I designed this adapter in order to place my Canon 600D on a Sky-watcher HEQ5 mount by using a dovetail vixen-style bar.

The two screws connecting the bar to the adapter are the classical non metric 1/4" 20tpi 3/4" long and are 3cm apart. I had longer screws so I put some more washers.

I had also some camera tripod screws left so I designed the knob and I used one of them. You can use a knob from a tripod instead.

The little screw upside down in the photos is an M3 12mm long screw which goes inside a screw hole on my Canon and prevents the camera from tilting issues during the exposures. It is completely unnecessary for light lenses.

Prusa i3 - like

No

No

0.3

30%

Bed temperature: 80°C
Hot-end temperature: 185°C
Cooling fan always on.