Does this sound like a good process?


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quinn
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I already posted about my carbon fiber helicopter boom, for that I decided I'll bite the bullet and do alloy molds. 
I also need a carbon fiber helicopter canopy. Similar shape to a football but a bit bigger and open at the back, I'll attach a pic of one. It will have pretty thin wall thickness, generally they are about a half mm, maybe .6 or .7. So only a couple layers of weave. 
I will be making my own design on fusion 360 and milling the plug on my cnc. The process that makes the most sense to me is milling each plug half (mold will be split down the middle lengthwise, right and left half) out of mdf or foam, spraying it with layers of duratec primer, sand and polish, then attach each plug half to a flat sheet of melamine or some other rigid plastic to create base for mold flanges and proceed to make fiberglass mold halves from that. I would prefer to skip the plug stage and go straight to milling the molds, but it just doesn't seem to work out as well as making fiberglass molds from a plug.  From the female molds I will vacuum bag a carbon fiber wet lay up. 
does this sound like a good plan or is there an easier/better way considering I have a cnc? Another variation would be attaching the 2 plug halves together to make a complete plug before applying duratec,  then split into 2 molds using the method shown in the air box video, but i feel that it will be less work to just attach the 2 halves to flat sheets for making the molds, just need to make sure both sheets are perfectly flat planes. 

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Hanaldo
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You can't hand laminate it, but you can reinfuse the part if you can remove the consumables without demoulding the part. If you manage it then you just replace the consumables and redo the infusion over the dry areas. But if the part pops out while you're pulling off the consumables then it won't work, as you'll get resin bleeding onto the surface of your part.

Did you warm up your resin at all?
Edited 7 Years Ago by Hanaldo
quinn
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Hanaldo - 8/20/2018 8:03:48 AM
You can't hand laminate it, but you can reinfuse the part if you can remove the consumables without demoulding the part. If you manage it then you just replace the consumables and redo the infusion over the dry areas. But if the part pops out while you're pulling off the consumables then it won't work, as you'll get resin bleeding onto the surface of your part.

Did you warm up your resin at all?

Yep, I did warm the resin a bit, but couldn't too much. I first tested a small batch and if heating anything above just barely warm, it would continue heating itself to smoking hot and set up within 10 minutes. Warmed it just slightly and got about 35 minute pot life.

GO

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