Graduating from a MK3S to a 5 Head XL kit
I just ordered my XL 5 Head and am now absorbing as much information as possible before its arrival. I have a few questions about assembly, however there is no "Add Topic" button when I enter the "Assembly and first prints troubleshooting" section of the forum.
My first question is how do I get posting privileges in the "Assembly and first prints troubleshooting" section?
I've assembled my own Lancair 320 aircraft so I know how important judicious use of various thread compounds is while assembling vibrating mechanical equipment. Most of the posts about thread compounds in the forum apply to the MK series of Prusa machines. Are there any guidelines, suggestions or folklore about Locktite 222,242 and anti seize compounds specifically for the XL? I did not use any Locktite while assembling my MK but do use anti seize on the nozzle.
RE: Graduating from a MK3S to a 5 Head XL kit
I'm glad to hear you're diving into the details before your XL 5 Head arrives! That's a great approach.
To get posting privileges in the "Assembly and first prints troubleshooting" section of the forum, you might need to reach out to the forum moderators or administrators directly. They can provide you with the necessary permissions.
Regarding thread compounds for the Prusa XL, while there isn't specific folklore for the XL series, general guidelines suggest using Locktite 222 (for stainless steel and other metals) and Locktite 242 (for non-permanent thread locking) to prevent loosening due to vibration. Anti-seize compounds are also useful for preventing corrosion and seizing, especially on the nozzle.
It's great that you're already using anti-seize on the nozzle! Just ensure you apply it sparingly to avoid any excess material interfering with the print quality.
there is no "Add Topic" button when I enter the "Assembly and first prints troubleshooting" section of the forum.
For some reason the forum software is currently a little flaky about keeping track of who is logged in ... if your username is not shown at the top try reloading the page and if that fails log in again.
When assembling, use the on-line manual and always check the user comments for each step - most potential pitfalls are highlghted there.
There is no need for any gripping compounds for the build although I did need to use a clearing tap on one of the case holes; no, not cutting the thread, just clearing.
One build fault we see from time to time is a failure to pull all the toolhead docks fully home - they must line up within a millimetre and the last half-turn of the screw does risk damaging the cheap allen keys provided 'though I suspect you have your own higher grade tools. You do need to stick with the Prusa provided keys for torque measurements.
Resist the temptation to replace the slightly soft screws with higher quality ones, I suspect Prusa selected them so that over enthusiastic assemblers couldn't damage expensive parts. They are perfectly adequate for the job.
Cheerio,