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Hi, issue taking from mould
Hi, issue taking from mould
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Hi, issue taking from mould
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Andy
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Andy
posted 7 Years Ago
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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
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Hi, issue taking from mould
K3
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7 Years Ago
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...
drippy
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7 Years Ago
If you haven't got the fabric into the grooves before applying vacuum, the fabric won't be pulled into them when vacuum is applied. The vacuum will squeeze the carbon on to the high points, preventin...
Steve Broad
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7 Years Ago
I don't think pre-preg is necessary here, in-fact it would be a bit trickier than infusion would be for a beginner - all those grooves and deep recesses are very likely to catch one out. Not to...
Hanaldo
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7 Years Ago
OOA Aramid/Carbon mix :-) Rarely use the wet stuff these days, so messy and time constrained unless using infusion (which is a bit of a faff IMO) There are even prepregs that don't need to be kep...
Steve Broad
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7 Years Ago
Dont get me wrong, I'm all for pre-preg! I use it for most applications. I just dont think it's necessary for this job, and isn't really any more suitable than infusion is. Hes already bought the...
Hanaldo
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7 Years Ago
I don't :-) and as he has the stuff he may as well use it. I had planned to use infusion for my car's roof and front clip and bought all the hardware and consumables (still have them :-( ), but then....
Steve Broad
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7 Years Ago
Thank you for the answers and suggestions I will have another go taking extra care and see how it turns out, will post a few pictures if theirs anymore issues
K3
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7 Years Ago
Post photos of the finished item please, good or bad :-)
Steve Broad
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7 Years Ago
+ x [quote] [b] Steve Broad - 8/6/2018 6:24:57 PM [/b] + x [quote] [b]...
Furrari
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7 Years Ago
Andy. I’m not an expert in this area as all my work has been on flatter stuff, so this is just a thought.You don’t say if the face of the mould is going to be the face of the component, but you coul...
Furrari
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7 Years Ago
Still really interested is seeing your finished pics when you get them done.
drippy
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7 Years Ago
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