Thanks
@Northbear for your reply. What you’re saying makes sense, it does look like brass.
I was trying to find an old post from one of the reps that where they mentioned what the Heatsink is made of but I couldn’t find it... I’ve been reading too many posts!
I think I will continue to vape with it and monitor the degradation closely.
Did anyone else have their heatsink like this?
If I can get another heatsink somehow, will this inevitably happen again?
In the very middle of one of the chips is some silver. Is that normal for brass?
Brass is an alloy of copper and zinc. Brass fittings are usually a bright yellow/gold color.
If you heat a piece of brass with a torch, then it turns a reddish color, due to the copper.
The silver you see in one of the "chips" is the chrome plating. Something stuck to the
heatsink during plating and interfered with the plating.
Think of a tiny donut stuck to the heatsink, acting like a mask. The chrome plates the heatsink up to the donut and plates the inside of the donut, but can't plate the heatsink where the donut actually touches it.
The heatsink troubles that folks have reported here were all with the stealth heatsink.
The stealth heatsink, at least the one I had troubles with, are chrome plated and then
a black "coating" is applied. That coating peeled off.
If you get another chrome heatsink, it's unlikely you will have similar problems.
If you don't see anymore "chips", then it's very likely that your heatsink just has some
minor cosmetic defects in the chrome plating. I wouldn't worry about it.