Just be mindful of the Tupperware you'll be using. You may want to test and see if the acetone will dissolve your Tupperware.
Never tried it, but I would think it would take a lot more work and effort than the acetone method.
I use the fume method and it works great! I have had certain stock plastic wheels melted down to sludge just from the fumes, so beware. Tires all seem to be fine.