My Journey into a Hand Tool Wonderland. #3: Combination Square Rehab.

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Blog entry by Luke posted 02-16-2015 04:47 AM 1714 reads 0 times favorited 3 comments Add to Favorites Watch
« Part 2: So far my favorite hand tool. Part 3 of My Journey into a Hand Tool Wonderland. series Part 4: Electrolysis Rust Removal Science Project »

While sifting through a tool bin at an antique store near me, I came across a rust try square that looked like it could clean up nicely, so I took the $3 risk.

I sanded the rusted cast iron base with 220, and used electrolysis to remove the rust on the rule. The ruler has a bit of wear on the tips but the edges are dead square. The spirit level in the base is still in great condition. After sanding and scraping the gunk, I gave the base a new coat of gloss black paint.

The blade is a Mohawk with etched markings up to 1/64, the base has no markings so its hard to tell what make it is.

3 comments so far

View Lynn Bradford.'s profile

Lynn Bradford.

68 posts in 1280 days

#1 posted 02-16-2015 12:22 PM

Nice refurb! Is it square? I bought a 16” machinists square at HF, and when I checked it for square right out of the package, it wasn’t. I was able to get a small flat file in the blade slot and knock off some metal on a small pad in the slot, one on each end. It tuned right up!

-- Lynn Bradford | Indiana | A poor excuse is better than none.

View handsawgeek's profile


591 posts in 813 days

#2 posted 02-16-2015 04:13 PM

Nice save, indeed!

-- Ed

View Luke's profile


289 posts in 2105 days

#3 posted 02-17-2015 12:53 AM

Yeah it is square, at least over about 10” or so its on for about the width of a .5 pencil ink. The corners are a bit worn out so eventually I’ll have to replace the rule, but I love the heft.

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