Can I use the Brass roto-brush on the cold/hard waxes?
If you are going to use a Brass brush, hand or roto, during the post-scrape phase you should use it lightly. The intent is only to remove a little of the excess wax and/or roughen the wax so that the Hard Brown can be more effective. Never try to use a Brass or Metal brush for polishing. As mentioned above, the Brass and Metal brushes will clear the base structure of wax and dirt. After using a Brass brush there should still be film of wax over the structure of the base.
