Z grip?

hey guys just shaving some stuff.Im wondering if you are better to use a fiberglass filler or z grip directly over the welds first?Which is better?

use a fiberglass filler like dynaglass directly over the welds before you use regular filler

yup the fiberglass filler is less absorbant than reg filler. you could just coat it in fiberglass resin, but that gets messy...

Be sure to spot blast or at least wire wheel the shaved area first to be sure all welding gas residue is gone