CTC Bizer with 0.8mm Nozzle: Difference between revisions
Jump to navigation
Jump to search
Line 13: | Line 13: | ||
* Triple-checked that extruder is working and the wires are not (again…) broken | * Triple-checked that extruder is working and the wires are not (again…) broken | ||
* After some googling I found [https://projects.ttlexceeded.com/index.html Bob's Project Notebook (Mupped Labs)] - which lead me into the right direction…[[#The Solution]] | * After some googling I found [https://projects.ttlexceeded.com/index.html Bob's Project Notebook (Mupped Labs)] - which lead me into the right direction…[[#The Solution]] | ||
* …read on! The pictures will nicely illustrate what I've changed and what effect it haD: | |||
[[File:Bizer08Nozzle00001.jpeg|thumb|none|666px|alt=|• gaps in walls<br>• infill…barely "infill"…<br>(• first layer height too low)]] | [[File:Bizer08Nozzle00001.jpeg|thumb|none|666px|alt=|• gaps in walls<br>• infill…barely "infill"…<br>(• first layer height too low)]] | ||
[[File:Bizer08Nozzle00002.jpeg|thumb|none|666px|alt=|• looked like underextrusion, so extrusion multiplier increased → ''no effect!'']] | [[File:Bizer08Nozzle00002.jpeg|thumb|none|666px|alt=|• looked like underextrusion, so extrusion multiplier increased → ''no effect!'']] | ||
[[File:Bizer08Nozzle00003.jpeg|thumb|none|666px|alt=|• still looked like underextrusion, so extrusion multiplier increased even more (the more, the better, right?) → ''still no effect! That was weird! Is the extruder-troughput somehow limited?'']] | [[File:Bizer08Nozzle00003.jpeg|thumb|none|666px|alt=|• still looked like underextrusion, so extrusion multiplier increased even more (the more, the better, right?) → ''still no effect! That was weird! Is the extruder-troughput somehow limited?'']] | ||
[[File:Bizer08Nozzle00004.jpeg|thumb|none|666px|alt=|• this was the moment, I remembered that there was a limitation, the ''volumetric rate'', which I had read some weaks ago on[https://projects.ttlexceeded.com/index.html Bob's Project Notebook]<br>• I then calculated the volumetric rate (VR), and it was 28.8mm | [[File:Bizer08Nozzle00004.jpeg|thumb|none|666px|alt=|• this was the moment, I remembered that there was a limitation, the ''volumetric rate'', which I had read some weaks ago on[https://projects.ttlexceeded.com/index.html Bob's Project Notebook]<br>• I then calculated the volumetric rate (VR), and it was 28.8mm³/s…a bit high as it turned out…<br>(• and yes, I reduced speed from fast to medium in [[Simplify3D]], but that actually didn't change anything. This preset only changes layer height, not the actual speed. And since I manually set layer height, it hat no effect)]] | ||
[[File:Bizer08Nozzle00005.jpeg|thumb|none|666px|alt=|• ]] | [[File:Bizer08Nozzle00005.jpeg|thumb|none|666px|alt=|• no changes, just a bigger object…]] | ||
[[File:Bizer08Nozzle00006.jpeg|thumb|none|666px|alt=|• ]] | [[File:Bizer08Nozzle00006.jpeg|thumb|none|666px|alt=|• reduced layer height from 0.6 to 0.4mm, resulting in VR of 20.64mm³/s]]<br>• \o/ this looked much better!]] | ||
[[File:Bizer08Nozzle00007.jpeg|thumb|none|666px|alt=|• ]] | [[File:Bizer08Nozzle00007.jpeg|thumb|none|666px|alt=|• reduced layer height to 0.3mm, resulting in VR of 14.4mm³/s :-D]] | ||
= The Solution = | = The Solution = |
Revision as of 12:05, 23 July 2021
About
A larger nozzle will result in much faster prints, right? Since it affects the printing volume it will affect it like this:
(new diameter / old diameter)^3 (0.8/0.4)^3 = 8
Hoorray! 8 times faster! At least I thought that…
The Problem
The prints were awful:
- Outer Perimeters looked good, but walls were not completely filled
- Infill looked uneven and hat "holes" in it
- Looked like underextrusion, so I cranked up the extrusion multiplier (with no effect)
- Triple-checked that extruder is working and the wires are not (again…) broken
- After some googling I found Bob's Project Notebook (Mupped Labs) - which lead me into the right direction…#The Solution
- …read on! The pictures will nicely illustrate what I've changed and what effect it haD:
• \o/ this looked much better!]]
The Solution
Lessons Learned
As the author should already have known from RFC1925(8,9) is:
- (8) It is more complicated than you think.
- (9) For all resources, whatever it is, you need more.
- Links
- https://projects.ttlexceeded.com/3dprinting_nozzle_sizes.html ← GREAT ARTICLE! Read it!