To this end, I've constructed a simple enclosure containing a fan mounted on the side wall to circulate vapour within the chamber. The lid has a tiny hole in it to release pressure (otherwise the lid pops off). The printed pieces sit on a small metal stand so as not to be bathed in the liquid acetone at the bottom of the chamber.
The alert amongst you will note this is a great way to create an explosive fuel-air mixture. It hasn't exploded on me... yet. Hopefully, if it does explode, the lid will pop off and direct most of the blast upwards.
The recorder on the left is untreated, while the recorder on the right has had half an hour in the chamber. Shiny!