Removing paint / rust from car body?

Run_to_da_hills

Which is the best process for stripping old paint and rust? (VW Type 2 Van)

Shot blasting or dipping? Is there any advantage / disadvantage in either process?

Anyone know of anywhere in the country that they would recommend ? ( I believe the Van would have to be primered within hours of being paint stripped)

carchaeologist

Run_to_da_hills wrote: »

Which is the best process for stripping old paint and rust? (VW Type 2 Van)

Shot blasting or dipping? Is there any advantage / disadvantage in either process?

Anyone know of anywhere in the country that they would recommend ? ( I believe the Van would have to be primered within hours of being paint stripped)

With shot blasting you will have to be carefull that the panels dont get damaged from the shot,and primering would be essential or it will start rusting again very quickly.
I dont know of anyone that does either though,it would want to be a big setup to do a van.

macroman

I'd prefer the sandblasting myself (they generally use metal pellets or crushed walnut shell now), I'm not sure which is cheaper, or how widely available either process is, but I assume Sandblasting would be more widely available than dipping as it's cheaper and easier to do - whereas dipping is multi-process with different scale chemicals & corrosives.

Eric318

Or you are back to good old metal brush at the end of your drill and rust converter...

Dustpuppy

I sand blast and prime after. I use a small sand blaster with not too high pressure not to damage anything. It's a **** work and take a lot of time.

macplaxton

"Sandblasting" is a bit of a misnomer as sand isn't (and shouldn't be) used, due to it being a health hazard (silicosis)

I'd try and find someone who blasts with bicarbonate of soda. Look up "soda blasting" either on Google or YouTube. Much kinder to thin metalwork such as car bodies and can be used on GRP bodies too.

FiSe

Shot blasting is the easiest and quickest way to get rid of any metal contamination be it rust, old paint or grease.
You should not thouch the blasted metal by your bare hands and it should be kept in dry storage if not basecoated immediately.

Difference between hand sanded and blasted sheet metalwork:


I have spent 2 days sanding down 2 fenders, got frame oil tank and petrol tank blasted. It took 20 mins and the quality is uncompareble...

...and I think that it really doesn't matter whther sand or any other 'blasting medium' is hazarduos to your health or not as I do not presume, that you'd be the one who will blasting away. And all involved in the process should and probably will have full PPE required as well as proper waste management put in place...

Run_to_da_hills

FiSe wrote: »

Shot blasting is the easiest and quickest way to get rid of any metal contamination be it rust, old paint or grease.
You should not thouch the blasted metal by your bare hands and it should be kept in dry storage if not basecoated immediately.

Where did you get the blasting done? Is there anyone that one can recommend?

I had parts from a WW2 military bike a few years ago as a nixer from a guy that shot blasts head stones, Only that it was a military bike with thick drab paint I would have kicked up a fuss about the coarse finish.

FiSe

Tallaght Powdercoating would be my place of choice. It's across whole the country, for me anyway, but worth the trip.

That fender on the picture was done outdoors with industrial blasting machine, so it is a bit rough, but was under pressure...long story... but heavy coat of filling primer did the job