Make a Sine Bar for perfect angles First Time Every Time!

If you need to mark out angles accurately, and to a greater degree of precison that you can get with a protractor, then you need a Sine Bar. Widely used in engineering 'shops, they have a place in our woody 'shops, too.
Learn how to make and use one with Steve Maskery.
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More at stevemaskery.com

[@bradgotschall3259]

I was the guy writing on the desk. 40 years later some trig has finally soaked through my skull. I’m gonna make my sine bar to up my woodworking game a bit. Great explanation and examples of use. With a bit of tweaking the miter gauge bar fit to slots and using the sine bar, even a basic tool should be very accurate. Cheers!

[@russellwaite5874]

And me. Totally lost me sometime after 6 minutes. 🙂 I went and watched one about a " Tick stick " instead.

[@MrPatdeeee]

Another "Extraordinaire DIY" to Steve Maskery! For, mathematics (especially Geometry and Trigonometry), I rely loved it. Comparing History and Geography, etc; was to me "To hell with those"! And "I will stick with me math. Amen!" But the truth is: I made a horrible mistake. That has bugged me for 70+ yrs of my 90 yrs, on this planet. But I still love math to the "nth" degrees. And to see you take a very difficult "fact absolute"; when it comes to angles (other than 90, 45, 30 and 60 degrees); and make it so simple; proves that you are truly a "Cut Above", kind Sir. Thank you Steve, for sharing your innate talents, with us. Love it! 😍 🤠

[@donpotbury2220]

This is an awesome use of a sine bar. And it works great on a table saw. I wonder how it might be used on a miter saw.\

[@ryanlemons7831]

Supreme sir!!

[@jonathanrand7767]

May I suggest adding this video to your Low-Tech playlist? And renaming that list to Low-Tech for High Accuracy?

[@vk2ktm]

This is the first time I've seen this trick - simple and brilliant. thank you

[@petec6690]

Never thought of using a sign bar. Thanks for the great idea.

[@simon-d-m]

Brill Steve, as ever! Was aware of them in engineering, but hadn't thought of applying them to woodwork, and you make it look so easy!

[@danielpadwick7882]

Love to Stuart.

[@danlopretto7222]

Thanks for sharing this technique!

[@brianmackenzie4162]

Superb Steve. Im off to make one.

[@jerrytrueblue]

Thanks Steve: Very clear as usual... Jerry in Ontario

[@liveoak4124]

Incredibly useful, thanks for the instruction and enlightenment

[@Aspiecrafts]

Excellent

[@felleywoods]

Great video Steve. Simple and practical. Thank you

[@paulhopkins1720]

WOW...thankyou! that solves some problems for me and I realy love the wedges in the table saw idea.

[@CoronaWolle]

Wholeheartedly amazing bit of kit. Well presented too, earning you a new subscriber

[@markkoons7488]

Useful and informative. Thank you.

[@nathanpena9462]

Excellent!

[@ERone43]

Very kool

[@BobBlarneystone]

That's a tool that machinists used for a very long time but that woodworkers have not made good use of. That said, it would make sense to make spacers for commonly used angles such as 30 and 45 degrees and for others that are often used, but for one-offs one could just use the vernier calipers, particularly if the sine bar was integrated as part of a sled..

[@agn855]

_"…and multiplying by ten is very easy!"_ (starts using imperial instead of metric. Priceless)

[@fixbertha]

Good video, good tool. BUT, if your caliper is digital or dial it isn't vernier. I don't use digital or dial calipers, I use vernier calipers. Verniers are more robust, less susceptible to incorrect readings. They are a bit fiddly if you're not used to them, but they are "trustworthy" every time. If they close at zero then they are calibrated correctly.

[@andreasbentz6106]

Good Morning Steve! Brilliant as always. Since I have no degree in engineering (biologist), I wasn't aware of this little gadget, but I will make one as soon as I have built another jig, which would also be helpful for you, to keep at least two hands when cutting this sine-bar parallel on the table saw: just by coincidence, a German woodworking channel yesterday uploaded a video on a jig, that helps cutting thin stripes of wood acurately. I think this might also help to keep the fingers much further away from the blade when cutting the back side of the sine bar parallel to the anvils. Here is a link to that video kzbin.info/www/bejne/m4fTf4eAo9CXq7s Jonas is a really cool guy (if you don't judge a book just by the cover 😉). Thanks again for the excellent video

[@SteveMaskery]

Hi Andreas, glad you liked the video. The problem when trimming the edgeis that, because there are only two points in contact with the fence, it is VERY easy for the workpiece to pivot. A standard feather board does not holp, because it applies pressure in front of the blade, rather than on the blade. It's a really tricky cut. But my blade guard completely covers the blade, riding on the workpiece itself. Even so, I have to concentrate. Thanks for the heads up on the video. I wish I spoke German, he sounds fun. Who has houseplants in his workshop?! And here is my very similar solution to the same problem. The quality is dire (it's from a previous life) and you can skip the first 45s (what was I thinking?!) but you'll get the picture. I still have that jig, I think perhaps I need to remake the film. Enjoy (if you can). kzbin.info/www/bejne/oqGXi4VrjNh_b9k