Hotend question

Zortrax M200 General Discussion
#1

I just lost another hotend while changing the nozzle.

Thread stripped with normal if not soft force.

BTW hotend was heated, as usual.

I really would like to ask if a brass block heater wouldn't have been better?

If aluminum is a choice for some thermal requirement why not put a threaded brass insert on the aluminum block where we could screw the nozzle? 

This aluminum thread is soft as butter.

#2

Or some anti-seize lubricant would maybe help... don't know why they can't/don't add some at the factory.

#3

I ordered a new nozzle and noticed it was quite hard to thread in. I had to keep backing it out and running it back in. Almost felt like it was cutting threads a little deeper in the aluminum block.

#4

I think aluminium it preferable to brass because you want to keep the mass as low as possible. More mass requires greater force to accelerate and decelerate.

#5

Less mass is good and all, but robustness is also needed. What about using Helicoils?