Hi everyone.
I am in the middle of my first carbon project which is linked to here:
http://frankiepix.de/carbon-front-fender-701-supermoto/

The project is blogged in German, but I think that google can translate it very easy.
Though I am German, I would be very happy for every hint I can get.
Regards
Frank

Forget the Uni-Mold kit if your going to make it with pre peg and cure it in an oven as the max temp is 80c .

something went wrong...
can the mould be too good released?

Frank

Standard behaviour for wet resin in contact with a mould surface that has been treated with a chemical release agent. The chemical release agents lower the surface energy of the mould so much that the resin can't 'cling' to it, and so the resin tries to form a shape that has minimal surface contact: a sphere. 

You mean another try without EasyLease and Meguiars wax instead of it would help?
Frank

Well, perhaps. But I would suggest switching to a more advanced process, like resin infusion or pre-preg. Or at the very least, wet-lay vacuum bagging. You really need some sort of consolidation to hold things in place while the resin cures. Wet-lay vacuum bagging may be slightly cheaper, but it does also require a good amount of skill to get a good result. Resin infusion and pre-preg are much more forgiving, but more expensive processes.

After i failed with the first part, i would like to start a second try with resin infusion.
Here are some Pictures of the Mould: The mould is about 85 x 25 cm.
Picture 1  side view

It ist a four-part mould. The 4th part is a Polyurethane cast.
Picture 2  inside

Everything necessary for Mounting is inside the cast.
Picture 3 the PU-cast

I could fill the holes with a mixture of  chopped carbon fibre strands and resin and let it cure.
After this has cured, i could lay the layers of carbon and the additional layers to get the desired thickness, than the peel ply, perforated Release Film, infusion mesh and then the bag outside of the whole Mould.
Is that a way that may succeed?
Where should i infuse and where to connect the Vacuum?
Another Thing:
It is basically a U-profile with a kink inwards. If I interpret this with 2/2 twill fabric, wrinkles appear on the sidewalls, which I do not get draped away.
regards
Frank

The vacuum leakage drives me crazy...

I bagged the whole Mould. It took me over 4 hours and the bagging was still not properly sealed.
I gum-taped all nuts and bolts, every edge, I used 1/2 can spray adhesive all around the bag
and i tried a second bag over the first. Nothing helped. At the end I started the Infusion and the Part failed again.
Is there somewhere a bagging workshop? Am i that stupid?
Frank

My opinions:
-You really should have made the mounting section separately. This would have been one of the easiest projects you can think of.
-to get the cloth in wrinkle free (assuming one fibre direction is along the length of the part) start with the middle line, and then work your way outward in parallel lines, in soft strokes starting form the centre in both directions. You can either use 0° or 90° as your starting line.

You used spray adhesive during the bagging? To seal the bag? That's what the gum tape is for. to protect the bag from edges and screwheads most people use breather cloth. Ec has a video about an airbox, where they bag a 3 part mould. That's basically how it should be done.