how is it that you are making your molds? how are you getting that large flange around the part?
Looks good, but wonder if you are using vacuum or hand lay up process? Not sure if you are going to get good seal round the edges if you are using vac?
curious , why? what do you see?
I would have thought vac bag sealing would be easier if you had a flat flange of at least 25-30mm wide, around the edges of any moulds?
Oh, I see, because it gets a bit close around the corners…
Thats it…would imagine getting a good seal might be quite difficult. There again no problem if the moulds are intended for hand lay up process.
yamaha r1 parts… nice.
hand layup, VIP is too costly for right now…there is no way i can make more money doing VIP vs handlayup…
unfortunately i cant tell you how i got the large flange, i don’t like to help others if it threatens my business…i use the method on every mold i make and its the idea i got from fastrr…works perfect everytime 
When you say hand lay-up, do you mean PER contact moulding (no vacuum or press) or do you mean vacuum bagged epoxy?
who uses PER for carbon fiber parts? kinda defeats the purpose of even making carbon fiber parts doesnt it??
i use epoxy in a hand layup with vacuum
but i do use PER contact for making molds…thats it
Put the part/plug/pattern whatever on a peice of glass, fill in the gaps with a soft oil based clay. If you take more time filleting the clay it would make for easier production.
Will be nice to see how the lower tank cover comes out in CF… good luck.