HotShoe Adapter
thingiverse
I'm made an Adapter for me. If you want it, use it. My "HotShoe" ar 18mm x 18mm x 2mm.
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With this file you will be able to print HotShoe Adapter with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on HotShoe Adapter.