These brackets allow you to fix your woodworking projects in place at any angle. You can use any kind of rope or tension belt so even large furniture projects should be fine. I use them to fix hexagons in place when gluing them together. Sometimes the angles I cut aren't perfect, so my go to method is gluing them together at the proper angle and filling the gaps with wood putty. This method is fine for decorative work since there is absolutely no stress on the finished piece.

This is the first thing I have ever created in OpenSCAD. I'll happily accept tips in the comments on how to improve.

Several common angles are available as STL files in two different widths. The smaller ones are suited for paracord, the larger ones are for tension belts. If you need any other combination of width, arm length and angle, feel free to customize the Thing to your liking. You can adjust the following parameters:

width

Total width of the bracket. Wider brackets can accomodated wider ropes or flat belts and distribute the force more evently on a greater area.

bracket_angle

Angle of the bracket. 60° Triangle, 90° Square, 108° Pentagon, 120° Hexagon or custom angle of your liking.

wall_height

Height of the side walls. They help to keep your rope or belt centered and prevent it from slipping off.

wall_thickness

Thickness of the side walls. There is no particular load on these walls. But the thickness of the sidewalls determines how wide your rope or belt can be. => rope_width = width - (wall_thickness * 2)

bottom_thickness

Thickness of the wall that touches your part. A thicker bottom also increases the distance between your rope and your part if that is something you need.

groove_edge_dia

Diameter of the rounded edge in the groove.

arm_length

Length of the two straight arms of the bracket. Increase for larger parts but keep the size of your printing bed in mind.

corner_hole_dia

Diameter of the the hole in the corner of the bracket. Decrease if you need a sharp corner, increase if you want more wiggle room.

loop_width

Width of the loop at the end of the two arms. Should be adjusted if you significantly increase or decrease the overall size of the bracket. Setting it to 0 effectively removes the loops.

loop_offset

Offset to compensate large loops when the bottom_thickness is high. Use negative values to recess the loops into the part.