There is also a difference between good and bad advice. What we can get away with in a jam is not good advice to give others. At best it is the absolute worst lowest end advice that might be still considered functional. But using auto parts on a 3d printer is just a bad suggestion. And to pwm a coil with an IC controlled board is to suggest to others that they go set their homes on fire. And I will correct that each and every time I see it. Here or anywhere else.