Uploaded July 2022 | Updated September 2026, 1 hour ago

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To figure out the depth on a router dado bit, I came up with this spiral gauge. It was a fun build...let me take you along with you and we'll walk through this step by step!

Step by step website (with material and tools lists, all free): makethingswithrob.com/spiral-gauge

Main video that explains this: youtu.be/zfN_qGFqDOU

Become a patron!: Patreon.com/makethings
Thank you to my patrons!

Michelle B
Keith Current
William L McNally
Jerry Adams
Tommy QR
Zach Finch
Rich Lightfoot

0:00 Introduction
0:52 1. Cutting Blades
3:40 2. Template & Marking Each Blade
5:01 3. Blade Gluing
6:29 4. Baseplate & Acrylic Center
7:33 5. Base Enclosure
9:44 6. Attaching the Enclosure
10:09 7. Access Window
10:37 8. Adding Measurements
11:23 9. Attaching the Plexiglass
12:43 10. Assembly
13:06 11. Operation