Simple adjustable postcard frame

This is a simple adjustable frame for postcards, leaflets and so on.
It consumes minimal amount of filament and can be printed without any supports.

To adjust the frame for your size you'll need FreeCad, a free piece of software for parametric modelling.
Adjusting the size is as easy as editing parameters in the spreadsheet. After making changes you need to select the "Body" in the "Model" pane and export the file as .stl.

The default size fits a postcard.

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