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 From:  Michael Gibson 3 Jul 2012  (18 of 20) 
5233.18 In reply to 5233.16 
Hi Pilou - no a projection of a line onto a cylinder is a different shape than a helix.

- Michael
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 From:  Tony77 3 Jul 2012  (19 of 20) 
5233.19 In reply to 5233.18 
Ok thanks for the help michael
:)
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 From:  Frenchy Pilou (PILOU) 3 Jul 2012  (20 of 20) 
5233.20 
Another solution :)
Draw internal Helix
draw external Helix
Loft straight
Boolean diff
:)
---
Pilou
Is beautiful that please without concept!
My Gallery
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