How to make carbon fiber octogonal pipe


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Warren (Staff)
Warren (Staff)
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Aluminium moulds and bladders will likely be quite an expensive way of doing it.  Pre-preg is still a good option though but make the mould traditionally as a split mould, then basically follow the process as in this video:  Laminating and Vacuum Bagging a Carbon Fibre Tube Using a Split Mould

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant
Steve Broad
Steve Broad
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macbar - 6/19/2020 10:29:20 AM
Hi
I need to make 50 cm long carbon fiber octagonal pipe 50mm flat-flat with wall thickness of 2mm, outside surface quality is important. Im looking for ideas how to make it. Currently the best solution i came with is to do vertical vacuum infusion with heat formed pvc pipe as outside mold. If you have any ideas, guidance please share.

How many do you need to make?
An alternative method would be to use prepreg and a standard domestic oven that can accommodate a 60cm (allowing for space to manoeuvre). Expensive if making just the one. Split female mould CNC machined out of aluminium and polished to a mirror finish. A compressor will also be required to inflate the bladder that is used to compress the carbon as opposed to the traditional vacuum method.
I have made Hockey sticks using this method.

macbar
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Hi
I need to make 50 cm long carbon fiber octagonal pipe 50mm flat-flat with wall thickness of 2mm, outside surface quality is important. Im looking for ideas how to make it. Currently the best solution i came with is to do vertical vacuum infusion with heat formed pvc pipe as outside mold. If you have any ideas, guidance please share.
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