Sandblasting reference?

On Sun, 12 Aug 2007 22:49:59 -0500, Dave S
wrote:

Michael Horowitz wrote:
On Tue, 16 Aug 2005 02:59:39 GMT, "Cy Galley"
wrote:


You can also use White masons sand for large projects in the open. Works
very well and doesn't cost very much.




I'm aware of the discussion concerning health and using sand.
If I go shopping for a respirator what qualities should I look for?
I plan on buying one for when I start spraying coatings, but I"m
thinking I"d want something else to keep small sand out of my lungs
- Mike

#1 Do not use sand- period. Use glass beads, coal slag, etc that has
little or no crystalline silica.
#2 Look at the MSDS for whatever you decide to use. It will normally
list permissible exposure levels. (Outside with a well fitted P100
respirator is probably ok - Sold at most welding stores)
#3 If you're doing this in an enclosed space or often look into a
supplied air system.

Spray coatings - if they contain isocynates, you will need a supplied
air system.

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