Resin Question

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GL 2814

New Member
I resined a couple pieces yesterday (a back and chest piece). The back seems pretty good but the chest piece is still tacky to the touch this morning. I am guessing I did not use enough hardener is my mix. Is that the reason it is still tacky or do I just need to give it more cure time before I fiberglass the inside.
If it is in fact that I didn't use enough hardener, what can I do? Should I just apply another coat of resin over the top with more hardener in the mix?
Thanks for the help.
 

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terra1

Active Member
I resined a couple pieces yesterday (a back and chest piece). The back seems pretty good but the chest piece is still tacky to the touch this morning. I am guessing I did not use enough hardener is my mix. Is that the reason it is still tacky or do I just need to give it more cure time before I fiberglass the inside.
If it is in fact that I didn't use enough hardener, what can I do? Should I just apply another coat of resin over the top with more hardener in the mix?
Thanks for the help.

does it just feel really grippy to the touch? my pep build felt this way but after 2 days it was fine.

its now under many layers of Bondo and no longer smells of resin so i think it fully cured.

id suggest leaving it for another day and re-access .
 

milk_man

Active Member
I would at least wait a day before trying anything. Is it in a good temperature to cure? Usually whatever resin you're using will say on the can whats a good range of temperatures for it to dry and anything outside of that will take longer.
 

GL 2814

New Member
I wouldn't say grippy, just tacky in that it wants to stick a little but not like you get stuck to the piece.
It was 95 here yesterday and only dropped to mid 70s last night so temperature should be good, although it is a bit humid.
 

GL 2814

New Member
So the chest is still a little tacky this morning, seems better though. Gonna give it one more day and see. If it is still slightly tacky tomorrow can I bondo/rondo over it anyway, or should I wait till it is completely cured?
 

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Mostly Fantasy

Well-Known Member
RPF PREMIUM MEMBER
If it's Bondo (paste), not the polyester liquid used with fiberglas cloth, either too much or too little hardner will make it feel tacky. If it feels like it's getting there, I'd wait another day or so. Do you have anywhere you can put it -like a closed garage- that would have elevated temperatures? That'll help set it up.
 

GL 2814

New Member
Yes, it is in my garage and about 95 outside so even hotter in there. I just want to make sure if I do the Bondo over it even if it is still a bit tacky will that seal it alright? I know the fumes are bad from the resin so basicaly just making sure that the bondo/primer/paint will seal it just fine if I give it another day to cure.
Thanks for all the help all.
 

Finhead

Sr Member
Yes, it is in my garage and about 95 outside so even hotter in there. I just want to make sure if I do the Bondo over it even if it is still a bit tacky will that seal it alright? I know the fumes are bad from the resin so basicaly just making sure that the bondo/primer/paint will seal it just fine if I give it another day to cure.
Thanks for all the help all.

Give it a coat of primer, it will seal off form the air and dry it. Bondo brand polyester resin is an unwaxed resin, it is supposed to stay tacky to except another layer of glass. The gelcoat is what seals it off in normal applications.
 

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