i am wondering if it is necessary to use west system 207 clear hardener on both the inside and outside of my guillemot?

their is a considerable difference iin price between the 207(clear) and the 206 hardeners , you get slightly more with 207 due to 3:1 mix ratio

is it worth it to use 207 on the out and 206 on the in?

any advise appreciated

craig, ont can