Drill Guide Ruler (mm & inch)

Drilling holes on a perfect pitch becomes a piece of cake...

Drill the 1st hole. Place a screw or loose drill in the 1st drilled hole, set the desired distance between the holes and drill the 2nd hole in mm (or 1/16 inch) accurately compared to the 1st hole. Tip: use a spirit level under the ruler, or even better, attach a small adhesive level (see example) to the ruler itself.

The base part is usable to 150mm / 6 inch. You can extend to 600mm / 24 inch with self-locking Extension Rulers (150 mm/6 inch each). 

All parts can be printed without support as positioned in the STL files.

I printed with 0.4 nozzle, 0.2 layer thickness, 3-4 perimeters for strength and 15% infill.

I have added STL files of the rulerparts with separate engraving parts and as one piece.

• Update 11-11

1. I have added 300-450 and 450-600mm Extension rulers. Also added an End Cap, so the position block is secured for sliding off. For early adopters: please update the 150-300mm Extension Ruler to use the extra extensions and end cap!
2. Ruler parts with inch scale added! Added under [Ruler Parts Inch]
3. Dust Collector added. It can slide on the ruler. It consists of 2 parts and is clicked into place using the same connection as the ruler parts. By splitting, everything can easily be printed without support. Added under [Extra Accessories]

• Update 20-05-2024

1. Cut-outs for extension parts Inch Ruler were missing. This is now fixed.
2. Bushings for Inch Ruler added (5/16" - 15/32", in 1/64" increments)

Size for hole in Inch (SAE) bushings: