Hello all
Need some help from the hive mind. I have a small DIY shotblast setup.
When removing more than surface rust the brown layer is removed quickly but leaves a darker black/gray area behind. This can be removed with multiple passes back to a uniform gray.
Must you blast back to clean steel or is it acceptable to just leave the stain and paint with zinc rich epoxy primer.
Thanks
Need some help from the hive mind. I have a small DIY shotblast setup.
When removing more than surface rust the brown layer is removed quickly but leaves a darker black/gray area behind. This can be removed with multiple passes back to a uniform gray.
Must you blast back to clean steel or is it acceptable to just leave the stain and paint with zinc rich epoxy primer.
Thanks