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View Full Version : Wow this looks interesting Soda Blaster



Alistair Hosie
04-24-2010, 04:04 PM
what do you guys make of this.video?Alistair



http://www.garagenight.tv/diy-soda-blasting-build-your-own-rig-cheap/

krutch
04-24-2010, 04:27 PM
Abrasive cleaning to be sure. I guess you could use anything that will flow to clean with. What next gunpowder? Sewer squeezzens?
Maybe that will work for my teeth, The baking soda that is.

Ken_Shea
04-24-2010, 04:27 PM
There is a lot to be liked about that for incidental small parts, also very safe with no harmful dust and it's quick and pretty cheap to make and use.
Does not look like it would replace a glass blaster any time soon though. Have heard of commercial units that used baking soda, also dry ice.

Alistair Hosie
04-24-2010, 04:39 PM
What about household salt ? I rather think this would be good too .If it would work.Alistair

aboard_epsilon
04-24-2010, 04:44 PM
Yes, Ive heard that baking soda is good for putting a final finish on alloy parts ..Been known for years .

but this gets me wondering .

Metal nozzles on blast guns wear out at a hell of a rate ..
I've noticed it is very hard to blast a plastic or painted material

The harder the surface you are blasting ..the easier it is ..

Now then, how about plastic blast gun nozzles instead of metal ones ......worth a thought .


How about molded plasticine / play-dough modelling clay nozzle ....the grit will embed in theplasticine nozzle and stop it wearing out perhaps ..going on the lines of bearing material like babbit that achieves the same results

all the best.markj

Ken_Shea
04-24-2010, 04:51 PM
Metal nozzles on blast guns wear out at a hell of a rate ..

Mine has the same nozzle after almost 25 years, while not used every day has had very frequent use, has only had glass blasting media through it and is made of carbide, honestly, while I never have measured it too new for comparison, it looks like it did when it was new.

Ken

dp
04-24-2010, 04:53 PM
Here's a review of the processes and pro's and con's of the media:

http://www.crankshaftcoalition.com/wiki/Soda_blasting

Ken_Shea
04-24-2010, 04:57 PM
What about household salt ? I rather think this would be good too .If it would work.Alistair
Sure I bet it would work as well or better then baking soda, down side the dust would be very corrosive and would kill any plant life where ever it fell or the rain would carry it.

May also be an irritant and may pose some risk to those with heart issues because of the potential ingestion of the salt dust but that is just thinking out loud.

aboard_epsilon
04-24-2010, 05:02 PM
Mine has the same nozzle after almost 25 years, while not used every day has had very frequent use, has only had glass blasting media through it and is made of carbide, honestly, while I never have measured it too new for comparison, it looks like it did when it was new.

Ken

Well this is mine ..and nozzles last about two hours ..
note it says ...•All metal construction with specially hardened steel nozzle• :(
Think they were about £6 each last time i bought them
http://www.machinemart.co.uk/shop/product/details/sb3-gritblast-gun

all the best.markj

Ken_Shea
04-24-2010, 05:16 PM
Well this is mine ..and nozzles last about two hours ..
note it says ...•All metal construction with specially hardened steel nozzle• :(
Think they were about £6 each last time i bought them
http://www.machinemart.co.uk/shop/product/details/sb3-gritblast-gun

all the best.markj

Next time you get a new nozzle, take a file to it and see what that does, you might be able to make one that is better and harder.

gnm109
04-24-2010, 05:22 PM
Carbide inner and outer tips are available for standard bead blasting guns for around $35 to $40 US a pair. If you get carbide, you'll never need another one. Mine are still going strong after more than 15 years in my blast cabinet.

I''ve used course and fine glass, soda, walnut shells and lately copper slag. It's all good.

Your Old Dog
04-24-2010, 05:31 PM
Just curiass. Am I the only one who thinks the kid went through a lot of work on a part that appears to be cracked in the middle of it? Does not show on one side but does on the dirty side before and after cleaning. Could be a casting mark but why would one be at that location on the part?

Baking Soda looks like good medium but I have to wonder about the clumping. I would think after a period of time you'd have a brick of baking soda and a clean fresh smelling shop :D

Punkinhead
04-24-2010, 05:35 PM
I wouldn't mind trying this. Where would one buy baking soda in quantities bigger than the little boxes you get at the grocery?

Ken_Shea
04-24-2010, 05:49 PM
I wouldn't mind trying this. Where would one buy baking soda in quantities bigger than the little boxes you get at the grocery?
Got a Sams Club near you?
13.5 pound bag $6.16 here.

alanganes
04-24-2010, 08:27 PM
Years ago I worked for a division of GE that made instrumentation for aircraft. Some of the position sensors were made by wrapping a toroidal form with very fine varnish insulated resistive wire. The wire needed to have the varnish stripped off in specific places. This was accomplished using a mask and a soda blaster. The soda blaster was just abrasive enough that it took off the varnish without harming the wire itself. That unit recycled the blast media, keeping it dry so it would feed smoothly was a bit of a headache. I seem to recall that the media cabinet was kept warm and purged with dry air or maybe nitrogen to prevent it from absorbing moisture from the air.

Neat system for some applications.

Mcruff
04-24-2010, 09:31 PM
Soda blasting is very common anymore and is what most body shops prefer to use to strip paint as the soda will not heat up and warp the metal body panels and you can generally leave them for a long while and not get rust back on the bare metal. It is also more controllable than using glass bead as you can make it take only one layer of paint and not damage the primer below it. There isa coupel of local guys thta have been doing soda blasting for at least 5-6 years and make a good bit of money from the local hot rodders restoring older cars.

Don Young
04-24-2010, 09:31 PM
We have a local sand blaster who also does soda blasting. I had some old stainless steel exhaust manifolds cleaned with soda and it did a nice job.

claudev
04-24-2010, 10:46 PM
Up to date dentists around here (South Arkansas) routinely use a mini sized soda blaster for finish cleaning teeth after the usual scraping process.

From this I assume that it would be safe and effective for finish cleaning most small delicate shop items. Might not be aggressive for heavy cleaning.

Arcane
04-24-2010, 10:49 PM
It would be nice for carburetor cleaning. You wouldn't have to worry about plugging any tiny passages or causing any dimensional changes.

J. Randall
04-24-2010, 11:12 PM
Punkinhead, I have wondered if sodium carbonate from the pool and spa supply would work just as well, don't know if it is any cheaper, but the have bigger buckets of it.
James

Teenage_Machinist
04-24-2010, 11:53 PM
On dry ice as abrasive and cleaning agent: It's been considered as a way to clean Mars dust off of astronaut's space suit when going inside. Martian atmosphere is pure CO2. Mars dust getting into things is a real worry based on what Moon dust did to Apollo space craft.

datsun280zxt
04-25-2010, 08:30 AM
I'm surprised no one has mentioned harbor freight as a source for equipment and soda.
http://search.harborfreight.com/cpisearch/web/search.do?keyword=soda+blaster&Submit=Go

tdkkart
04-25-2010, 09:19 AM
We're using soda at work, big industrial style cabinet with a large cyclonic media seperator/recycler system on it. Worked as designed for the several types of media that had traditionally been run through the system. Never had any noticeable dust issues.

Enter baking soda..........and you've got the most gawd-awful mess you've ever seen. The stuff is so fine it apparently comes out of every possible opening in the cabinet system, and layers all over the shop.

RKW
04-25-2010, 09:38 AM
Soda blasting is also used for mold remediation in homes. It is safe to use and won't destroy wood surfaces like plywood.