How do you clean a bead-blaster part before painting?

[twincam00]

Hey guys,

I bought a Wilton bullet last year that I am going to restore. I tried using wire wheels in a die grinder to remove all the rust and old paint but it took forever and if you stayed on a spot too long it would take the texture off the metal and youre stuck with a smooth spot. I sort of gave up on the project.

Then I used a bead blaster at school for the first time. Wow what an amazing machine. I plan on using that to clean all the **** off the vice. My question is, after you bead blast a part is has kind of a gray finish on it, I assume you have to clean this before painting? How should I clean the vice before I paint it?

Also, should I prime it before I paint it? or just use the paint?

 

[Bondo]

Hey guys,

I bought a Wilton bullet last year that I am going to restore. I tried using wire wheels in a die grinder to remove all the rust and old paint but it took forever and if you stayed on a spot too long it would take the texture off the metal and youre stuck with a smooth spot. I sort of gave up on the project.

Then I used a bead blaster at school for the first time. Wow what an amazing machine. I plan on using that to clean all the **** off the vice. My question is, after you bead blast a part is has kind of a gray finish on it, I assume you have to clean this before painting? How should I clean the vice before I paint it?

Also, should I prime it before I paint it? or just use the paint?

Ayuh,... The grey is the natural color of the steel or iron,...

Blow it off with air, or clean it with soap, 'n water, Then blow it off with air...

Paintin' steps depends on the paint yer usin',...
Pick a Manufacturer, 'n product, then use the steps the Manufacturer tells ya to use...
Primer has to be compatible with the top coat, that's why I pick a Manufacturer, 1st...
Which in my case most of the time is Rustoleum...

 

[BlindViper]

After using my sand blaster I use brake cleaner.

 

[Mr.N]

Sandblast
Wash with dawn & hot water
rinse with hot water
dry
metal prep
primer
paint

 

[caper150]

After using my sand blaster I use brake cleaner.

Using brake cleaner will cause issues if you plan on painting it. I just blow them off and prime and paint.

 

[BJ42LX]

Also, do your school a favor and clean the grease/dirt off the vise before putting it in the blast cabinet. No sense in adding all that dirt to the media if you don't have to.

 

[MFolks]

If you want a durable paint finish, bake the dis-assembled vice in an oven at 300-350 F for an hour. First spray the parts,let air dry for at least 1 hour, and then bake. The paint will outgas,so open windows to vent the fumes. I've done this for motorcycle parts with my wife's permission, and our oven has not be damged by paint fume residues for many years.

If possible, suspend the parts to be baked from the oven grill on hooks made from welding rod or wire coat hangers.

 

[BlindViper]

Using brake cleaner will cause issues if you plan on painting it. I just blow them off and prime and paint.

What will it do?

 

[caper150]

What will it do?

Most brake cleaners have some type of silicone in them, so you'll have issues with fish eyes and adhesion at times.

 

[clarkjg33]

I would just go buy an autobody paint cleaner.. Or something like acrysol. A cleaner that will remove and grease or dirt.

 

[BlindViper]

Most brake cleaners have some type of silicone in them, so you'll have issues with fish eyes and adhesion at times.

Guess I got lucky I didn't have any issues when I built the suspension on my truck. My buddy didn't have any issues either, but we use the same cleaner.

 

[Grazz256]

Acetone shuold work as well.

 

[twincam00]

Thanks guys, i wasnt sure if there was a residue left after bead blasting or not

 

[clarkjg33]

It's not so much residue left over from blasting it but your fingers are naturally oily.. A good cleaner will take out any foreign substance that doesn't mix/adhere with paint.

 

[alan camby]

That is why i remove items from the blast cabinet with disposable nitrile gloves.
Blow the part off real well then paint.

 

[alan camby]

I use KBS and por-15 coatings a lot. This is from the KBS site

FOR BEST END RESULTS, apply RustSeal to clean dry bare metals with good porous surface profiles such as tightly rusted, sandblasted, or other abraded surfaces to which RustSeal can "bite" into. Newly sandblasted metal surfaces are the ideal choice for direct RustSeal applications as they require little preparation other than blowing off loose dust. Remember to always wear gloves when handling sandblasted items to avoid contaminating the surface with oily fingerprints. Please note that plastic media, bead or soda-blasted treated surfaces do not provide the adequate amount of abrasion needed for direct RustSeal application and do require Step #2 RustBlast for further metal etching. For all other applications, simply follow the KBS 3-Step System below. Always allow products & surfaces to be painted to adjust to room temperature before beginning.

 

[alan camby]

This is from the Por-15 site.

WHAT IS THE “PROPER PREPARATION”?
If you are sandblasting, blow off the lose dust and apply directly over
the surface. On all other bare metal or rusted surfaces use the Marine
Clean and Metal Ready preps for proper adhesion.