Subject says it all...I went over my new bumper cover with 320 grit sandpaper and I am wondering what to use to get rid of paint dust and any oils, etc before I put on the high build flexable primer.

 

There is this stuff called Auto Prep Cleaner and Degreaser... you can get it in rattlecan or in a gallon container.

 

Isopropal alcohol also known as rubbing alcohol

 

brakeclean....unless its plastic.

 

I wouldn't use anything but pre-clean. You can pick it up at autozone or at a local paint shop. When you use it, make sure to have a dry rag to follow what you just cleaned.

 

Ouch; you should've used a cleaner before you started sanding... you can embedd all that crap into the paint when you sand.

I use MarHyde's "total prep", from Pep Boys... there's better stuff out there, but this stuff does work. Somewhat expensive though, $7.99 a can- probably because nobody buys it.

Also look for "Tack Rags"- these are super-sticky cheesecloths that you rub over an area that you've just sanded. It picks up any and all dust. The best part is that you can keep re-using and re-using them as long as you keep folding them to expose a sticky side.

If the area is covered with a fine primer dust, I'll usually wipe it down with just a regular old CLEAN paper towel to pick up the majority of the dust; then I use a tack rag. No sense in covering the whole tack rag with a ton of dust... just use it to pick up the microscopic pieces. Tack rags are usually $1.25 each at a pep boys or similar... if you can find 'em... again, the majority of people don't use them... and stores usually don't carry something if it doesn't sell.

 

You wouldnt have believed what I saw the other night at a club meeting. At the last meeting(1 month ago) this guy mixed some commercial grade molassis and water in this large bucket and stuck some auto parts that had gone rusty in it. He covered some parts in the bucket and some of the parts he partially covered them with the mixture. This month he unveiled the results. The parts had lost the rust and gone to a shiny metal. Some of the parts with paint left on them kept the paint and lost the rust. I could see the benefit in doing this especially if you had parts that you find it hard to get into the cracks and corners. It would work great on something like discs or springs. Just a little info that might help someone.

 

whaa? is this for real? if so where can I find commercial grade molassis? lol

 

I live in Australia and over here you can go to a place where they sell farm goods. Feed and Seeds or farm hardware. It really did a fantastic job and really cheap especially for large parts.