Assorted CNC tool adapters for 65mm mounts

I made these tool mounts for convenience on CNC's that use a 65mm diameter spindle mount. Left to right in the first photo, a Roland style dragknife, a 2.5W diode laser, a 40W Neje diode laser, and a router table stand.

The STL files are named accordingly. The dragknife is a 2-part assembly, using M3 bolts and nuts and some zip ties. The v2 holder has slightly stiffer and wider suspension arms; either version will work best in PLA.

I also uploaded my air assist nozzle design for the 2.5W laser, in case you don't already have a good one. I was inspired by djk4linux@mpcnc forums excellent Neje nozzle design, and made this along the same lines. The air hose hole is slightly undersized to be drilled after printing with a 1/4" bit. The mount for the 2.5W laser also has an upper hole to help secure the air hose so it doesn't mess with focus.

Notes:

I decided to put the bottom flange on the Neje adapter because this laser is very powerful and can produce a lot of smoke. Without the flange, I observed even with air assist that a lot of smoke would recirculate upward through the mount can, making it back into the cooling fan. This may expose the lasers and mirrors to smoke. The flange reduces the amount of smoke that will make it back into the fan by eliminating the shortest return path. Some smoke can still make it around the outside of the can and router mount if your ventilation isn't great, but it's much less and more diluted. All of the cooling air can still flow freely through the housing; so far I haven't noticed any appreciable increase in diode temperatures with it.

Category: Machine Tools