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This is an awesome idea that I am using for our 3D print shop for my classroom. However, the Marvin feet seem not to fit into the the display case. I printed using all of your settings, however the opening is slightly smaller than the feet. Any ideas or fixes?

Printer: Dremel 3D45
Display: Printed using ECO-ABS
Marvins: Printed using various colors of PLA

All settings as directed.