sandblasting

[dowierj]

So I have my car stripped down to just a few parts left. I wanna do as much as I can before i ship her into the body shop for paint, Im thinking about renting a sandblaster and compressor. My biggest problem is the undercoating-sticky tar substance that only a propane torch will remove on the underside of the car. I wanna get the whole car to bare metal and work especially on the underside because i suspect a few problem spots that where just coated over with that goop. I know sand will build up alot of heat and warp the metal like the roof, so should i use sand on the bottom and then that nutshell stuff on the body panels?

[kcress]

Hmmmm
Others will probably know more or different but I sand blasted my International before painting it. MAN DID THAT SCREW IT UP!

My feeling is, do not sand blast anything unless it has heavy scaling rust on it so more pits and gouges from sand blasting are no worse.

[kcress]

Ha! Looks like you had fun Denny!

So they actually pressurize the sand hopper? That lid must be heavy or latched?

Foot pedal bad?

[dowierj]

so glass is good, cuz it removes no metal, how bout rust? Im just planning on using sand on the underside....and where you cant see. and nutshell for the body. and we got a compressor and blaster lines up, so i just need to know whats worked for you guys

[dowierj]

so you recoment glass beads, how many 50 pound bags is the car gonna require? and how bout that walnut shell stuff, that would work well to right?

[RestoRod]

Quote: "Anyone wanting this, just email me. I didn't want to tie up space."

Denny:
I tried to e-mail you and got this response:

"Sorry! That user has specified that they do not wish to receive emails through this board."

[dowierj]

okay and once i blast the underside, and areas that need it, how soon must I primer it? I plan on leaving it bare metal for a couple weeks inside a garage, dry area. Will the humitity rust the sandblasted areas?

[kcress]

It will rust while you look at it. Seriously, you *DO* need to prime it like, right away. (If not sooner.)

[dowierj]

can you use por-15 over primer?