tg73
RRCRat Rig Community [Unofficial]
•Created by 03Julian04 on 11/13/2024 in #fix-my-print
Holes in massive Infill but little overflow on top layer
Note that printing fast and hot will show little mercy for damp filament. If you get a lot of stringing etc, try drying (more).
340 replies
RRCRat Rig Community [Unofficial]
•Created by 03Julian04 on 11/13/2024 in #fix-my-print
Holes in massive Infill but little overflow on top layer
Also a traditional temp tower will be misleading because it has small layers and prints slow. I dialed in by watching fast solid infill (eg solid bottom layers except the first layer). At lower temps it looks matt or a bit scuffed. I increased temp until the glossy look appears.
340 replies
RRCRat Rig Community [Unofficial]
•Created by 03Julian04 on 11/13/2024 in #fix-my-print
Holes in massive Infill but little overflow on top layer
I think Prusa's own profile for the petg I mentioned has 230c, compared to my 255c on vc4. First layer temp was similar though, it's just for the other layers due to the huge speed difference.
340 replies
RRCRat Rig Community [Unofficial]
•Created by 03Julian04 on 11/13/2024 in #fix-my-print
Holes in massive Infill but little overflow on top layer
The 1st vs other layer temp difference is often needed due to the 1st layer printing a lot slower.
340 replies
RRCRat Rig Community [Unofficial]
•Created by 03Julian04 on 11/13/2024 in #fix-my-print
Holes in massive Infill but little overflow on top layer
Sounds good. It varies a lot even by different colours. I recently tuned up some old Prusa (not Prusament) transparent brown PETG. 85% flow/extrusion multiplier, 0.04525 PA, 230 first layer 255 the rest to suit Prusaslicer 0.2 QUALITY VC4 HYBRID profile. The flow and PA are very different to other PETG I have.
340 replies
RRCRat Rig Community [Unofficial]
•Created by 03Julian04 on 11/13/2024 in #fix-my-print
Holes in massive Infill but little overflow on top layer
Test again with different filament. Preferably something from a quality brand like prusament. Not the same brand and colour as you've been using in case it's from the same batch.
340 replies
RRCRat Rig Community [Unofficial]
•Created by 03Julian04 on 11/13/2024 in #fix-my-print
Holes in massive Infill but little overflow on top layer
Sounds like it might be heading in the right direction...
340 replies
RRCRat Rig Community [Unofficial]
•Created by Salut on 11/7/2024 in #fix-my-printer
VCore 4 does not print straight but wavy lines
As the man said, let's get PA sorted before looking at anything else. Are you using Jayo matt white PLA?
25 replies
RRCRat Rig Community [Unofficial]
•Created by Salut on 11/7/2024 in #fix-my-printer
VCore 4 does not print straight but wavy lines
But seriously, compare the printed numbers on the tests. A bit different. And worse on the second test. Really really wavy. I'm struggling to put that down to PA. What do you think Helge?
25 replies
RRCRat Rig Community [Unofficial]
•Created by Salut on 11/7/2024 in #fix-my-printer
VCore 4 does not print straight but wavy lines
Ok, I've worked it out. Your printer is celebrating Halloween by making everything look spooky - check out the numbers on the second PA test. Very spooky 😱
25 replies
RRCRat Rig Community [Unofficial]
•Created by Salut on 11/7/2024 in #fix-my-printer
VCore 4 does not print straight but wavy lines
25 replies
RRCRat Rig Community [Unofficial]
•Created by Salut on 11/7/2024 in #fix-my-printer
VCore 4 does not print straight but wavy lines
Can you:
1. do a cold pull. Make sure orbiter tension is sensible afterwards.
2. (re)calibrate pressure advance for this filament
2. do a larger 25% infill 2 layer test - say 300x300? It looks like the wiggle happens more nearer the edges, but this could be pure coincidence. A larger test will help clarify this.
Steps 1 & 2 help rule things out, even if they seem like a long shot.
25 replies
RRCRat Rig Community [Unofficial]
•Created by Salut on 11/7/2024 in #fix-my-printer
VCore 4 does not print straight but wavy lines
Was this one or two layers? https://cdn.discordapp.com/attachments/1304117516439654411/1304117517001953410/1.jpg?ex=672ee255&is=672d90d5&hm=20f7fca3757341cd4bbba175e426367124be627b3eeb5c40b35694bc48247a93&
25 replies
RRCRat Rig Community [Unofficial]
•Created by Salut on 11/7/2024 in #fix-my-printer
VCore 4 does not print straight but wavy lines
FYI, when you mention someone like @Salut you need to select the name from the list that pops up, not just type it, otherwise it doesn't generate a notification.
25 replies
RRCRat Rig Community [Unofficial]
•Created by Salty Saul🧂 on 11/2/2024 in #fix-my-print
VCore4 500 hybrid 2nd layer major over extrusion
Ok, I read now that you have extrusion multiplier >1. This seems very unlikely unless your filament is undersized. Also ensure that the orbiter tension is only as tight as it needs to be to pull filament against finger squeeze resistance grabbing the filament. Super high tension will cause problems. I also agree with @CrashTestCharlie / VC4 400h that your flow seems aggressively high,I would dial that back to 25 until you get the other issues sorted.
18 replies
RRCRat Rig Community [Unofficial]
•Created by Salty Saul🧂 on 11/2/2024 in #fix-my-print
VCore4 500 hybrid 2nd layer major over extrusion
1. What is your extrusion multiplier for this filament? Have you calibrated it for this filament? Iirc I have 92%. Relatively low figures are common with this setup.
2. Thermal/bimetallic gantry bowing can kick in during early layers - typically between about 15-30 minutes into the print if the gantry was not pre soaked. Are you heat soaking?
18 replies
RRCRat Rig Community [Unofficial]
•Created by tg73 on 10/8/2024 in #fix-my-print
Regular surface distortion pattern towards end of larger first layers VC4
Just a heads up that me and @mazas are continuing with investigations "off channel". Results soon.
1729 replies
RRCRat Rig Community [Unofficial]
•Created by tg73 on 10/8/2024 in #fix-my-print
Regular surface distortion pattern towards end of larger first layers VC4
Me and @mazas have been busy actively testing various configurations "off channel" and we'll post results here soon.
1729 replies
RRCRat Rig Community [Unofficial]
•Created by tg73 on 10/8/2024 in #fix-my-print
Regular surface distortion pattern towards end of larger first layers VC4
Flipping the fan around is what we mean by "reversed fan". You can't change the direction in which its motor spins.
Putting the fan behind the hotend would indeed need a major redesign of several parts of the toolhead. It would also be unlikely to work as both the inlet and outlet sides of the fan would have nearby obstructions which would very likely kill its performance.
1729 replies