Junkyard Yellow Paint Source

If you have ever bought a part from a junkyard, you have noticed the yellow paint they mark with. It is indestructible. I want whatever pen they are using. I have tried acrylic markers from Arteza, but it doesn't stick to metal. Anyone know what the U-Pull-N-Pay uses?

In reply to pinchvalve (Forum Supporter) :

My guess is the yellow paint markers from the Harbor freight welding section

I will guess it is a Dykem "Brite mark" pen since that is what every welding supply store carries

https://www.amazon.com/Brite-Mark-Medium-Paint-Marker-Yellow/dp/B0000DD2EV

https://www.napaonline.com/en/p/BK_7101713

https://shop.advanceautoparts.com/p/forney-yellow-paint-marker-70822/10629875-P

https://www.amazon.com/Allstar-Performance-ALL12051-Yellow-Marker/dp/B003BZLQ4K

RevRico said:

In reply to pinchvalve (Forum Supporter) :

My guess is the yellow paint markers from the Harbor freight welding section

I tried one of those and it really sucked. Paint just wouldn't flow out of the tip well. Couldn't mark reliably on bare mild steel.