G0704 Mill 80mm spindle mount
thingiverse
This mount attaches to the G0704's existing spindle to allow an 80mm 1.5kw water cooled spindle to be mounted to the head. I use it to carve out machineable wax for silicone molds. The mount is very stiff, but I don't know if it's stiff enough for aluminum. Maybe one day I'll make it out of aluminum, but for little more than $10 worth of plastic it's fine for cutting wax. It was designed in Fusion 360. Note: I did end up removing the center bolt from the uploaded file, in case you see the 3rd bolt in the picture. It was just too difficult to get a wrench on the middle nut, so I took it out.
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