The lock button on my car key fob hasn’t been working for ~ 6 months. I was looking at buying a new key fob for between $9 to $35, but something told me to take it apart.
Some isopropyl alcohol, a used toothbrush, and 5 minutes later I discovered some kind of sticky blue goop had infiltrated my key fob. After a quick brush down and slight emersion of the lock button, my key fob is now working again.
Ah. Flashforge and Oz. That answers all, thanks :-)
I was gonna say, my first 3d printer was a DaVinci MiniMaker for about $250 USD back around 2014 or so, so $600 for a small printer was blowing my mind.