January 18, 2025

Is My Printer a Fire Hazard?, 3D Printing for the Woodshop, Guy talks about Glue Again, and MORE!!!

49 minutes

This Episodes Questions:

I picked up a cheap elegoo Neptune 4 pro on sale so I would have a fast way to kick out some PLA chotchkes for the kids. It was pretty fast and good, until some screws came loose on the hot end, and I while I was realigning the hotend and re-fastening the screws, something happened that caused the heater to go into runaway heating.

Basically what I think happened is I wiggled the heater cartridge wires and they shorted out and "fused" the MOSFET for the heater which is on the main board.

What is incredible is that this small electrical component failed "open" meaning anytime the power is on to the machine, it's pushing 100% power into the heater with no way to shut off. Is this normal? Because it seems really stupid! I've seen on some main-boards they advertise replaceable MOSFET modules and didn't really understand why. But, is this really something normal users should have to worry about? It's a super bad fire hazard to have the heater fail-"unsafe". Have you seen this with many other brands? Should I have known this could happen? Did I just miss seeing this lesson during my research on twitter and youtube because I came into the hobby in the last couple of years? It's scary.

Tim

Hello Guy, JJ, and Jerry ! I’m a recently new listener to the Podcast and I throughly have been enjoying the episodes. I currently have a Bambu Labs P1P printer and have been 3D printing since the pandemic with the Ender-3 line of printers, also I have been woodworking with my father even since I was a little boy. Now that I’m older I was wondering how I could incorporate my two hobbies to improve my woodworking experience. I have a pretty big lab and I have a Grizzly Sliding Table Saw, Grizzly Bandsaw, Miter saws, routers, drill presses, Jointer, Lathe, and a vacuum. Another sub-question I have is about wood glue and what filaments would be better or worse. Thank you all for your help!!

Gabriel

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