If you need to pass wires through shelves in a billy bookshelf you can cut a corner off, but it might often have unaesthetic edges.

Use this little item to make it look better.

The stl here suits a 20mm sided triangle on a 19mm thick shelf

Requires no support, I printed it at 0.2 using PETG

Print Settings

Printer Brand:

Prusa

Printer:

Rafts:

No

Supports:

Resolution:

0.2

Infill:

Filament: any PETG White

Category: Organization