1 You have unexplained, painful swelling of your feet or legs. 2  The swollen area becomes warm, red or inflamed. 3  The swelling is accompanied by a fever. 4  You are pregnant and have new foot swelling. 5  Choose a symptom. 6  Selected Select related factors.  View possible causes.
Acetone is a clear, colorless liquid that is highly flammable. The potential negative health effects are skin, eye and lung irritation. Long-term exposure can result in dry, cracked skin and possible damage to the nervous system. Here is a sample MSDS for acetone in the GHS format (not for official use).
The acetone condenses evenly all over the part, causing the surface to soften and liquefy. Surface tension then smooths the semi-liquid plastic. When the part is removed from the chamber, the acetone component evaporates leaving a glassy-smooth part free of striation, patterning, and visible layer edges, common features in untreated 3D printed parts.