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Cutting a circle in to a tube.

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Reaper:
Ok well the best way to do it is to use one of these http://www.rollcentre.co.uk/rollcentre/html/rollcage_additions.html
but at 150 quid it a lot of cash.
Most of the time I use an end mill in my lathe as it gives a great cut when building chopper frames but the next best thing is to use a a tube mitre programe which allows you to put in the diameter of each peice of tube, the wall thickness and the angle you can then print out a template that you cut out and wrap roung the tube, then you can mark out the cut line and use a grinder to shape it.
here is a link to a very simple Tubemiter programe http://www.ihpva.org/tools/tubemiter.exe
download the programe then open it click file then settings to enter the dimensions then file and print to print out your template.

hope this helps :D

rollazuki:
search the net for WINMITRE
Its a downloadable bit of software that you set your tube diameters and angles into, and it prints out a life size mask for you to mark out your steel with.
Then just break out the grinder and cut up to the mask and itll butt together just right.

Lee_D:
Cheers chaps. Just given a new lease of life to my not so very much used plasma cutter (why it never occured to me before I'll never know!) and spawned a whole range of project ideas  :(shades):

Lee

Reaper:
Ah where would I be without my Plasma Cutter :D
A truly great bit of kit!

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