I am spraying M.L.Campbell Magnalac. The can says two coats at 4 to 5 wet mils will produce a good finish but do not apply more than 3 coats. Furthermore it says that a dry finish should not exceed 4 mils. Can I safely assume that 3 coats at 4 to 5 wet mils will dry down to 4 dry mils?
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Magnalac has 28% solids. So if you spray a total of 15 wet mils, the dry film will be 28% of that thickness, or 4.2 mils. A little too much. I would NOT exceed the 4 mils specified - Magnalac is pretty temperamental on dry film thickness. To avoid possible failure, I'd spray 3 - 3-4 mil coats instead of the 4-5 mil suggested (if you need to spray 3 coats for some reason). If you are spraying a cabinet, be very careful not to get an excessive build-up in the corners.
Their newer Maganamax is said to be more forgiving, though a couple of guys have said they've had re-coat problems when spraying over semi-cured coats (two days).Paul
F'burg, VA
Edited 6/14/2002 7:27:30 PM ET by Paul
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