Epoxy Resin....Grinding, amine blushing........

[83mulligan]

What's the protocol here for new layups over older layups both done with epoxy resin. I'm talking about glassing to something that was done a day or two ago, maybe a week.

Does it need to be scuffed up. Acetone of course. Not sure about soap and water for the amine blush. Not sure if i have blushing. Guess I'm just looking for the prep guidelines in general as it relates to epoxy over cured epoxy.

 

[chargerboy]

Re: Epoxy Resin....Grinding, amine blushing........

I like to rough up the surface of anything that I'm epoxying. It doesn't hurt to give it that extra mechanical bond, so I would rough it up a little bit and then clean with acetone. just my two cents.

 

[ryand895]

Re: Epoxy Resin....Grinding, amine blushing........

I like to rough up the surface of anything that I'm epoxying. It doesn't hurt to give it that extra mechanical bond, so I would rough it up a little bit and then clean with acetone. just my two cents.

I agree exactly. If you don't rough it up, don't expect the joint to last.

 

[Mark42]

Re: Epoxy Resin....Grinding, amine blushing........

Anime blush looks like vasaline was smeared on the epoxy. Feels sticky. It washes off easily with dish detergent and water and a soft scrub brush. Then do the sanding. You don't want to sand directly on anime blush, because the wax is just spread around and not entirely removed.

 

[83mulligan]

Re: Epoxy Resin....Grinding, amine blushing........

thanks guys.

 

[saildan]

Re: Epoxy Resin....Grinding, amine blushing........

What's the protocol here for new layups over older layups both done with epoxy resin. I'm talking about glassing to something that was done a day or two ago, maybe a week.

Does it need to be scuffed up. Acetone of course. Not sure about soap and water for the amine blush. Not sure if i have blushing. Guess I'm just looking for the prep guidelines in general as it relates to epoxy over cured epoxy.

These may help:

WEST Publication 002-550
Fiberglass Boat Repair & Maintenance


Click on Image


Avoiding Contamination
Cleaning Away Amine Blush



. . . more information
WEST Use Guides
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