Hi all,

I just beginning on my framebuilding journey and have what is likely a very stupid question. When I am about to but my tubes to size ready to mitre how do I know how far to cut - for instance is my top tube is to be 58cm center-to-center how do I know where to put my mitre? I know I could get a rough idea by munising the radius of my head tube and seat tube, but this does not seem very exact.

Suggestions welcome!

Cheers