[TheForge] soda blasting

Thu May 22 19:35:01 2003

I have made agitators for plain sandblasters before.  They help a lot.  
A 1/5 to 1/4 hp 3450 rpm motor attached with rubber mounts to the 
hopper.  A 3" diameter round bar two inches long abd drilled to fit the 
motor shaft off center.   Drill a hole perpendicular to the shaft hole 
and tap it for a set screw.   Plug it in and it will keep the material 
feeding to the bottom.   Under no circumstance bolt the motor directly 
to the hopper, since this will inevitably lead to stress cracks.   This 
would be a bad thing on a  pressure vessel especially, on a cabinet it 
is merely an aggravation.    On pressurized tanks I bent up a band to 
wrap around the tank with a clamp end.  I put a layer of rubber between 
the band and tank.  Ideal material is either a chunk of mudflap or old 
conveyor belting.  The mounting was welded to the band, rubber mounts 
were installed between band mounting and motor.     If you mount one of 
these to your cabinet blaster you will be suprised how much more 
efficient it is.

Charles.

Dan Rathburn wrote:

> Terry
> When I worked for a company that made packaging equipment we made 
> hoppers for powders like soda and had internal agitators to keep the 
> powders from caking that would most likely be needed for your soda 
> plaster tank. Some of the powders would setup hard if the agitators 
> stopped to long.
>
> Dan
>
> terry l. ridder wrote:
>
>> hello;
>>
>> someone sent me an e-mail with no message body only attachments. the
>> attachments are the diagrams and bill of materials to build a soda
>> blasting pot. i am still going through the diagrams but a soda blasting
>> pot does not look that difficult to build. may take some experiementing
>> but does not everything. also included was a list of distributors which
>> sell industrial grade baking soda. this bypasses to soda blasting
>> companies which jack the price up because when they repackage it
>> suddenly the ordinary baking soda has gone through a transformation and
>> is not not only better than before but also more valuable.
>>
>> a soda blasting pot is basically a cylinder with a cone-shaped bottom
>> and a dome-shaped top with external and internal piping added. a scrap
>> 100 lb or 250 lb propane cylinder looks like a good fit for the cylinder
>> since it all ready has a domed top. the cone-shaped bottm could be
>> either fabricated separately or by cutting a sawtooth pattern in the
>> bottom of the cylinder. the sawtooth pattern would require numerous
>> welds, while a fabricated cone would have a single weld. the piping and
>> fittings are all standard. nothing that difficult. definitely less
>> expensive than a soda blasting pot from a distributor or manufacturer.
>>
>> may be my summer project. i do have a couple hold over projects from
>> the last several years so this may just be added to the list.
>>
>
>
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