Where to buy bulk (10lbs) of baking soda for soda blasting? - Chevelle Tech
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post #1 of 16 (permalink) Old Apr 22nd, 11, 2:23 PM Thread Starter
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Where to buy bulk (10lbs) of baking soda for soda blasting?

I'm doing a mini-restoration on the L79 car. The L79 has come out for a new rear main seal and some touch up on the heads. I figure while it is out I can really spiff up the engine compartment and front frame and suspension that can't easily be done when the engine is in place. I'm surprised how grungy the L79 has gotten over the years. It looked great from the outside, but once sitting on an engine stand it looks pretty dirty. It will look great all cleaned up, a bit of fresh plating on some odds and ends and a fresh coat of Chevy orange.

The aluminum parts, most specifically the intake, are dirty and stained. I bought a small soda blaster to clean them up, looking forward to giving it a go. But it occurred to me: where can I buy baking soda in bulk? I can buy little boxes of it at the grocery store, but it would take a bunch to fill up the (10lb capacity) soda blaster.

Also, I really want to clean up the distributor housing but don't dare take in inside my normal blasting cabinet. Can soda blasting remove minor dirt and old paint from cast iron? I have pretty mellow media in my blast cabient, but I'd hate to get the grit inside the housing and thus inside the engine!
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post #2 of 16 (permalink) Old Apr 22nd, 11, 2:40 PM
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Re: Where to buy bulk (10lbs) of baking soda for soda blasting?

im not sure where, but i will ask my blasting guy as i have him soda blasting my front fenders and hood as we speak
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post #3 of 16 (permalink) Old Apr 22nd, 11, 3:44 PM
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Re: Where to buy bulk (10lbs) of baking soda for soda blasting?

I bought 2 lb boxes of Arm & Hammer at the grocery. Only takes 5 boxes to get 10 lb and that will clean a LOT of alum parts.

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post #4 of 16 (permalink) Old Apr 22nd, 11, 3:47 PM
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Re: Where to buy bulk (10lbs) of baking soda for soda blasting?

Costco sells 5 pound bags of Arm and Hammer.

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post #5 of 16 (permalink) Old Apr 22nd, 11, 5:27 PM
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Re: Where to buy bulk (10lbs) of baking soda for soda blasting?

it's not the same, what you want is coarser grain. You can get it from TIP, shipping is expensive and the stuff can't be reused like sand.

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post #6 of 16 (permalink) Old Apr 22nd, 11, 6:16 PM
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Re: Where to buy bulk (10lbs) of baking soda for soda blasting?

A & H worked great on my alum intake, but then all it needed was a cleaning.

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post #7 of 16 (permalink) Old Apr 22nd, 11, 6:45 PM
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Re: Where to buy bulk (10lbs) of baking soda for soda blasting?

Will soda blasting make and intake or other aluminum parts look nice? I thought all it really would do is remove paint. It doesn't go deep enough to clean rust or stains, does it? Anybody experienced with it?
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post #8 of 16 (permalink) Old Apr 22nd, 11, 6:51 PM
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Re: Where to buy bulk (10lbs) of baking soda for soda blasting?

Are you fortunate enough to have a HF close by? https://shop.harborfreight.com/catal.../result?q=soda
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post #9 of 16 (permalink) Old Apr 22nd, 11, 7:30 PM
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Re: Where to buy bulk (10lbs) of baking soda for soda blasting?

I was in Harbor Freight this morning. They had 50 lb bags of soda blast there.

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post #10 of 16 (permalink) Old Apr 22nd, 11, 8:30 PM Thread Starter
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Re: Where to buy bulk (10lbs) of baking soda for soda blasting?

HA! Harbor Freight is where I bought the blaster. Looks like I'll need to go back for another visit. I didn't see any soda when I was there last.
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post #11 of 16 (permalink) Old Apr 22nd, 11, 11:57 PM
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Re: Where to buy bulk (10lbs) of baking soda for soda blasting?

It was under the blast pots in a brown 50lb bag at my local one. I wasn't sure what it was until I looked close at the label.

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post #12 of 16 (permalink) Old Apr 23rd, 11, 2:06 AM
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Re: Where to buy bulk (10lbs) of baking soda for soda blasting?

I am sure you guys know this, but just a reminder, anything you soda blast and intend to paint needs to really be cleaned well to ensure paint adhesion. Usually washed down with water & vinegar solution to neutralize the soda.

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post #13 of 16 (permalink) Old Apr 23rd, 11, 6:27 AM
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Re: Where to buy bulk (10lbs) of baking soda for soda blasting?

Quote:
Originally Posted by Rich-L79 View Post
HA! Harbor Freight is where I bought the blaster. Looks like I'll need to go back for another visit. I didn't see any soda when I was there last.
My local HF keeps some blasting materials in the back room due to bag leaks and spillage problems, especially with glass beads.

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post #14 of 16 (permalink) Old Apr 23rd, 11, 9:39 AM
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Re: Where to buy bulk (10lbs) of baking soda for soda blasting?

I've never tried soda on aluminum but it couldn't hurt it, it's gentle. I use plastic media in the blast cabinet also very gentle cleaning. The best way to restore an aluminum surface is to tumble with the right stones, it gives it a correct looking "skin".

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post #15 of 16 (permalink) Old Apr 23rd, 11, 8:49 PM
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Re: Where to buy bulk (10lbs) of baking soda for soda blasting?

Rich,

Have you considered using chemicals to clean the aluminum? I have used them before and been very pleased with the result. It will clean the aluminum without changing the surface. Try some aluminum wheel cleaners and follow their instructions. You can always blast later.

Anything mechanical will change the original aluminum surface.

I have closely inspected "re-skinned" aluminum parts on a number of cars and they do not look original.

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