If you have a hardened nozzle and brass brush, it shouldn't be too abrasive. I've usually done that with my MK3S+ and never had issues.
this post was submitted on 16 Sep 2023
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Thanks for the information. I do have a hardened nozzle, glad to hear that a brass brush won't abrade it over time.
I wouldn't worry, brass is usually way softer than most metals and if you do completely crazy on it there shouldn't be a problem.
Brass is also used for bearing, so it wears out before e.g. the steel axle in it does.
I'm not brave enough for the brush, I've considered trying out a toothbrush but my current process is just let the nozzle sit at temp for 15 minutes between prints and then wipe with a paper towel. I don't z home at full temp, I have different offsets for the temps I do pla and abs at
This is basically what I'm doing now, but I would prefer less hands on because I'm constantly getting pulled in some new direction after I start the preheat.
So far I've only printed ASA on my Voron. Why would you use different offsets? To vary the amount of first layer squish or something else?
To keep the squish consistent. I assumed it was because the nozzle is expanding more at higher temps but it could just expansion differences in the material or something else I guess. My start up script is homing at nozzle temp - 75c or something like that, most people with a brush just do the home at temp so there is no change. And yeah I forget about it sometimes too 😂
Sorry I just realized the way I described everything was actually pretty confusing. After every print I run a clean macro that moves the nozzle up front and heats to 230 and sits there. After about 10 minutes I wipe it then have a clean complete macro to cool down and move it back to the center. Then I start a print and the homing etc is all done at a lower temp, I can't remember if it's static or nozzle temp -75c or something