Old 10-28-14, 06:33 AM
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Originally Posted by Al1943 View Post
If it is Imron paint it's best to leave it alone. That stuff is deadly. If you've got to sand it keep it wet so that you're not breathing any dust. Wear protective gloves and a mask.
The problem with Imron is the high amount of isocyanates in the solvent. Bad juju for the nervous system but is only hazardous when being sprayed without proper respiratory protection and ventilation. Once fully cured Imron isn't any more dangerous than any other automotive paint. It is never a good idea to breathe in fine particulates so a good dust and nuisance vapor respirator is recommended. The cheap paper masks sold in hardware stores are not adequate. Wet sanding has advantages, among them being the lack of dust, but even hand sanding dry is fine with a proper mask. There are disposable masks made by 3M and others that have a good seal, an exhalation vent, and at least two straps that are OK for occasional use. If you do much work around fine dust and nuisance vapors, you can get the 3M half-mask with replaceable filters for about $15 and new filters are about $7 for a set. These filters will last a lot longer than the disposable masks so the cost is about a wash unless you are looking for something for one time use. The replaceable filters don't clog as easily as the disposable masks either so breathing is easier for a longer time.

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