Hi, 
I've having issues with bridging when trying to do a 5mm thick carbon/kevlar shell for a robot project of mine, im a machinist and have done fibreglass moulds for customers before but never a carbon fibre one, i think i rushed into machining the mould has i thought i would be able to wet lay carbon fibre sheet and resin like fiberglass, i've had 2 failed attempts trying to wet lay with struggling to get the fabric into all the contours with trying to get a quite thick wall thickness, i phoned easy and they said resin infusion is the way to go with using a tack spray to hold the fabric is place until the vacuum and resin is in, i purchased the kit and have tried the infusion but i think i haven't left enough flange around the base to have excess fabric pull its way down has i've had a better finish but still bridging/not taking the full shape, could this be the issue?, i can machine another mould with a 50mm flange around rather than the 25mm i have at the moment 



Thanks
Andy

What vacuum are you pulling? and if you are worried about the size of the flange you can always envelope bag it if the flange is too small. Do you have a picture of one of your infusions that went wrong? Might help in getting you the right answers.