By Damien - 3/21/2020 5:39:48 PM
Hi,
I have a question regarding the use of Easy-Lease. I did a mould from a carbon fiber part using EG60 Gelcoat and the corresponding EG60 paste. As a release agent I used Easy-Lease. I applied 6-8 layers of Easy-Lease, and there was more than 1 h after the last layer. Then 2 layers of gelcoat, and finally the paste...
But then, impossible to release the part. It actually was completely stuck to the Gelcoat. I manage to get the part back using screw driver, hammer, sand paper...
I am trying to figure out why that is. I have used Easy-Lease in the past...no problem. The only thing I can see is that I have my Easy-Lease stock for more than 1 year, and it has in fact been open more than a year ago. I know its shelf-life is 1 year from production...I have ordered a new stock...but I am trying to figure out if just getting out of date would be a sufficient reason for this problem...just that I keep a better track of the dates of my release agent in the future. Or should this not be such an issue and I should look elsewhere to explain this problem ? But then, I really have no clue what could go wrong...
Thanks!
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By Hanaldo - 3/27/2020 7:50:08 PM
If you arent absolutely certain what the surface is (ie, you havent coated it yourself) then you should either be testing prior to moulding, or use PVA release agent to make your mould. There are more incompatible materials out there than compatible ones, so always assume it isnt going to be compatible unless you know for sure that it is.
Chemical release agents do expire, but they tend to last much much longer than their quoted shelf-life unless they are stored poorly. I've got a gallon of Frekote here that expired in 2009, it still works as well as the day I got it. Of course theres lots of variables that could effect that, and I'm not saying your Easylease hasn't expired - just that personally I dont have any issue using release agents well past their expiry.
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