Corner protector maker

A cap that slips over the square corner of a shelf or table top, sized to your board, with a rounded corner to soften knocks. Print it in TPU for a soft bumper, or PLA or PETG for a hard cap.

Your board

Board thickness mm Fit

Measure the thickness with calipers if you can. Shelves are often 15, 18 or 25 mm.

Covers

Top, edges and underside Top and edges

Clips over the corner, so it holds on by itself.

Shape

Reach along each edge mm Wall thickness mm Corner rounding mm

Corner rounding is the radius of the outside corner, the part that gets bumped. For a soft bumper, use thicker walls (4 mm or more) in TPU.