How to calculate the cut length to make a rolled metal ring

A Lightboard demonstration video on how to determine the circumference cut length for a piece of metal to make a rolled ring with a given diameter.

[@bryancose3753]

THANK YOU SIR !!!
Amazing how many people on TH-cam try to explain this and either miss the mark or make it complicated. I am a fabricator and bend a lot of metal and had to make a sheet aluminum circle for the first time.

[@PANDAC90]

As someone who always struggled with maths, but is always tinkering and creating things out of metal, this was absolutely perfect! I own an old ring roller and could never quite work out the exact measurements, this was so helpful and easy to understand. Thank you so much for taking the time to make this video.

[@kingy002]

Cheers, pleased it was of help to you.

[@jamiemead6152]

I’m taking 1st year Dual ticket Welding/Metal Fabricating course. This video helped me so much! Thank you :)

[@kingy002]

Pleased to be of help to you Jamie. All the best with your course.

[@mustafakazi4145]

Thanks for the explanation

[@yazeed_0o0]

This is by far the best presentation way to teach someone on a board! Although I can't help but think about if the presenter or teacher has to draw the number inversed or is there a program that does it somehow?

[@kingy002]

It is shot through a mirror which reverses it for me.

[@yazeed_0o0]

@@kingy002 Ah I see! thanks for the reply.

[@faridmahomed3339]

Very helpful thanks

[@davedunn2124]

You lost me a little on the 1/2 1/2 1/2 1/2 thing. Watched it twice. But by following your math I gather what your saying. I would of guessed you would add MTx2 so this helped me out. Thanks

[@umarh467]

Mt full explain