you can see it because the filler absorbs the primer more - it's sealed now so subsequent coats of anything act more like the non-filled areas

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics