Caliper-Assisted Outside Angle Finder (Goniometer)
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Simple two-piece tool to measure outside angles with the help of digital calipers.
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Model information
- Source
- Printables
- Category
- Tools
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
New V3 with grooves for grip, angle markings, and modified dovetail channels! Slightly tighter clearances as well for less play.
New V2 dovetail design added! Slightly flexible filament like PETG recommended to join the pieces without damaging them.
Easy to print angle finder that uses the readout of digital calipers! Shoutout to Archimedes for popularizing the geometric spiral that inspired this design.
Guide PDF is provided, but basic steps:
- Zero your calipers with the angle finder fully closed
- Use the angle finder to find an angle
- Measure the angle finder with calipers again to get the angle reading (1 mm translates to 10 deg)
Precision is roughly +- 1 degree, depends on printer dimensional accuracy and seam placement. Avoid having seams on any measured or measuring surfaces.
Optionally, you can upscale the parts to 254% in your slicer and use inches on your calipers instead, where 90 deg shows as 0.9 in.
NOTE: The two halves are different parts.