• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

cling film and fibreglass

Agemax

Agemax

Forum Guru
i want to make a fibreglass replica of the front of my bellypan. it will be some kind of removable stone guard/accent piece that will fit over it.
i am thinking, could i cover the pan in cling film and then lay the fibreglass over that so it comes away easy when it has hardened or is there a better way, like some sort of release agent to spread over it before glassing?
cheers,
 
GREENSEAL...Its a brush on release agent used in die making processes...it will come off the part as well. Found this place with a quick Google search. The resins in the fiberglassing kit may eat plastic film, and unless its perfectly smooth the film will leave marks in it as well.

http://www.chemtrend.com/mold_release_agents
 
Last edited:
ok Chuck,thanks. i knew about proper release agent but i wondered if there may be a cheaper way,sommat lying around the house.......LARD maybe haha....
i will check out the local bodyshop supplier tomorrow
 
When glassing over the foam molds coated in masking tape, I give them several heavy coats of car wax to ease removal.

Of course, I don't care about the form's survival, so that may not work well enough here.
 
Been doing some fiberglass experiments for my digital fabrication class this semester. The whole class is centered around rapid prototyping specifically with CNC, Laser Cutter, and 3d printing. The class is a whole load of fun and I'm learning lots.

For one of the projects I was laying fiberglass over a fairly intricate CNC cut foam form. Tried several methods of protecting the foam from the resin, including using suran cling wrap. It did work very well at isolating the part from the fiberglass. Much better than packing tape, as the tape allowed some resin to seep though the edges of the tape. That could have been my fault based upon the form of the part though.

You will however have to be careful not to get air bubbles and minimize the creases in the cling wrap. It can be done, but it takes some time to get right. I recommend using painters tape or something to secure the cling to the part so it doesn't move around while your stippling the resin through the cloth.

There are tons or release agents available. Some are wax based, others are aerosols. I used Vaseline because I had it on hand from other casting projects. Worked like a treat. :rolleyes:
 
Any place that sells fiberglass supplies will sell stuff called mold release. It's sort of a wax and probably similiar to what Chuck has mentioned. The benefit with using something like that is your finished mold will required far less cleanup work due to bubbles or wrinkles and any small details will be preserved. It's cheap, designed for the job and will just plain work.
 
cling wrap will work fine, find the thickest one possible (check catering stores).
For a mold release, cooking spray works well for quick and dirty projects.
 
You must log in or register to reply here.
Back
Top