Bad batch of resin/hardner from SP?

Printed From: the12volt.com
Forum Name: Fiberglass, Fabrication, and Interiors
Forum Discription: Fiberglass Kick Panels, Subwoofer Enclosures, Plexiglas, Fabrics, Materials, Finishes, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=75100
Printed Date: May 16, 2024 at 11:42 PM

Topic: Bad batch of resin/hardner from SP?

Posted By: meltingplastic
Subject: Bad batch of resin/hardner from SP?
Date Posted: March 25, 2006 at 8:34 PM

Hey guys,

so i'm undertaking a fiberglassing project for my S10 and ordered everything from Select Products. Everythings going great except for the resin and hardener. I've been using like double the amount of hadrener they have on the bottle for my batches and the thing takes FOREVER to cure. I mean it doesnt cure for OVER 24 hours. I mean i understand it takes a while for it all to cure but i'm mixing hot batches and they just dont seem to want to. I dont want to boil a batch so i've limitted it at 2 times the amount they recommend but i'm just confused as to why its taking so long to cure... ne suggestions as to what amount of hardener i should use per measurement of resin?

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Driving a Bagged, Caddied 02 s10

Replies:

Posted By: auex
Date Posted: March 25, 2006 at 8:38 PM

What is the temp like where you are?

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Certified Security Specialist
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Posted By: meltingplastic
Date Posted: March 25, 2006 at 8:49 PM

around 50 to 60 degrees. if the doors are closed 65

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Driving a Bagged, Caddied 02 s10

Posted By: toolinmaine
Date Posted: March 26, 2006 at 10:32 AM

Directsunlight or Heat Lamps. Magical

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ERIC ANDERSON-NOSREDNA CIRE

Posted By: Velocity Motors
Date Posted: March 26, 2006 at 12:13 PM

I'd say it's a bad batch. I had the same problem once and I returned it for a new batch of resin and it worked instantly and you can tell it was working because when mixed, the resin would turn brown with the hardener.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

Posted By: meltingplastic
Date Posted: March 26, 2006 at 4:33 PM

yea its not changing colors really when i add the hardener

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Driving a Bagged, Caddied 02 s10

Posted By: Aruman
Date Posted: March 27, 2006 at 9:36 AM

did you heat the resin making it warm before ? have you seen the dvd of them?

Posted By: xclusivecustoms
Date Posted: March 27, 2006 at 5:10 PM

You need to warm your shop to over 75 degrees to use fiberglass. If not, it could take a month for it to harden. Adding more than 2% MEKP to polyester resin is just asking for problems.

Posted By: Aruman
Date Posted: March 27, 2006 at 8:48 PM

yep no more then 2% of MEKP for 500mL of resin

Posted By: Velocity Motors
Date Posted: March 27, 2006 at 9:42 PM

I've fiberglassed at 60 deg F before without a problem. Just have to make sure that you give it a bit more time and that the project doesn't warp on you if you decide to bring the temp above 70 deg F.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

Posted By: Glowinlow22
Date Posted: April 06, 2006 at 2:12 AM

I've layed poly glass in temps as low as 50 degrees and its cured overnight without bumping up the hardner, i dont prefer to do it that way but fiberglass will cure in as cold as 50 degrees anything below that and its a crap shoot. the average temps here are around 60 lately and in 60 to 65 degrees my bondo brand cures in about 25 mins, you deffinatly have a bad batch.

I also really prefer using epiglass products but not everyone carries it and its not exactly the cheapest stuff to use. for smaller projects i've found that wal marts bondo brand of resin actually doesnt do to bad i've had it cure as low as 55 degrees as well but it was extremely slow in doing so, so i threw a small spot light on it and in 20 mins it was nice and solid. Work lights are a life saver just be careful because a light bulb will easily warm the glass up above the working temps of the resin/hardner your using.