Post Enclosure Kit Resonance
VCore 3.1 500. Just added the Enclosure kit, but not the panels yet.
At the same time, I replaced the printed motor cages, idlers, and joiners with metal plates.
Now my resonance is weird and I've been chasing it all day. The extra weird ones are the Y. I do not know what is going on there.
I believe the second hump in the X is from the ductwork. Can't seem to tighten that away.
Pictures included are most recent comparison, most recent X, and several Y. The most recent Y is extra strange (with the double peaks at 7)
Where do I look to nail this down?
edit: maybe I'm binding? I don't recall how hard it should be to push when de powered
6 Replies
correct-apricot•16mo ago
I assume you tightened all the enclosure kit parts so there is no rattling without the panels?
narrow-beige•16mo ago
maybe strip your printhead of all possible rattling causes and then test again
I added strips of sticky back felt sheet (cut from printer paper sized sheets from a local crafts store) to all the extrusion surfaces where my panels touched. As well as quieting a lot of vibration noise, it helped seal in heat!
I am at work and didn't want to say "thanks, I'll try that in 10 to 12 hours" but,
• as far as I know there are no loose parts in the frame. I will check again because there are many bolts to count
• removing the duct during test is a good idea. I assume it's localized to that one hump, but that is not a tested assumption
• felt sheets is not a bad idea. I don't think that will be strictly necessary, but could be the final thing if there's low level noise that I can't remove
I also strongly suspect this may be at play. Much of the noise on Y is from other axes
https://discord.com/channels/582187371529764864/791048619997659176/1135547983035891722
xenial-black•16mo ago
I looks like resonance issues is very common for those who enclosed their printers. I have similar one, haven't found a solution. Just wishing you luck...
I've been waiting for a really good print to prove results, but I do think I solved the issue. Even if I haven't gotten the perfect resonance charts yet,
• At the time it wasnt loose parts. But that is a persistent risk. That's just how it goes,
• It wasnt a part on the carriage, the duct is just what sounds the loudest when there's an issue.
• Haven't added additional dampeners yet
But! In the motor mounts, there were bolts holding the pullies that weren't 90 degrees. That caused the belt to ride up a tiny bit when it was further back. I believe this was the prime cause of the issues.
To fix this, I replaced the bolts holding bearing stacks with longer ones and removed the printed part on the bottom of their mounts. Again, still not perfect. Still gotta do the finer tuning of resonance, but mzv is now the recommended shaper and a cube has been produced