DIY Calibration tools

I had purchased Fowler 52-520-109-0 Dial Indicator with 1″ Travel with +/-0.5% measurement accuracy.

Fowler Dial Indicator

I wanted to measure the alignment of my table saw blade and fence. You can buy tools that do this using the miter slot track with a dial gauge included for about $70. For example, this one:

Example tooling

This had fairly limited travel and I already had a dial gauge. So I designed one. I did the design while I had my morning coffee before work. I cut it while finishing my email so I built this with about 30 minutes of total time. Lockheed provided access to the laser-cutter and also provides the material for hobby use:

Component

I made the part from 1/4 inch think acrylic and manufactured it on a laser cutter (Glowforge). I tapped two M6 holes (5mm hole diameter) in the back so I could get a secure bolt.

Tool in Action

In order to cut this, I used the arrange and post processing with a 0.1778mm kerf:

Part planform

Fusion 360 renders this in a full joint analysis.

One thought on “DIY Calibration tools

  1. Laurel Booher says:

    Such a creative, intelligent son always looking for new things to learn! I was so impressed when I saw all the furniture and other things you made. Proud of you!!

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