Sandblast cabinet tips/ideas/plans

Charley Davidson

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I'm gonna build a sandblast cabinet, I want a fairly large one and I'm finding they are quite expensive. I have some steel for it and just realized I have a central vac system that mey work for dust collection. Any of you build one or have any ideas of features I may want?
Here's the central vac system I have.

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Lots of lights and foot pedal control is a must for big parts. TP tools that sells the Scat blaster brand has plans and lots of parts for home built units.
 
Hi Charley,
Lots of light!
I just this week started my own sandblasting cabinet.
Forgot to take a before pic but this was a ally enclosure of some sort Just a regular rectangular box with 5 sides. It had a few cutouts and whatnots to patch or remove. I cut and split it to make the tapered sides. Got it welded and patched to hold its shape whilst I progress along.
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The window is cut out but thats about it so far. Still looking at gloves so when I decide I will make the flanges to suit. Make sure yor gloves are long enough you can reach all the areas inside your cabinet.
Because of static build up they say to use low voltage lighting inside but the design I am using recommends put the lights on the outside in their own little ventilated enclosure and shine through a port window. That way you can use really bright mains powered lights.
Building the work shelf for inside at the moment.
The best design for ease of use is have the hand entry holes on a vertical plane, and the viewing window inclined at an angle. Because I am working with an existing shape mine is going to have the roof sloping away as well, but ideally you would want the working area square, as I am loosing some working room inside.
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Make sure all the surfaces inside are vertical or inclined. If you have a door on a vertical surface you need to make overhanging lips so that the media doesnt build up on edges and fall out when you open the door. Make sure that it is well sealed. Get really bright lights.
Put baffles on your vac ports so you reduce the media you suck out. Paint it white inside to maximise the really super bright lights you will want.

I will keep you posted

Cheers Phil

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That central vac should work great, I have one in my shop also. I use a big shop vac on my blast cabinet. Make sure the filter is fine enough to keep the grit out of the motor.

I agree with sd624, good lighting and a foot pedal. I am going to put 2 or 3 rows of LED lighting in mine, just haven't gotten around to it yet.
 
Some 25 years ago my mom bought one of the first water-filtered vacuum cleaners and it was pretty effective (the biggest problem was to remove the dust converted in mud from it!).
The basic working principle is this:
https://en.wikipedia.org/wiki/Water_pipe_percolator
I think this could be a solution to have a better reduction of fine particles.
 
I'm gonna build a sandblast cabinet, I want a fairly large one and I'm finding they are quite expensive. I have some steel for it and just realized I have a central vac system that mey work for dust collection. Any of you build one or have any ideas of features I may want?
Here's the central vac system I have.


Have a look at this thread there was a couple of good posts about dust collection/control for blasting cabinets that you might find useful.....!:))

What works to safely vaccuum metal dust from belt and disc grinders?
http://www.hobby-machinist.com/showthread.php?t=22956&p=205149#post205149
 
Make it bigger then you need for sure with a big old door. If I could add one thing to my cab it would be sight glass and gloves to the back side. It sucks yanking a part thats to big to rotate, hardly fits through the door, all because you cant blast from the back side
 
We put a hole in our door for the long parts we sometimes do that would not fit otherwise, then use black gorilla duct tape to cover it.

Construction sand from Home Depot at $5 a bag is our primary media. It is dry and coarse and cheap. At that price just replace it ultra often which is what we do. We use it a ton on aluminum, but it will leave a texture (we prefer the texture as we are painting the parts anyway) If you want a nice shiny raw aluminum finish use new fresh glassbead.

I bought a Tungsten tip, might be the best $50 I ever spent. Its lasted years when a cheap one couldn't make a full day.

Install a 2nd air only nozzle for cleaning off the dust before you open the door.

Route the exhaust from the vacuum to the outdoors, you never know what crap its spewing out.

I use one of the larger HF cabinets and have probably put over 20 tons of media through it over the years, most of the inside paint is missing now. The gloves are starting to look like Swiss cheese so I might just replace the entire thing now.
 
I built a sand blast cabinet out of 3/4" white faced MDF about 5 years ago. It is still holding up very well. Cost me about $50.00 plus the kit from TP Tools. My cabinet is 5' long x 2' deep x 2' wide.
I may still have the plans if anyone is interested.

Chuck
 
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