I've used a similar flake gun (from another supplier) for several years. I wouldn't be without it. The gun allows you to put down chips faster and much more evenly than hand broadcasting. I normally only use 30-35 lbs of chips on a 400 sq ft garage floor to achieve 100% coverage and only have a quart or so of excess chips to sweep up when the epoxy is cured.
Some suggestions on using the gun:
1.) Use a low pressure (18 PSI or so) tank less compressor. Compressors with a tank introduce water which will make the chips sticky and clump up. Higher pressure compressors will make the job more difficult.
2.) Do the stem walls first. Coat them with epoxy including about 1/2" of the edge of the floor. Wait about 10 minutes for the epoxy to get tacky.
3.) Spray chips on the stem wall by holding the gun only about 18" away and just cracking the trigger enough to create a low pressure flow of chips.
4.) Sweep up the excess chips before you do the floor.
Patrick
California Concrete Restoration
Laguna Hills, CA
