fiberglass storage & what to do with gel`d resin...? - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans Advertise
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Body - Exterior
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 11-19-2006, 02:39 PM
Bumpstick's Avatar
Hammer and a torch
 
Join Date: May 2003
Location: Southeast TX
Age: 59
Posts: 1,254
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
fiberglass storage & what to do with gel`d resin...?

What is the best way to store fiberglass resin so it wont gel...?

Also once it does gel what can you do to thin it back to useable form...? I know you can use acetone for thinning to spray gelcoat but can it be used to thin reg resin for both use and futher storage...? Or something else...?

thanks...

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 11-19-2006, 03:03 PM
powerrodsmike's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Make a fiberglass fan shroud
Last journal entry: Next.. ..Bagging the king B (barge)
Join Date: Jan 2005
Location: gilroy, california
Age: 58
Posts: 4,097
Wiki Edits: 161

Thanks: 0
Thanked 3 Times in 3 Posts
Store it in a cool place.
You don't thin it to reactivate it.
Not with polyesters, anyway.

The crosslinking that occurs over time is the resin doing just what it was designed to do, only slower..It is the effect of the inhibitors becoming inactive. Which is what happens when you add catalyst. The catalyst binds with the inhibitors and allow the resin to start its crosslinking. That is my understanding of the chemical process.

Storing it in a refrigerator will extend the life somewhat, but don't freeze it.

Styrene is the solvent that "thins" the resin, but once the hardening starts, it can't be reversed. If you do use a resin that has begun to harden, you could have strength and rigidity issues with your laminate. Also, the clumps of resin that group together make it hard to do a proper lay up.

You can use acetone only in limited amounts, (no more than 10% TOPS)and only in applications that are not subject to stress.

If i have old resin that has begun to go off in the can, I add a bunch of hardener to it a set the whole thing off. Set it outside because the gases and heat, (flames sometimes ),that will eminate from the pot will be very unpleasant.

Put it in the fridge, you will get maybe 3 more months. seal it up tight tho, you don't want any water getting in it.


BTW, use styrene to thin gelcoat to a sprayable consistancy, it elimnates some of the hazyness and porosity that can occur when thinning with acetone. Better yet, use a pressure pot with a big fluid tip. Then you don't need to thin it hardly at all.
Gelcoat was never intended to be sprayed with a suction gun, or sprayed so it would flow out.

hope this helps,
mikey

I found a spiffy link that explains the reason for inhibitors and the catalyst reaction.
http://www.newton.dep.anl.gov/askasc...9/eng99263.htm
__________________
my signature lines...not really directed at anyone in particular..

BE different....ACT normal.

No one is completely useless..They can always be used as a bad example

Last edited by powerrodsmike; 11-20-2006 at 12:55 AM. Reason: add a link
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 12-15-2006, 03:20 PM
boatbob2
 
Join Date: Dec 2005
Location: north florida
Age: 81
Posts: 1,375
Wiki Edits: 0

Thanks: 6
Thanked 29 Times in 26 Posts
spraying gel coat........

hi,i have been repairing fiberglass boats,and spraying gel coats for almost 40 years. the thinner for gelcoat is styrene. i use a devilbiss 502 touch up gun for most repairs,a large repair will take a larger gun, catalyze the gel coat first then add the styrene, dont use too much. i usually do not mask off the areas im going to be spraying(unless its windy) i spray all repairs minimun of 3 coats make sure you clean the gun GOOD between coats,or throw the gun away if you have more money that brains. ,around the areas that have a crown,i spray the crown an extra 2 to 3 coats. last coat i add wax additive to the gel coat.(put paraffin wax in a glass bottle,add styrene,and set it in the sun) just use a few drops,the wax will cut off the air,allowing the gel coat to get hard. after i spray (between coats) i take a damp paper towel(with acetone) and wipe off the overspray) i dont want the tape line. too hard to sand out. im boatbob2
Reply With Quote Quick reply to this message

Recent Body - Exterior posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Insurance
Please select your insurance company (Optional)

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Water Soluable Fiberglass Resin? Arrowhead Body - Exterior 2 06-02-2006 12:17 PM
Gap problems fender to door when front fascia installed Ripped Body - Exterior 25 03-19-2006 07:15 PM
Fiberglass Cloth and resin Lucky01 Interior 8 12-04-2003 03:23 PM
Fiberglass Resin mmartin1872 Body - Exterior 2 11-13-2003 06:52 PM
how to work with fiberglass resin militarybudgetcustom Interior 1 08-20-2003 12:11 PM


All times are GMT -6. The time now is 10:41 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.