Liquid Acra-glas is a 4:l ratio. However it is important that you be EXACT. The liquid stuff is picky. Acra-glas Gel is a 1:1 ratio. This product is not as particular on exactness. I have been using both products since 1981 with good results. When I didn't use the correct measure, the epoxy didn't always set up hard. I hate re-doing my own work....but I have and do when it is not right.

Dennis Earl Smith/Benefactor Life NRA, ACGG Professional member