3 1/2 inch (89mm) to 65mm CNC Spindle adapter sleeve

thingiverse

A simple adapter enables mounting your 65mm spindle into a standard 3.5 inch router mount from leading manufacturers like Bosch, Makita DeWalt, Ryobi, or Draper. The included STL file contains an integral skirt to promote superior adhesion and reduce warping. To assemble the adapter, three 45mm M3 cap head screws are used for secure tightening. Measuring 80mm tall, the part offers ample space for efficient screw insertion. Suitable printing options include PLA material with a perimeter of 2mm and approximately 30% infill levels to achieve both lightness and exceptional strength. A suggested layer height of 0.2mm will result in three distinct skirt layers due to its total thickness of 0.6mm. With careful handling, the integral skirt can be easily detached. To maximize inter-layer adhesion, it's advisable to print this adapter at a temperature five to ten degrees above your standard settings. This precaution becomes particularly crucial when securely fastening the M3 screws which generate significant stress on the component layers. The entire design benefits from an integrated 0.6mm skirt rather than relying solely on traditional raft-based support.