How to actually grind angles 15°, 30° and 45°

How to actually grind angles 15°, 30° and 45°
In this video I'm going to demonstrate how to set up to grind 15° 30° and 45° on angled parallels
in this setup I will be using two different methods for the 45° and 30° I will be using a sign bar and angle plate
on the 15° I will be using a vice and assign bar because the angle is extremely small and would be very difficult to clamp using a sign plate
I will also demonstrate how to calculate 15° 30° and 45° setups using a 5 inch sine bar and Gage blocks

[@Halflife2036]

These videos are amazing for a young toolmaker

[@durkee8713]

Very straightforward, easy to understand. I struggle with shop math so appreciate you taking the time to make these videos.

[@shopandmath]

thank you very very much for the nice comment. It helps put fuel in the tank.
Wish you all the best
Ray

[@matthubbard8541]

Excellent explanation Ray, thanks.

[@shopandmath]

thank you for the nice comment and thank you for taking the time to comment. It was much appreciated.
Ray

[@stringmanipulator]

excellent video, very well explained thank you for sharing your knowledge 😁👍👍👍

[@shopandmath]

thank you for your nice comment and thank you for taking the time to comment. It is much appreciated. Your comments help put fuel in the tank.
Ray

[@wileecoyoti]

Thank you for doing these!

[@shopandmath]

thank you for the nice comment and thank you for taking the time to comment. It was much appreciated.
Ray

[@thigtsquare950]

The exact numbers came to my mind right away (sin45°=cos45° = 1/√2; cos30°=sin60°= √3/2). I had problems, however, guessing how to start with the gauge blocks. Thanks for the instructions. (sin30°=cos60°=1/2)

[@jimdean7335]

Thanks, very timely for me.

[@shopandmath]

thank you for your comment and thank you for taking time to comment. It is much appreciated.
Ray

[@martybadboy]

Excellent as usual! 👍

[@shopandmath]

thank you for your nice comments and thank you for taking the time to comment. It is much appreciated.
Ray

[@tilliesinabottle]

great video! very practical.

[@shopandmath]

thank you for your nice comment and thank you for taking the time to comment. It is much appreciated.
Ray

[@sto2779]

3:05 - excellent explanation on how to use a sine bar for arbitrary angles. I thought the last result was a "1" when it should be a "0", but realized you only wanted to draw a box. What happens when using a 1 inch sine bar?

[@Bianchi77]

Creative video,thanks :)

[@shopandmath]

thank you for the nice comment and thank you for taking the time to comment. It was much appreciated.
Ray

[@DawidKellerman]

Hmm id you did the math with metric it would be the same? You made sine bars really click for me

[@shopandmath]

yes, the angles are the same if they imperial or metric the only differences you be using metric gauge blocks instead of imperial gauge blocks

[@opieshomeshop]

*_The math went so far over my head it went past the space station._*

[@rok1475]

I am rather surprised that you don’t know that the blocks are held together by Van der Waals force.
Not by vacuum and definitely not by friction.
Friction is the force that one surface or object encounters when moving over another. When objects are not moving, friction between them does not exist.

[@philcook9967]

Wringing gauge blocks together has nothing to do with friction.

[@shopandmath]

it creates almost a vacuum because of the fine finish there’s no air in between the two blocks. It’s just easier saying friction.

[@philcook9967]

@@shopandmathFriction and vacuum have no correlation to each other. Gauge blocks will remain rung in a vacuum.