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Fiberglass repair

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#1 alleyyooper OFFLINE  

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Posted May 07, 2015 - 01:38 PM

About to start the repair to the S16H and decided would renew my knowledge on fiber glass repair. A search on the net resulted in many many [pages of sights wanting to sell me a DVD on how to do it. Sheez Never thought I would see that.


:D   Al

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#2 Chopperhed OFFLINE  

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Posted May 07, 2015 - 03:04 PM

For every little job you do, there are thousands of people wanting to show you how. Whether or not they know how is suspect.

#3 Bolens 1000 OFFLINE  

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Posted May 07, 2015 - 03:09 PM

Fiberglass suggestions are almost like a debate on which motor oil is best! Many different brands , materials and techniques out there!

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#4 JDBrian OFFLINE  


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Posted May 07, 2015 - 03:54 PM

I've done some work with it and it's like magic to me how it will harden so fast into such a durable repair. I just follow the instructions on the products that I use and it seems to work for me. The key thing IME is to pick the right product for the job. 

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#5 UncleWillie OFFLINE  


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Posted May 07, 2015 - 04:49 PM

I am itching just readign this. One of the few things I am really allergic to. Yesterday I was standing in poison ivy wearing shorts. No rash.

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#6 drbish OFFLINE  



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Posted May 07, 2015 - 05:58 PM

I have been working on a video and an article on repairing a early Sears craftsman mower fiberglass body.It has sat outside for quite a while and has a piece broke out

 With me working for ten years in the fiberglass business mostly trimming ,I have repaired something that was trimmed wrong,fixed where the molders did not roll all the air out,and many other repairs

 With all that said ,it is hard to just tell some one how to repair fiberglass.

Hopefully my article will help

Edited by drbish, May 07, 2015 - 05:58 PM.

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Posted May 07, 2015 - 06:07 PM

Its easy, like JD Brian said read the instructions and have at it .
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#8 Traill95 OFFLINE  



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Posted May 07, 2015 - 06:11 PM

I just patched the front end on my gt16 sears,, put on resin lay down fiberglass put on more resin. came back in 2 days and sanded.    :smilewink:  :smilewink: 

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#9 Doxey OFFLINE  

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Posted May 07, 2015 - 06:51 PM

I've done a lot of fiberglass work over the years, all in hoppy work only. One thing I did learn is the finish fiberglass covering should be matt not the cloth. If you use cloth it will show through within 1 to 2 years. It happened to me on auto repair at least 2 times. I finally read how to do it right in a fiberglass book
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#10 Chopperhed OFFLINE  

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Posted May 07, 2015 - 07:46 PM



The only thing I can say is...


We are dealing with an epoxy substance bonding with a cloth substrate to create a good chemical/physical bond.


Expose as much of the original substrate to the new material as possible. (Feather as far back as you can)


Follow the manufacturers directions, and use the correct resins for the job ( epoxies are different than the polyesters)


Make sure the original surface is clean (use acetone), and rough it up well.


Note that fiberglass using polyester resins are not waterproof with out a gel coat. .

#11 dodge trucker ONLINE  

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Posted May 07, 2015 - 09:07 PM

make sure the mat is SATURATED  in resin, do not lay the cloth or mat on then just "paint the resin on" to the cloth. Air pockets are your worst enemy. If that cloth/mat isnt saturated it will peel off like a band aid.  Whether you use cloth or mat isn't why it would seperate, it's improoper adhesion to base material,

but using fiberglass to repair sheet metal like on a car, you can't stop rust once it starts so as that old metal rusts away more it will cause seperation.