How to calibrate your own torque wrenches at home

[Kevin Criswell]

Hey guys/gals, in this video I show you how to calibrate your own torque wrenches at home. The adapter I am using can be bought at Harbor Freight Tools for $30.00
http://www.harborfreight.com/digital-torue-adapter-68283.html
(In the video I say $70, but looks like the price has gone down a lot since I bought mine).

Hope you enjoy.

Topic

[Peter]

Sorry to dig up an old thread, but I have a question relevant/related to this thread. It’s a question about the torque adapter used in the video:

http://www.harborfreight.com/digital-torue-adapter-68283.html#pr-header-back-to-top-link

I’ve read on this thread that people have used this setup and adapter for calibrating 1/4 in click style wrenches. The product overview on the HF tool states that the torque range on this tool is from 29.5 to 147.6 ft. lbs. 30 ft/lbs isn’t even close to the max 200 in/lbs most cheap 1/4″ torque wrenches max out at.

For anyone who has used this tool for an in/lbs torque wrench: how accurate is the HF adapter for calibrating these style wrenches? If this one definitely won’t work in that low of a range, can anybody recommend a digital torque adapter that is made for use in that range? Thanks!

[Jon]

I just found out my old torque wrench was 20lbft out! So I thought I would dismantle it, lubricate it and then recalibrate it myself.
With a bit of thinking it is possible to do it accurately and for free, without special expensive tools.
I made this video to help others:

[Author]

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