About this 3D model

This is an augmented spindle mount for the (stock) rotary tool that comes with the Shapeoko 2. Assembled as designed, the Z axis travel was severely limited due to the top of the rotary tool running into the Z axis thrust bearing plate/motor mount. These inserts fit inside the stock metal mounts and bolt together using the stock 5mm bolts. No additional hardware is necessary. Best of all, this maximizes Z travel: With these mounts I've got 3.25 inches of Z travel (assuming you use a 1/2 inch or longer end mill). This is with the Z-axis makerslide flush with the bottom of the Z carriage. I had significantly less travel with the stock configuration or the other printed spindle holders.