OldKingHamlet
RRCRat Rig Community [Unofficial]
•Created by Milkman3407 on 4/19/2025 in #fix-my-print
Over extrusion (maybe?)
Once your EM is dialed in, unload your filament, clean your nozzle so there's no extra filament anywhere, and do the Beacon calibration. Once that's done, slice and print this file. When printing, use the Z-Offset box in Mainsail to tick the toolhead up and down.
This looks way too close, so first, memorize your current offset. Then to move it away, click a positive value. I'd probably straight up +0.05 right off the bat.
While it's printing, move it slightly positive or negative until the first layer is evenly extruded, and doesn't have these edge ripples or gaps. Resist clicking Clear, as that'll move you to a 0.0 offset, not to what your offset was before fiddling with things.
When you get it right DO NOT CLICK SAVE. Use the console command SAVE_Z_OFFSET before print it done. For some reason, clicking save always makes things messy, but using SAVE_Z_OFFSET works well. It may very well be the same thing functionally, but it's happened enough that the Save button made things weird so it's a superstition with me.
5 replies
RRCRat Rig Community [Unofficial]
•Created by Milkman3407 on 4/19/2025 in #fix-my-print
Over extrusion (maybe?)
Extrusion and first layer are intertwined.
Tune your EM (and extruder or PA, if you haven't done so already)
https://ellis3dp.com/Print-Tuning-Guide/articles/extrusion_multiplier.html
In your instance, it will be really important to follow the guide to decouple the first two layer squish from the EM result.
5 replies
RRCRat Rig Community [Unofficial]
•Created by SteveBorough on 4/16/2025 in #fix-my-print
ASA overhangs
6 replies
RRCRat Rig Community [Unofficial]
•Created by SteveBorough on 4/16/2025 in #fix-my-print
ASA overhangs
What are your fan speeds?
6 replies
RRCRat Rig Community [Unofficial]
•Created by funtimeerror on 4/1/2025 in #fix-my-resonance
Swapped EVA -> RatRig toolhead and massive resonance spike
fwiw I found this nifty guide https://ratrig.dozuki.com/Guide/04.+Linear+Rail+Troubleshooting+guide/15
17 replies
RRCRat Rig Community [Unofficial]
•Created by funtimeerror on 4/1/2025 in #fix-my-resonance
Swapped EVA -> RatRig toolhead and massive resonance spike
Ah man, I didn't even think about those screws. Hrm, that's outside of my typical wheelhouse, so I'm really curious to see your results.
17 replies
RRCRat Rig Community [Unofficial]
•Created by funtimeerror on 4/1/2025 in #fix-my-resonance
Swapped EVA -> RatRig toolhead and massive resonance spike
Oof, is that screw on the heating element? I guess I know what I'll be doing over lunch tomorrow
I'm also tempted to check out the orbiter 2.5 upgrade, but I don't know if that'll change anything.
17 replies
RRCRat Rig Community [Unofficial]
•Created by funtimeerror on 4/1/2025 in #fix-my-resonance
Swapped EVA -> RatRig toolhead and massive resonance spike
I'm fighting some similar high frequency noise on my RR Toolhead 1.0 with orbiter 2. I'm also using a beacon as my accelerometer.
At this point I've replaced everything but the orbiter and the hotend. So maybe it's one of those?
17 replies
RRCRat Rig Community [Unofficial]
•Created by Seb_Juju on 4/2/2025 in #fix-my-resonance
impossible to adjust
Your peak frequencies look really, really, really high. How tight are your belts?
5 replies
RRCRat Rig Community [Unofficial]
•Created by OldKingHamlet on 3/11/2025 in #fix-my-resonance
Y axis funky, X axis perfect
5 replies
RRCRat Rig Community [Unofficial]
•Created by OldKingHamlet on 3/11/2025 in #fix-my-resonance
Y axis funky, X axis perfect
5 replies
RRCRat Rig Community [Unofficial]
•Created by OldKingHamlet on 2/19/2025 in #fix-my-printer
I am at an absolute loss. Scratching noise coming from rear motor motor/bearings, V-Core 3.1
5 replies
RRCRat Rig Community [Unofficial]
•Created by OldKingHamlet on 2/19/2025 in #fix-my-printer
I am at an absolute loss. Scratching noise coming from rear motor motor/bearings, V-Core 3.1
Yep, steppers were disconnected before this. Efficient motors can make unintentionally efficient generators 😬
Yeah, I'm thinking that's what I must have done RE belt tension. The noise seemed to start coincidentally when fixing the frame square (printer got bonked by stuff being moved next to it). Printer seemed to be running fine before I adjusted the corners a bit, so I was thinking I somehow damaged a bearing, but nothing I've done so far has fixed it. So I'll have to assume that I ran the belts too tight.
I actually just stumbled across a spare motor I must have bought a while back, so I'll try an in situ swap out and see if that improves things.
5 replies
RRCRat Rig Community [Unofficial]
•Created by WrinklySackNick on 12/23/2024 in #fix-my-resonance
Y accel wont go above 2000 - vcore 3.1 with toolhead
Are you running the new input shaper routine where the head travels an inch or so in an oscillating pattern, on just x or y, when running input shaping?
I have a 3.1/Toolhead1/custom beacon mount,and I'm seeing a similar peakiness and noise starting at 100hz and up, which wasn't shown before the new os routines.
The old input shaping routing gave me 8.5k accel on y with belt tension tuned in. Now I'm seeing a similar oddity and sub 3k accel recommendation on y.
Just to be sure I'm going to rebuild the x/y motion system and see if the problem persists.
Noise bursts around 100hz are usually attributed to loose parts on the Toolhead, but I also once had a mis-tightened t nut on one of the y rails generate some harmonic buzz around the 130hz range.
11 replies
RRCRat Rig Community [Unofficial]
•Created by DikkieKlijn on 10/14/2024 in #fix-my-resonance
Custom VC3 input shaping interpretation
JFC, a y accel of 13.6k on a 400? With 0% vibration and .05sm on mzv. I'd say you're done. I have 9k on a 300 and that's pretty good.
I wouldn't touch anything but give weekly belt tension checks while the belt breaks in.
I'd also test against heat soaked conditions, just to be sure.
3 replies
RRCRat Rig Community [Unofficial]
•Created by dickpoop on 11/9/2024 in #fix-my-resonance
V4 500 Hybrid second Y resonance peak?
For me, with a toolhead 1.0 on a V-Core 3.1 (so kinda similar to yours), I didn't have the Toolhead properly tightened across all of its bolts (specifically the countersunk ones that went through the plate to the printed parts), and my belts were a little loose.
3 replies
RRCRat Rig Community [Unofficial]
•Created by OldKingHamlet on 9/6/2024 in #fix-my-resonance
"Oh, my V-Core 3.1 is working almost perfectly. I'll make it even better" then this
Ah, probably. I was inspecting it, and I think my right rear assembly has some twist or other inflection in it. Best thing to do at this point might be to take the whole corner completely down and rebuild it.
6 replies
RRCRat Rig Community [Unofficial]
•Created by OldKingHamlet on 8/8/2024 in #fix-my-mesh
Beacon scan exposed waves in sheet/plate
It was the cheap sheet. I got a Rat Rig branded one from them, and the ripples are completely gone. Also, the waves would inverse if I turned the sheet over, or rotate with the sheet if I rotated it on the bed.
8 replies
RRCRat Rig Community [Unofficial]
•Created by MFBS on 8/27/2024 in #fix-my-resonance
No matter what I do I can not get rid of the third hump
So, I fixed mine. The rail carriages that were on my vc3, particularly the x rail, were failing. I replaced the rails with some new ones that had some preload on the carriages. I'm assuming the prior owner of mine had a few crashes and/or other z-axis sins. I just replaced the rails and carriages in one go, and now my resonances are clean af
*Edit: Mostly. I decided to "fix" some other things and now my lower belt is binding due to some path alignment issues. But at least the gigantic wall of resonance noise is gone.
75 replies
RRCRat Rig Community [Unofficial]
•Created by MFBS on 8/27/2024 in #fix-my-resonance
No matter what I do I can not get rid of the third hump
This... is almost the exact issue I'm troubleshooting through. Went from perfect/clean two humps to chaos. Granted, I had the frame get strongly hit during a workplace shuffle, replaced the toolhead with the RRTH, and installed a light weight gantry, so there were a lot of changes. I'm actually thinking the rails that were on this printer (I bought this RR used, and it was originally an early V-Core 3) had given up the ghost, so I've got a set of new y and x rails on the way.
I had spotted gantry twists being reported in the beacon calibrate process, but only along the back (0.05mm), which incidentally aligns with the umbilical's spring wire pushing the head to rotate forward/over the gantry, and towards the plate. I'm also getting a weird metallic buzz during belt tension testing that comes from the toolhead, but is completely unexplained by extruder gears, loose pieces, or anything else that could rattle. I'm now actually thinking the bearings in the x carriage, and since there's some other evidence of a strong gantry collision at one point. If the cowling for the bearings that keep them in place was damaged, that could explain it some of it, especially now that the much lighter RRTH is installed.
75 replies