CTC Bizer with 0.8mm Nozzle: Difference between revisions
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[[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: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=|• no changes, just a bigger object…]] | [[File:Bizer08Nozzle00005.jpeg|thumb|none|666px|alt=|• no changes, just a bigger object…]] | ||
= The Solution = | = The Solution = |
Revision as of 13:12, 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:
The Solution
Reduce volumetric rate (extruder throughput) until it looks fine :)
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!