OKay, so I FINALYL finished up glassing the back side of my mold and now I'm stuck. or rather the mold is. I know it's not supposed to be easy and all, but this thing is rediculously wedged. I used blue painter's tape, and it's sti in there good. Possibly part of my problem may be that I've got MDF top and bottom giving it a solid backbon that doesn't want to slowly release. I'll likely eventually either get it to eventually pop or break it with the various methods of prying i've been going thrugh. Anyone got anytricks?
Fiberglass: popping molds... HELP!
- Thread starter Poseur
- Start date
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- 02 1500 4x4, mp3
i dont have any info that can help, but it be nice if you could make a walkthrough on making a basic mold. i wanna learn but i have no idea where to start. in any case, good luck in getting info that you need.
Prettymuch yea. I figured the painter's tape would be enough to do the trick... I've seen a couple write-ups where they did without and mentione dit being difficult, but in the end it still worked.... For future ref, though what sorts of release agents are good to use? I've heared WD40 or vaseline, etc. but I'd imagine there's somethign more specific, yes?
I also would imagine working with a release agent would make it trickier to get the first layer of glass down, yes? seems to be a delicate balance. ideally something with a stick-unstick switch would be nice *L*
I also would imagine working with a release agent would make it trickier to get the first layer of glass down, yes? seems to be a delicate balance. ideally something with a stick-unstick switch would be nice *L*
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Nahhh..I know that WD will work but I know not how well.I am just getting into doing molds myself so I am still learning.This is why I hope Dex chimes in with a little more info.All of my glass is hand laid and without a mold.Poseur said:
Matt
AFaceInTheCrowd
Member
- :
- 2010 Subaru Legacy GT
use freakin cooking spray. that's what i use. works wonders. or petrolium jelly. that works well too.
There are various mold release waxes out there to aid in the removal of cured fiberglass from mold surfaces.
http://www.tapplastics.com/shop/product.php?pid=68&
http://www.tapplastics.com/shop/product.php?pid=72&
http://www.fibreglast.com/showproducts-category-Mold+Releases-23.html
PVA is a liquid that is sprayed on molds to further aid in seperation. It must be sprayed, and not brushed. PVA isn't required to seperate molds from finished parts, but some people prefer to just skip the PVA, as it will leave an orange peel type surface on the finished part when pulled from the mold. This is unavoidable due to the nature of the PVA. That doesn't mean you can't just sand the finished part though.
http://www.tapplastics.com/shop/product.php?pid=68&
http://www.tapplastics.com/shop/product.php?pid=72&
http://www.fibreglast.com/showproducts-category-Mold+Releases-23.html
PVA is a liquid that is sprayed on molds to further aid in seperation. It must be sprayed, and not brushed. PVA isn't required to seperate molds from finished parts, but some people prefer to just skip the PVA, as it will leave an orange peel type surface on the finished part when pulled from the mold. This is unavoidable due to the nature of the PVA. That doesn't mean you can't just sand the finished part though.
AFaceInTheCrowd
Member
- :
- 2010 Subaru Legacy GT
use pam. it's quick it's easy and it works.
hmm.... ohwell. ANYWAY... guess I know how to do it better int he future.. for the time being. I sure hope I can get this b**** out... THink I might jsut wedge some wood scraps in between for now and let it sit and think about wether it wants me to get violent or not...
Ah Ha!!!
so y'see what a couple pool cues, some paint stirrer sticks, and a little bit of getting pissed off can do? (headbang) Wow, I finally feel like I've accomplished something... Thanks for the advice kids. it actually managed to come out without toomuch of a struggle once I left some wedges under it for a bit (that painter's tape really isn't allthat sticky... Who cares what the back of my mold looks like, it's gonmna be against my car anyway. Highly doubt I'll be pulling my sub to pull the bolt to show it off anytime soon.
Anyway, thanks for the advice (even if it is in the form of "hey you're dumb" we cna all use that on occasion and I'll know better next time)
so y'see what a couple pool cues, some paint stirrer sticks, and a little bit of getting pissed off can do? (headbang) Wow, I finally feel like I've accomplished something... Thanks for the advice kids. it actually managed to come out without toomuch of a struggle once I left some wedges under it for a bit (that painter's tape really isn't allthat sticky... Who cares what the back of my mold looks like, it's gonmna be against my car anyway. Highly doubt I'll be pulling my sub to pull the bolt to show it off anytime soon.
Anyway, thanks for the advice (even if it is in the form of "hey you're dumb" we cna all use that on occasion and I'll know better next time)
