Based on the idea of Makers Mashup. I redraw this from scratch to make it double eneded with a built in scrapper. Works fine with PETG but might be better to use PLA for the scrapper as PLA is harder. 1 inch felt pads bent in half. The small notches on the bottom don't really need supports but added to the 3mf file attached.
Enjoy.
The author remixed this model.