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# Monday, December 01, 2008
A Stinky Solution for Soiled Saws

While pegging the joints in a Shaker stepback I built for the February 2009 issue of Popular Woodworking (which mails to subscribers at the end of December), I used a $100 flush-cut saw. It’s a darn nice saw. Unless one clogs the teeth with glue.

Now, I didn’t intend to make it look as if I were trying to cover up my crime. I meant to ask Editor Christopher Schwarz how best to clean the yellow glue out of its tiny little teeth. But he was out that day, I got distracted with other stuff, and the saw ended up back in the rack, gunk and all.

About two weeks later, it was summarily brought to my attention that this pricey saw was now unusable. But Chris suggested a solution (short of buying a new saw), and it worked. I poured white vinegar into a shallow Pyrex pan and soaked the gunked-up teeth for a half-hour or so, then I went to work with an old toothbrush. It took some serious scrubbing, but the vinegar softened the dried glue enough to allow me to scrub it out, tooth by tooth. To speed up the process, you could heat the vinegar in a microwave, but that would increase the aroma. (After a visit from our human resources department during the last time we sprayed a finish, well, we try to avoid stinky things as much as possible.) 

After the teeth were cleaned, I rinsed the vinegar away and wiped the blade with jojoba oil. The blade lost some of its shiny luster, but the teeth cut, and that's $100 I can spend on shoes. Or on a couple new Hock plane blades.

— Megan Fitzpatrick, managing editor


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Monday, December 01, 2008 1:04:19 PM (Eastern Standard Time, UTC-05:00)  #  Comments [6] 
Monday, December 01, 2008 2:17:30 PM (Eastern Standard Time, UTC-05:00)
Funny! But glad it worked to restore that little saw. Antoher trick in the bag, for sure.
Monday, December 01, 2008 2:56:24 PM (Eastern Standard Time, UTC-05:00)
As a control, you should try the same experiment using just water instead of vinegar. Does soaking the clogged up teeth in water work as well as vinegar? If so, it's probably the water in the vinegar doing the work. Water is less stinky than vinegar, and easier to heat, as well.

Of course, you might want to try the experiment with a pair of saws that don't cost $100.
Blaise Pascal
Monday, December 01, 2008 3:17:44 PM (Eastern Standard Time, UTC-05:00)
Chris says he's tried both, and vinegar softens the glue more effectively. Plus, soaking a blade in water for a half hour scares me. I'm afraid I'd then be pulling out the steel wool, too!
Megan
megan
Wednesday, December 03, 2008 8:06:53 AM (Eastern Standard Time, UTC-05:00)
I have always used spray oven cleaner on all my saw blades to remove pitch and resin. It works for me.
Don B.
Wednesday, December 03, 2008 10:29:13 AM (Eastern Standard Time, UTC-05:00)
Megan,

The saw is more likely to corrode in vinegar, than in plain water.

There is stuff to remove yellow/PVA glue, which is basically vinegar thikened with something. You could use that, as well.
Alexander Grrigoriev
Thursday, December 04, 2008 1:05:34 AM (Eastern Standard Time, UTC-05:00)
A product called Contractor's De-Solv-It is another safe and effective cleaner for saw blades and router bits.

And it has the aroma of fresh oranges...ahhhhh!

This is not your garden variety orange oil base cleaner, but a real aggressive multi-use product that will tale roofing tar off of tools with virtual no soaking - just spray, wait a couple of minutes and wipe.

Full strength it will soften latex wall paint and take it right off the wall. But it is a shop and environment friendly product.

To remove blade or cutter pitch takes a soaking and sometimes a little brass brush scrubbing - but I'll trade a little time for harsh chemicals.

When your done it rinses off of the tools easily and you can rust proof as you like.

Did I mention it works on carpenter's glue?
Bruce Evans
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