yes he uses a air gun to agitate the large metal flake, for small metal flake he mixes with intercoat clear to make sure it's consistent. And he uses clear base coat on everything. His metal flake gun I believe is a flake buster brand which may not be available anymore. If you're a Facebook user feel free to contact Ben Harrington , there are pages and pages of all his projects as he usually only post them on his Facebook.. have a great day..