This model lets you easily and, more importantly, safely dispose of used razor and utility blades. The opening to the box is at a 60 degree angle and is just bigger than the thickness of a blade making it virtually impossible for anything to fall out. Throwing away a sharp blade into the trash without any protection can be very dangerous to others. Always make sure you protect blades when disposing them.

Once the box is full, you can throw it away in your trashcan. If you want to be extra safe, duck tape the opening to make sure that nothing will fall out and injure someone.

When printing the model, the opening has a chance of get blocked. To fix this, just use a blade to cut through the filament as seen in the gif. Slide the blade back and forth using the sharp edge of the blade to cut the filament blocking the opening. Printing the model upside down should help fix this issue but may cause other issues.

If you want to change the height of the box, you don't need to edit the model. Just use your slicers scale tool and adjust the Z axis. If you do want to edit the model, however, I have included Fusion (.f3d) files so you can do so. If there are any issues all, please let me know. 

Inspiration for this project - https://www.printables.com/model/31994-sharps-disposal-can-for-utility-and-hobby-x-acto-b

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Need to just throw away just one blade? Check out my other model!