Talk Composites - The Forum for Advanced Composites

Complex moulds, graphics, storage temperatures and serial moulds.

http://www.talkcomposites.com/Topic263.aspx

By Zekewarg - 1/26/2012 6:59:43 AM



Q1: How would I go about making spherical objects? Such as a helmet (for show), round lampshade etc?
Is there a way to make positive mould for that without getting creases and folds? (I think positive is laying the outer layer first, right?)

Q2: I want to add a graphic in the form of a sticker inside the outer layer of epoxy, both in wet lay and infusion, how would I go about this?
For infusion, could i mount the sticker directly to the first layer or would that interfere with the epoxy distribution?
For wet lay, I should be able to put the sticker face down into the first coat of epoxy in the mould right?

Q3: In what temperatures can I store the supplies? Cloth, releaseagents, epoxy and everything else?
Could I have it outside in the garage which can reach -15 C? I will of course heat everything before casting.

Q4: Would it be possible to use serial coupled moulds for infusion? For ex; a mould for a longboard with a hose from the opposite side of the epoxy container leading into the next mould? Would the pump be able to pull the epoxy all the way? Any other reasons it might not work?

You guys must be really tired of my questions by now. Sorry....
By Joe - 1/29/2012 4:41:15 PM

Zekewarg (26/01/2012)


Q1: Thanks! A split mould it is. But does the cloth have enough stretch and give to form a smooth "dome" without folds?


Cheers/ Zach
  2*2 twill leave will do the dome trick  http://www.youtube.com/watch?v=jfuaQK5YdeU Jump at 1:50 for dome making.  Hope it helped