thepete89
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
there i noticed that T0 has multiple spikes between 10 and 40 Hz shaking frequency, above 40 you just get a single peak on the frequency you are shaking at, so i think maybe there's the reason why my graphs are so bad, but no idea what that could be. holding the umbilical or cables on the printhead or other stuff around the head doesn't seem to influence those peaks.
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
maybe some guidance on how to do rough tuning/belt tensioning with the realtime analysis tool would be great, as every shaper run takes some time, even if you only do it on x or y alone.
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
same. thought maybe my belt on T0 is rubbing/binding somewhere, but that's just when it's super loose - with more tension it runs okay again. no idea what to do. experimented again today, got it at one point where T1 had MZV with 1e3 and a good peak, but broad base, while T0 had two huge peaks, 2HUMP and also 1e3... guess i'll just do it really rough, do the rest of the calibration and then wait for a proper detailed guide on how to do belt tension and IS on idex machines. like this it's too much trial and error for my taste.
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
i don't think it's anything mechanical because i checked the idlers when i had the gantry out, they roll smooth. rails - maybe a bit rattling (could be that my lubricant i used is a bit too thick) but not binding or sounding "damaged" (but i must be honest, i never had a damaged rail, so i don't know how that would sound, but i'd imagine it would sound horrible - grinding noises and stuff. i don't have that). and frame-wise, the only thing i did at the very begining was adjust one side a bit with slight taps as my bed mesh showed me a high spot in one corner. that's it.
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
at least knowing that my belts are somewhat equally tensioned would be nice, a proper working IS is just the cherry on top. but like this it's throwing red hering after red hering towards me. i mean i even had the x-gantry out this week because i thought something was wrong. idler-assemblies not properly inserted to the extrusion or something like that. nothing. i pulled both x/dc-belts out to make sure they are both the same length. they are now. i de-racked the gantry a few times, both with belts out and belts in again. it's as square as can be now. i re-tightened all the bolts and screws i could easily acces.
i just can't wrap my head around why it won't go over 1e4, and most of the time with only one toolhead, or with completely different shaper algorithms on both toolheads IF they both manage 1e4 with veeeery low tension on all belts - that graph was with what, i believe a little bit over the first marking on that belt tensioning tool you can print? so very very loose, just tight enough that nothing slips off of idlers and pulleys. so from my feeling, too loose. then i went up again and here we are, 1e3 and 2HUMP_EI on both heads...
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
ok this printer is shitting me, now they both dropped down to 1e3 and 2HUMP_EI... aaand i'm starting over tomorrow :stare:
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
those are nice. would be so great to have a MRW-reseller here in europe, especially germany. it's not really viable to order anything from mandala because of freight costs, taxes, tariffs etc.. ordering stuff from the US is stupidly expensive right now.
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
i wonder if the realtime analysis could help with a rough tuning of the belts and then do the finetuning with IS
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
:kekw: so basically IDEX is trail & error all the way
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
i always interpreted it like that, the higher the number, the "clearer" the resonances are and the better it is for input shaping. if you can't get a clear signal - well then somethings busted in your mechanics.
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
yeah, thank you @Helge Keck @VisualTech48 - i just hope that there is no hidden mechanical defect. because after what you said i think all that power spectral density stuff for a normal corexy can go out the window too?
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
and basically slow and steady on all 4 belts whenever i change tension, and IS on Y is then just fine-tuning i guess. fun for weeks 😄 but if you both say that it is like this i hope it will eventually play out. tuning an idex is pretty wild.
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
yeah or tension in general. how low is too low, how much is too much.
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
and @Helge Keck @VisualTech48 what big of a margin for tension do i have, for a 300 machine? or is that hard to say?
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
but i fear that my X/DC belts are already a bit too short - when i first set everything up and tensioned the belts the front clamps slipped on both sides. had to fiddle a bit to get enough belt in there to grab onto it. i had already cut it down at this point, but oh well, if i busted my belts i'll order some more.
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
so guess my task for this week is redo my cable routing on both printheads and check the length of all belts...
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
well i took the shortest possible path... but yeah that... makes much more sense.
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
1158 replies
RRCRat Rig Community [Unofficial]
•Created by Anrot on 10/16/2024 in #fix-my-resonance
VC4 Idex Belts
and yeah that's what i did the whole time, i just have the problem that with T0 the beacon usb cable is in the way sometimes. cable-routing on the toolhead is a bit awkward.
1158 replies