Speed Square Rafter Imperial Ruler + Traditional Hip/Valley — Design V2.0 3D Print STL and 3MF

In 1925, Albert J. Swanson invented the Speed Square — part rafter square, part protractor, part marking guide. It became the carpenter’s pocket tool in the US. But here’s the catch: it was born in the Imperial system. Great if you’re framing in inches. Not so great if you’re working in metric.

So I designed my own in 2025:

• All-metric rafter square

• Rise/run markings for common rafters, hip/valley cuts, and top notch

• Printable as a solid jig or lightweight frame

WHAT INCLUDED:

• Traditional Hip/Valley system
• 7.5 inch long main ruler
• 4 inch long increment ruler
• Degree system up to 90 degree with 1 degree increment
• Pivot Point
• Scribble notch for main ruler increment at 1/16 inch
• 5 mm lip thickness with insertion notch for the main Square
• Separated Main Lip Print and Main ruler print
• Double-sided labels

ALSO AVAILABLE:

• Separated Main Lip Print and Main ruler print version
• Come with insertion notch for the main Square for easier print

Printing Advice:

• Use 0.2 mm nozzle for a better result
• Only works with Klipper flavoured G-Code
• Use Colour Change G-code M600 for 3-layered colour white-black-white system