This chuck key holder for my Central Machinery Model 45861 9x20 Lathe is based on an original design by "Clough42" (available here : https://www.thingiverse.com/thing:4392251 ). That design was made for a different model lathe, so I recreated the design with some minor modifications to make a version to fit my lathe. Included in the photos is a drawing showing the relevant critical dimensions so you can see if this will fit your lathe.

Two versions of the holder are provided. The first and simpler version fits a bit loosely, so it slid back and forth a bit more than I liked. The second version (which takes a bit longer to print) has an integral spring clip to make it fit more tightly.

The OnShape 3D CAD files for this are available here:

https://cad.onshape.com/documents/b82f65a9ad2defe11f13ac1f/w/aeed53b2c823ef139dc1ec8d/e/9ba38b228003b1e084fcff6e

Print instructions

I printed in PLA; use the 3mf files provided. Otherwise:

• print top side down
• no support required
• 10% rectilinear infill