3DPrinting
3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.
The r/functionalprint community is now located at: or !functionalprint@fedia.io
There are CAD communities available at: !cad@lemmy.world or !freecad@lemmy.ml
Rules
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No bigotry - including racism, sexism, ableism, homophobia, transphobia, or xenophobia. Code of Conduct.
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Be respectful, especially when disagreeing. Everyone should feel welcome here.
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No porn (NSFW prints are acceptable but must be marked NSFW)
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No Ads / Spamming / Guerrilla Marketing
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Do not create links to reddit
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If you see an issue please flag it
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No guns
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No injury gore posts
If you need an easy way to host pictures, https://catbox.moe/ may be an option. Be ethical about what you post and donate if you are able or use this a lot. It is just an individual hosting content, not a company. The image embedding syntax for Lemmy is ![]()
Moderation policy: Light, mostly invisible
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You will find this on many high end ultra fast printers. The compressor makes a lot more noise than a fan.
The Prusa MK3S+ duct is probably the best blower fan design for part cooling. The duct only barely enters the path of the exit from the blower unless the print head is on a flat surface that causes back pressure at the exit. Only then does the air get redirected through the duct in a useful way to get better coverage behind the nozzle.
I took this design and made it snap fit over the end of a blower instead of mounting it to the extruder print head. So I got to know it well.
If you know about the Reynolds number and how length and surface texture impact flow, almost all ducts and fans used in hobby printers are indeed garbage.
Water cooling is so cheap now, we should probably be using it for the extruder. I think the issue with small compressors is duty cycle. Like the ones for refrigerators is super quite but they have a low duty cycle time.