1957 Chevy truck re-rebuild

[Stepside Jim]

Auuurgh, still block sanding..... prime, block, prime, block.......

But why, why prime, block, prime, block?

Pictures tell the story, here we go.

The high build primer is sprayed and dried. Then block sanded with 180 grit. Problem is, it's dull. The real problem is, when done and cleared, anything missed here will show later. We need to get a clear/shiney finish now.

Dull finish after sanding.


Here I've wet the surface with a pre cleaner, sometimes I'll just take water and wet the surface.


With a dull finish I couldn't see in detail to find the low spots. By running my hand over the finish I could hardly feel the low spot. It wasn't till I used the reflection of the shop stripe on the wall to see this deflection of the width of the stripe to see the problem area. This low spot would definetly show after the final painting.


I can either spray and sand, or I can directly focus on this low spot. My choice is glazing putty, then block sand the glazing putty. After the block sanding of the glazing putty, then a coat of high build primer.


Now after the primer blocking. The stripe reflection now stays consistant all the way across.


Sometimes the issue isn't fixing the low spots, it's finding them in the first place. Moving the light back and forth didn't show this spot, it took a long flat reflection to expose it.

Ok, back to sanding.... Jim

[_Ogre]

Originally Posted by Stepside Jim

Auuurgh, still block sanding..... prime, block, prime, block.......

nice work on the interior seams
i didn't do them and wished i had, i see them every day
i was just so tired of your quoted text

i was unable to see or feel minor in's and out's when doing my body work
i could fix it when flaws were pointed out, just could find them
luckily i had lots of people to show me, too many people...