Quote Originally Posted by Nick L View Post
Today I port matched the Fusions block inlet/outlet to the barbs i.d. Got copper shavings in the process. The block itself is copper "not" aluminum.
Wow! That's impressive that they would use copper. It looks like I was wrong, must have been the grit of sandpaper they use that threw me off. Probably used something real low like 20-40 grit to get that finish.