When I ran low on System 3 epoxy during my MC16.5 project I was in a big hurry to get more. In my haste I ordered MAS instead of System 3. The Mas worked fine, but now I am left with a little System 3 in the bottoms of the jugs (to little to pump without getting air bubbles) and half full MAS bottles. Can I combine the two brands into one epoxy bottle and one hardner bottle?
No. They use different chemistries.
If there's too little to pump, use measuring cups instead.
Laszlo
I’m with Lazslo. There was a period in 2004-2005 when they seemed to work, but the chemistries of the two competing brands have wandered off from each other. I wouldn’t risk it. Measuring cups will allow you to use up 90% of the remaining liquid gold.