I saw this technique on Facebook, and figured eh what the heck worst case I toss a 19 cent tile and a bit of paint away…
First off learned the hard way don’t let paint dry outside on sub freezing temperatures. It bubbles. But again this was only a test piece and I figured what the heck I only wanna see if it works.
Short answer, yes, yes it does 
And I love that effect! (Looks like deliberately crackled paint.)
Black spray paint on a white tile?
and wow - yeah, that’s cool looking! The bubbles totes work with the subject! 
600 years takes toll it does
Blue paint first, let dry, then black paint. The error was letting the black paint dry outside in sub freezing temperatures. But I couldn’t be happier with the results. The bubbles made a crackling effect that was just awesome. I’m going to test out a tile or 2 in the freezer to see if I can’t replicate the error.
Wow! So the settings were such that you only burned through the black an partially through the blue? Was there ever enough power to etch the tile glaze?
Indeed…this is very cool! Nice accident? 
Nice! It will be interesting to see if the freezer replicates it. More special effects to learn!
Very nice - I really like the two color effect. Subtle but makes an impact!
Short answer: Work, it does, yes!
FTFY
That looks really cool.
…and I thought tiles were addictive before! 
Very fun project!
Think I’ll wait for some warmer temperatures to try the technique.
Awesome tile!
I got bubbles by drying paint outside on a misty day back in Washington state. In case you don’t have a freezer handy.
Do you seal it afterwards?
Clear shellac yes.
Not to burst your bubble(s) 
but do you think the bubbling was only because of cold. The reason I’m asking is because I recently painted some aluminum with a thick coat of rust preventative paint. I let it dry thoroughly and repainted with a second coat. The paint began to “crinkle”. I think the top layer of paint acted like a solvent and “reactivated” the bottom layer. It happened again on another piece. The smooth surface of the tile, or in my case, aluminum may have added to the problem, because of lack of good adhesion. I did rough it up a little prior to painting as well…hmmm 
No worries, I know it to be the sub freezing temperatures because batch before and after no freezing temperatures and no bubbles. Also the freezer trick replicates the bubbles.
Getting back into the swing of things
Cancer SUX, but finally getting my feet back under me Just rocks.
Also discovered a new to me way to do this without paint or sharpies, using Titanium Dioxide
Pictures forthcoming.
Nice effect. So glad you are regaining strength and enjoying some creative endeavors!
Great effect! I am glad you are back and creating.
