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Making things last in extreme environments or when things go wrong
Offshore, Off World, 3D

Many products are designed to be disposable, some are not

Arduino Mega, replace with the Taurino, HK, EU, world, or the Rugged Mega, USfor compatibility.
SinapTec, Gen7 DIY solution, tbd
more voltage capable, surge protection, reverse polarity protection...

When manufacturing PCBs
1/4W resistor vs 1/2W?
Capacitance max 12V or 25V?
Diode or polarity protection
5V protection of Arduino on a 12V board

Fuses to protect peripherals (heated bed, hotend

Cases make electronics dust resistant
IPX standard for waterproof casing

There needs to be a Category: Ruggedisation!