I am a new member but have been consuming forum information for a while now. I would like to thank SPI for hosting this great resource and the members for the wealth of information they provide.
I am sanding my 1870 karmann Ghia convertible in preparation for epoxy. The car has been completely chemically stripped to bare metal inside and out (I used Citristrip to remove the paint.) The car was then treated with Eastwood After Blast (Phosphoric acid.) I now know that was a bad decision but will retreat and neutrlize. This is my first restoration and I have very little knowledge of how to prepare metal for epoxy and filler.
My questions are:
Should I machine sand the metal or hand sand with 80 grit?
When is it time to change the paper?
What should the surface look like when it is properly sanded? (should I see scratches or a "polished" surface?)
I have been taking the surface down to shiny metal with a 1/4 sheet palm sander then scratching the metal with a hard block in a cris-cros and circular pattern.
Thanks,
Emil
I am sanding my 1870 karmann Ghia convertible in preparation for epoxy. The car has been completely chemically stripped to bare metal inside and out (I used Citristrip to remove the paint.) The car was then treated with Eastwood After Blast (Phosphoric acid.) I now know that was a bad decision but will retreat and neutrlize. This is my first restoration and I have very little knowledge of how to prepare metal for epoxy and filler.
My questions are:
Should I machine sand the metal or hand sand with 80 grit?
When is it time to change the paper?
What should the surface look like when it is properly sanded? (should I see scratches or a "polished" surface?)
I have been taking the surface down to shiny metal with a 1/4 sheet palm sander then scratching the metal with a hard block in a cris-cros and circular pattern.
Thanks,
Emil
