Hole Saw Jig

cults3d

A 3D printable jig to aid in the enlarging of an existing circular saw cut, making a very difficult task a piece of cake. Measure the internal diameter of your hole saw part. (this needs to be a tight fit!) Measure the depth of your hole saw part. (and add 10 mm to act as a guide) Measure the diameter of the existing circular hole.(This needs to be a firm fit but not tight) Plug these results in the included SCAD or Fusion files. Print Press the jig into hole saw piece, no need to bolt together as it happily sits there, it only acts as guide to line everything up. The jig I used successfully cut six holes. On hole four the fit was very tight in the circular hole and I snapped the top of the jig when the drill jumped unexpectedly. No need to reprint, I just used the snapped portion as a spacer- Place it in the hole saw first then slide the jig back into the hole saw so it sits on top of the spacer. You can then continue as the overall height of the jig is still maintained. Video of the jig in action https://youtu.be/UX8JNwIaYnk