3DPrinting

23937 readers

275 users here now

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

No bigotry - including racism, sexism, ableism, homophobia, transphobia, or xenophobia. Code of Conduct.
Be respectful, especially when disagreeing. Everyone should feel welcome here.
No porn (NSFW prints are acceptable but must be marked NSFW)
No Ads / Spamming / Guerrilla Marketing
Do not create links to reddit
If you see an issue please flag it
No guns
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 ![](URL)

Moderation policy: Light, mostly invisible

founded 3 years ago

MODERATORS

j4k3@lemmy.world

andypiper@lemmy.world

GrayBackgroundMusic@lemmy.zip

What are some dumb mistakes you have made with 3D printing? (discuss.tchncs.de)

submitted 4 days ago* (last edited 4 days ago) by Rolive@discuss.tchncs.de to c/3dprinting@lemmy.world

32 comments fedilink hide all child comments

I'll start off with a recent one. I forgot to connect the hotend cooling fan when remounting the hotend. After a while the printer jammed and the whole toolhead got so hot that it started to melt. The brass inserts were coming out of their sockets and the hotend stood at an angle instead of straight down.

I also noticed that the "teflon" tube connecting the extruder to the hotend was not in fact teflon. The slowly melting ABS was blowing a bubble in that tube and it was clearly starting to melt.

It was quite a pain in the ass to fix as I did not have a second toolhead nor a second 3D printer to print a new one so I had to fix the extruder/hotend in place using 2-part glue hoping that the printer lasts long enough to print a new toolhead.

I should probably have either a thermal fuse or a smart filament sensor that notices jams as well. When your hotend cooling fan fails, or the operator forgets to connect it, the filament will jam in the heatbreak and if it goes long enough the whole hotend will be plastic-meltingly hot. A jam sensor should see it before the toolhead starts to melt.

you are viewing a single comment's thread
view the rest of the comments

[–] morbidcactus@lemmy.ca 5 points 4 days ago

Old one I've told before, not moving to a fixed hotend as soon as possible (v6 style hotends the mk3s uses for example, really easy to mess up) have absolutely accidentally loosed the block during a nozzle change, petg was leaking out of the top super slowly, only realised the issue once the blob started pushing the sock off.

Kept that hotend around for a while as a display piece, was a total write off. That also was the event that made me start keeping spares on hand, why I have my printers more or less part compatible for consumables (always keep a few extra heaters and rtds/thermistors around, do also have at least one extra hotend around).