Ive been making all metal hotends for a few weeks now in stainless. Just made one in brass… Holy crap that was easy! Now to test.
Pics or it didn’t happen 
It’s so nice to go from stainless to brass. Stuff cuts like butter. But be wary about the twist drills. Brass is grabby.
what about the high temperatures? stainless rles because it does not conduct heat that easily. How does brass perform?