Shop Trick - $10 Super-accurate Jig for Setting Dead-on 90 Degrees

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Project by ChuckM posted 07-04-2013 04:03 PM 4674 views 37 times favorited 8 comments Add to Favorites Watch

I use my dial indicator alignment jig with the miter fence to align the saw blade to the miter slots and the saw blade to the rip fence. About a year ago, I saw a video by Brian of Garage Woodworks, using a jig designed to set the saw blade at 90 degrees (Brian has released a new vid on this jig: ).

While waiting for a finish to dry this morning, I decided to build a jig along his line of design. Instead of building a new jig, I simply modified my alignment jig by adding two screws, a job completed in 5 minutes (finding the long screws took a bit of time).

In addition to setting the saw blade, it can be used to set or check the squareness of a router table/drill press fence, etc. It can also be used to check if a square is true and square (assuming you have an accurate and true square to set the dial indicator jig first).

Search “dial indicator” on the common online auction sites and it can be had for under $10 plus shipping.

-- The time I enjoy wasting is not time wasted

8 comments so far

View steliart's profile


2851 posts in 2889 days

#1 posted 07-04-2013 04:32 PM

thats a need idea, great vid.

-- Stelios L.A. Stavrinides: - I am not so rich to buy cheap tools, but... necessity is the mother of inventions !!!

View Vududude's profile


41 posts in 1992 days

#2 posted 07-04-2013 04:58 PM

what did you put your dial indicator on top of to get it to sit horizontal to the jig and how did you attach it to it? like in the video you posted he had to great a groove to get it to set horizontal. thanks for the video!

View ChuckM's profile


615 posts in 3867 days

#3 posted 07-04-2013 05:03 PM

Thanks for the comments. I added a picture to show how the indicator is mounted on the board.

-- The time I enjoy wasting is not time wasted

View Tony Strupulis's profile

Tony Strupulis

260 posts in 3324 days

#4 posted 07-05-2013 01:48 AM

Great alignment jig!

-- Tony -

View GarageWoodworks's profile


537 posts in 2357 days

#5 posted 07-05-2013 03:40 AM

Awesome! I love seeing other woodworkers use this technique.

-- Subscribe on YouTube:

View Woodknack's profile


12431 posts in 2581 days

#6 posted 07-05-2013 04:19 AM

I also built a jig after seeing the Garage Woodworks video and agree 100% that it is really fast and accurate. My jig is a little different and does the following: squares the miter gauge to the blade, checks the blade for 90d, checks the blade & fence for parallelism to the miter slot; not all at the same time of course, I just add a runner that attaches with one screw. Also, instead of using two screws I just use the edge of the jig.

-- Rick M,

View Jeff82780's profile


204 posts in 3195 days

#7 posted 07-05-2013 03:27 PM

cool jig. what is that holding up the dial indicator and where did u get it? pretty cool.

View ChuckM's profile


615 posts in 3867 days

#8 posted 07-05-2013 11:44 PM

Hi Jeff,

The dial indicator and the base came together from a dial indicator device and I removed them from the device.


Thanks, Brian, for sharing the great shop trick, to begin with.

-- The time I enjoy wasting is not time wasted

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