Interesting. I never event considered smoothing my prints, but I was reading about some guy that did this successfully on reddit.

This is what he does:
I used a cheap pot w/glass lid, heat plate, 3 small pieces of delrin, a small piece of glass and acetone.
Heat the plate to 110c
Put a Layer (1/4)" of acetone in the pot.
Place the delrin pieces evenly spaced to hold the glass above the acetone.
Place the pot with lid on the heater for a few min to heat.
Then set the glass w/parts on the delrin supports
Lid on
The parts were in the pot for 10 min. I think 5min would of been fine for what I needed.
Let dry for a few hours after removal.
And the end results: