sandblasting

[Clip]

anyone here had experience with sandblasters? ive got a shietload of heavy rust and paint/bondo that needs to come off and i was wondering if an open one or a pressurized one would do me better. would an open-air sandblaster be easier on air consumption (looks like it would, but i'm not sure how much of a difference in performance exists)

 

[Fletch124]

I have a closed cabinet sand blaster with abrasive glass inside. It really doesnt do very much for the rust, even on 110psi.

Have you seen the Horsepower TV thing on how to remove rust with water and a battery charger?

Supposedly baking soda blasting takes rust and bondo off awesome! But thats something that you pay someone to do.

 

[jetjock]

Clip: They work if the stuff isn't too heavy. Messy though. It'll suck a lot of CFM too.

Fletch: Try some more aggressive media. Aluminum oxide for example. Get some at Harbor Fright, et al. Garnet is the next step. Silicon carbide is even more aggressive but it'll eat your cabinet alive if you don't put protective curtains in it. I use AO and it does the job in 95% of cases.

 

[CFSapper]

I have a closed cabinet sand blaster with abrasive glass inside. It really doesnt do very much for the rust, even on 110psi.

Have you seen the Horsepower TV thing on how to remove rust with water and a battery charger?

Supposedly baking soda blasting takes rust and bondo off awesome! But thats something that you pay someone to do.

I use to work at a pool we used backing soda to clean small amounts of rust off some of the metal on the pool deack as well as the tile,and chrome.


as for how well it would work on large amounts i dont know

 

[themadhatter]

if your blasting thin metals like body panels do not use sand because it will warp the metal

 

[suprageezer]

Madhatter has it right sand on thin sheet metal will easily warp it from the heat caused by the sand impacting the metal. The last car I restored was baking soda blasted. It worked great Except years after I was done it would rain and there would be small piles of media piled up where it had never been removed. So if you do blast use the right media and make sure you vacuum it ALL out.

Here's a couple of link's to more info

http://www.armex.com/faqs.htm

http://www.superchevy.com/technical/paint_body/paint/sucp_0702_sodium_bicarbonate_paint_stripper/

 

[Wayne G.]

anyone here had experience with sandblasters? ive got a shietload of heavy rust and paint/bondo that needs to come off and i was wondering if an open one or a pressurized one would do me better. would an open-air sandblaster be easier on air consumption (looks like it would, but i'm not sure how much of a difference in performance exists)

I have the one on the right. Purchased it from Norther tool & equip. Does a good job, however your need the biggest compressor possible. Using a 6HP
30gal tank Craftsman - it is taxed to the limit. When blasting outside it will
cover everything with sand in a 10 ft. radius. You can blast sheet metal with it but use ground walnut shells or low pressure and sand (less than 70psi). Because of the expense of glass beads you will want to use a cabinet to recycle the beads. Glass beads can make aluminum parts (engine) look
brand new it also works well on old bolts, screws etc.

 

[Clip]

damn, ive got a 2 or 3 hp/12 gallon tank. im mainly worried about getting rust off of heavy gauge body panels of my 41 dodge. i dont mind if it nicks a little here and there with aluminum oxide, but i need to get all that rust off before i spray some primer.

water and a battery charger? sounds kinda like plating/anodizing.

 

[Mrbaboon]

Yea its the same idea, just in reverse.

 

[7Mboost]

I have used a bench sandlblaster rather large, and it works good but takes a while. I've tooken off paint and rust from wheels and some engine pieces and never had a problem just lots lof time to hit every spot so it doesn't have a blotch if you paint it, kinda like bringing things back to scratch.

 

[Clip]

thanks for the tip jz.

im thinking ill just go with one of the bigger open-air sandblasters and park the truck in the yard, then go at it.