@gserghiou the pleats in the bag help the bag to mould aorund the shape of the part. If the part is a particularly difficult shape you will need to have some give in the bag to ensure it can cover the area without stretching as the vacuum evacuates the air and causing problems with the component.
im completely new to this and id like to learn how to do. i make foam core skimboards in my garge and theyre all right, they get dents in them fairly easy. I was just wondering where i might find all this material to be able to do this technique. I'd like to make stronger boards, not trying to run a buisness or anything. thank you and bi the way, how does the resin dry if all the air to dry it was sucked out by the vacumm?
Thanks. Yes, this video starts at he point where we finished laying up the part. The resin we've used has a sufficient pot life (open time) to allow us to draw any excess throught the various layers. When cured the peel ply will allow us to remove everything and leave a nice surface should we need to bond to it.
ahhh i see, so the vacuum totally gets rid of any air bubbles?, its just i notice some laminators use rollers and some don't, so i've been questioning if vacuums are reliable enough to completely get rid of all the air, i was trying wet lay up a while ago but air bubbles were occuring everytime, you pros make it look so easy ha!, but just one more question, how much psi is your system pulling?, thanks
There are a number of variables when it comes to reducing air bubbles. Typically depends on type of resin (viscosity), temp and pot life. By vac bagging you should be able to remove 80-90% of bubbles, the rest being so small that they shouldn't be visible with the naked eye. Of course to get the best results you would need to use Pre-Preg with an autoclave, but this route is not normally affordable to most. The PSI is around -0.8 to -1bar for the purpose of our demo. Hope this helps.
Nice videos..can you help me find that breaching unit..
drankfromtoilet 1 week ago
@openclass1 ...very good. It is just a standard lab coat but in Darth Vader black!
johnburnify 1 year ago
can someone explain the purpose of making the plits in the bag ???
Thanks
gserghiou 1 year ago
@gserghiou the pleats in the bag help the bag to mould aorund the shape of the part. If the part is a particularly difficult shape you will need to have some give in the bag to ensure it can cover the area without stretching as the vacuum evacuates the air and causing problems with the component.
johnburnify 1 year ago
im completely new to this and id like to learn how to do. i make foam core skimboards in my garge and theyre all right, they get dents in them fairly easy. I was just wondering where i might find all this material to be able to do this technique. I'd like to make stronger boards, not trying to run a buisness or anything. thank you and bi the way, how does the resin dry if all the air to dry it was sucked out by the vacumm?
zdanz25 1 year ago
beautiful looking part! great job!, just wondering is the resin actually sucked through the peel ply, release film and then the breather fabric?
rallyboy88 2 years ago
Thanks. Yes, this video starts at he point where we finished laying up the part. The resin we've used has a sufficient pot life (open time) to allow us to draw any excess throught the various layers. When cured the peel ply will allow us to remove everything and leave a nice surface should we need to bond to it.
johnburnify 2 years ago
ahhh i see, so the vacuum totally gets rid of any air bubbles?, its just i notice some laminators use rollers and some don't, so i've been questioning if vacuums are reliable enough to completely get rid of all the air, i was trying wet lay up a while ago but air bubbles were occuring everytime, you pros make it look so easy ha!, but just one more question, how much psi is your system pulling?, thanks
rallyboy88 2 years ago
There are a number of variables when it comes to reducing air bubbles. Typically depends on type of resin (viscosity), temp and pot life. By vac bagging you should be able to remove 80-90% of bubbles, the rest being so small that they shouldn't be visible with the naked eye. Of course to get the best results you would need to use Pre-Preg with an autoclave, but this route is not normally affordable to most. The PSI is around -0.8 to -1bar for the purpose of our demo. Hope this helps.
johnburnify 2 years ago
@johnburnify okay, yes that helped alot! thanks alot for your help, have a good day sir great stuff!!
Josh
rallyboy88 2 years ago