So this may have been discussed before but I bought a Birchwood Casey aluminum black pen. It basically causes a chemical reaction that causes raw aluminum to turn black. Sorry I didn’t take before pictures but this is on my Zeekio Slim Jim. This would work great on a black Yoyo.
I was thinking of trying shoe polish.
Where did you buy this?
I don’t think shoe polish would stain the aluminum for very long. It would probably wear off quickly.
Amazon. It was $6.
This is cool, not heard of it before! I’m going to pick some up to black out the scuffs on my Theodore.
Thanks for sharing!
No problem. I think as a precaution you should wear gloves to protect your skin. I think it’s some sort of acid in the pen that causes the chemical reaction. I didn’t wear gloves and was fine but it probably wouldn’t be good to accidentally get some on your finger and then touch your eyes or something.
I’ve had fairly good results with felt pens of various colors. Got the best results using a black pen on a black yoyo.
Wandering the sporting goods store today I seen this stuff. I wanted to share and see it’s been discussed before. So I’ll post here.
I was stoked when Recess did another heartagram drop, but I wished there was a little more contrast between the purple and the heartagram. So today I seen this stuff and thought there’s the answer! So a little trial and error later here’s my results. I may give it one more coat to see if I can get it any darker. This is 3-4 applications. I was worried about the anodizing when I started, but it doesn’t seem to have had any negative effects on it.
Dang that’s SICK. You’re giving me… ideas…
Put some gloves on, I’ve got the finger tingles happening lol
Did you just hand trace it? If so, you did a really good job. Looks great!
It’s a liquid product, I used a q tip to apply it to the general area of the etching. The rest was the product in action, it only darkens the raw aluminum. Anything anodized was unaffected. I wish my hands were that steady lol
Gotcha, makes sense!
It did darken a bit more with another heavier coat. Don’t think it’s going to get much more black then that.
Do an entire raw YoYo next lol

















