Hello
perhaps anyone ever have similar problems as shown in the picture below?
thanks in advance
[URL=http://img532.imageshack.us/i/p240
There is a thread below of someone who was having problems with white dots. Is that your issue as well?
hi. well i think i get rid of it but still a problem… i take a photo today.any idea?
whats your process?
wet hand lay up in open mold
are you spraying a clear gelcoat in mold? If so you may be laying it on too heavy too quick, the styrene needs to gas off. try spraying light/medium coats, wait a minute or two to gas off and spray again.
no i dont use gel coat only epoxy…
i Spread little resin into a mold and then put the carbon fibre in to mold and soaked it with epoxy and than with finger squeezes the air out.then i wait for epoxy to thicken and than continue.
looks like air bubbles to me, have you always had this problem or is it just recently?
it look like tiny bubbles trapped between surfice coat and carbon fiber…but not like pinhooles or some big air bubbles…
i never have these problem they started recently
These are bubbles. When you make a part with no vacuum most of the time you have this kind of problems. So what you must do? When you mix together the epoxy and the catalyst in your cup, you must wait for a while to leave all the bubbles to go up. Then when the bubbles leave then slowly make the layups.
yes these are tiny bubbles, make sure your bag is totally sealed
Yes i know … i mix it slowly wait a few minutes and than make lay ups. the problem is that i was working that way for a while no problem at all, but a month ago this problem starts. Maybe i have a humide problem? i mesure it and it is 55%…is that normal or is it to high?and could it be that carbon fiber is soaked with humide?
some else…if i make a vacuum container so the modl could be inserted and put lets sey a fresh laminated piece, and apply vacum would it be any better?any opinion?
I apologize for the comprehensive questions:)
Putting your part in a vacuum chamber will not be worth it. You can put the RESIN in one to degas it, it might help. The only good way is to infuse, or at least use vacuum bagging. If you try to vacuum the whole part, air will trap between layers, and form into larger bubbles.