I am glad that worked out for you. I have rolled the dice a few times using some harsh chemicals. I have used acetone to soften or remove super glue. Sometimes all works out, sometimes not.
Acetone can melt plastic. It can liquify it. The strength of the acetone, the quantity used, and the length of time of acetone contact makes a difference in the results. Try acetone on some plastic junk items and see what happens. It can ruin the finish of a plastic machine.
I think it is wise to always test first in an inconspicuous and inconsequential place before using acetone on anything. A little acetone may take something off of a tough surface, but it will likely take any shine off of a lot of finishes and it may even leave a hole in some.
On this general subject, I was cleaning some glass with rubbing alcohol on a cloth, and I happened to run the cloth across a Sew Steady since I was in the area. The alcohol immediately began removing the lettering of the Sew Steady! I am usually pretty careful but I did not anticipate that, even though I have successfully used rubbing alcohol to remove marker ink from plastic sewing machine cases and accessory boxes.