Aircraft Countersink Kit Gridfinity Holder

This is a Gridfinity tray to hold a microstop cage and a number of countersinks for use with it.  Specifically it was designed to hold the #133 microstop sold by Aircraft Tool Supply and the countersinks that are included when you buy it as a kit.  I found that the minimum space that the microstop would take up was going to be 1x3 squares pretty much no matter how it is adjusted, and that wouldn't leave much room to fit the countersinks.  So I made it 2x3, and added recesses for many more countersink bits than the kit includes.

It may fit other microstops, but you'll have to print it and try for yourself if you have something different.  I sized the recess so that the microstop should fit no matter how you have the cage adjusted.

Like my other Gridfinity models, the base is altered to accept 6x3 magnets as a press fit, with the upper surface of the magnet holes modified to make the slicer bridge across correctly for a clean result.  Due to the size of this model, I have included sacrificial “mouse ears” in the CAD to give the ends more surface area to help prevent them warping off the bed.  These will need to be removed after printing.

The unit pictured was printed out of Overture PLA on my bear upgraded Mk3S+, using a 0.6mm nozzle, at 0.3mm layer height.

https://www.aircraft-tool.com/detail?id=133KIT

Edit 09DEC25:  Added a version for the microstop only without any countersinks, since they also sell it by itself.  I just cut off the squares not needed a little crudely, so it's not quite centered in the 1x3 squares.