These brackets create a floating outer frame around an already stretched canvas. They are decorative and alignment pieces, not structural supports for the canvas itself.  The intention is to help you build minimal frames for canvas artwork without any complicated woodworking. 

Instead of cutting precise 45° miters or doing joinery, you can simply:

1. Buy a length of wood strip / slat

2. Cut four straight pieces to the length of the canvas sides

3. Insert them into the printed corner brackets

4. Assemble the frame around the canvas

The brackets hold the frame square and aligned while also creating a small offset between the canvas and the wood frame, producing a subtle shadow gap / floating frame effect.

The decorative front edge can also be styled to resemble a dovetail joint, adding a bit of visual character to an otherwise simple frame.

This makes it easy to produce attractive frames even with minimal tools - a simple saw and a 3D printer are enough.

Customization

The included CAD file allows you to easily adjust:

• Canvas depth

• Frame spacing (shadow gap)

• Wood strip dimensions

• Decorative corner shape

 This means the bracket can be adapted to any canvas thickness and almost any wood profile.

Typical Use Case

Perfect for:

• framing stretched canvas paintings

• creating floating gallery-style frames

• quick DIY framing without woodworking tools

Printing

Paint on support around the slots for the screw holes (see the slicer screenshot). No other supports necessary. 
No special requirements. PLA works well for most cases.