Any problems with mixing expoxy hardener?

Builder's Forum
1

I have year old half gallon of MAS hardener.  There is about 1/5th left in the container and I was wondering if there would be any issues mixing in a new quart to finish my boat, so that I don't waste any?

 

2

I do it all the time with System Three. In fact, I mix fast and slow to make medium speed.

Laszlo

 

3

   Thanks Laszlo!