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  #11  
Old 10-17-2018, 05:23 PM
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The way it works inside the cabinet is that there is a "scoop" that covers the hole where the air is being sucked out of the cabinet. That scoop keeps the strong suction from pulling out media as well as dust. (this is the red painted scoop on the back side)

Then, there is another scoop on the left wall of the cabinet that we made, and it is where fresh air comes in to give a free flow of air when the vac is running. The air enters there and leaves via the red scoop. I installed a little round Stainless cover on the outside to dress it up a little and to keep media from coming out that hole)

I just realized I did not take a picture of the red scoop that HF had installed in the back of the cabinet, but that picture of the hose running to the back of the cabinet is connected to that scoop.
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  #12  
Old 10-17-2018, 05:30 PM
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So,, that is basically the system that cleans the air inside the cabinet so you can see what you are doing. The air comes out of that one scoop, through that hose on the back of the cabinet, goes to the Dust Deputy, and then another hose goes to the shop vac.


We tested it last night with some pieces of balled up masking tape, and it sucks it right into the Dust Deputy and deposits it into the inner bucket.
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  #13  
Old 10-17-2018, 05:41 PM
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Ok, that is the air filtration system. Now, there are two other systems that we modified. The first one is the pressurized air that goes to the gun to do the actual blasting. Our air compressor runs at 140 pounds of air, and, all the literature we have on our new system says 60 psi is about right, so we had to put a regulator on the cabinet so we can crank it down.

I found a nice little regulator at HF for about $13, bought a bunch of nipples, tees, elbows, barbs, and other brass parts, and mounted it to the leg of the cabinet. I also put a gauge on there so I can see what my actual pressure is.

And then, Dan had a great idea. He said it would be nice to have an air blowgun on the unit so you can dust off the part you just blasted before removing it from the cabinet, so we added a tee BEFORE the regulator (so we would have full pressure to the blowgun) and we ran a hose to the side and coiled up the hose by the cabinet door.

So that we would not have to keep reaching under the regulator every time we wanted to put on and remove the air hose from our shop compressor, we put a short dropdown hose on the regulator, and now we can reach the air chuck much easier, and not put any strain on the regulator each time.


More sideways pictures, I am such a dummy when it comes to computers !)
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  #14  
Old 10-17-2018, 05:53 PM
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The way the air system works on this setup is like this. The air from our air compressor enters the regulator, and the regulated air coming out goes to the foot pedal (blue part) then it goes through the side of the cabinet to the hand held gun inside. The kit (from Eastwood) comes with the pedal, hoses, and gun. It is really a nice setup, and I think it was only about $70, if I recall.


The factory HF cabinet already had a hole in the front for their hose to go in, and we just installed that 90 degree fitting in there to run the red hard hose to.

The two hoses inside the cabinet presented a little bit of a problem. The clear one is the one where the media is sucked into the gun, and it is soft and bendable. The red one is the air supply, and it is hard plastic and doesn't bend well. We finally found a length that was not getting in our way, and we wire tied the two together to give us more flexibility when using the gun. As we start using it we may have to make adjustments to this and some other stuff.
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  #15  
Old 10-17-2018, 06:03 PM
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Alright, there is only one system left, and that is the system that lets the media get from the hopper to the gun. The way HF did it was they had a long metal pickup tube that runs down into the hopper and you have to keep the media deep enough so it will not suck dry. I think I had like 20 pounds or more in there to make it work.


Dan found a system from IDS (here is a link to their site)

https://www.idsblast.com/sandblasting-supplies

that you install on the very bottom of the hopper, and sand is sucked down into this special valve setup, and then fed to the gun. It has an adjustment on it so you can decide how much sand you want to feed the gun.

Here is what you get when you buy it:
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  #16  
Old 10-17-2018, 06:12 PM
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The idea is, this unit has 1 inch npt pipe threads tapped into the top of it, and some people use a 1 inch pipe reducer to screw in there and to hold it to the bottom plate of the hopper. However, since I work in the marine business, I knew we had 1 inch through hull fittings in bronze at work that would work better. It has a smoother top, so sand can flow over it easier, and it has a smooth bore, for the same benefits.

All we had to do was drill a 1.25 hole in the stock HF trap door, install the through hull fitting, and then screw the IDS valve to it. Then, we ran the clear hose through the side of the cabinet and to the hand held gun.
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  #17  
Old 10-17-2018, 06:20 PM
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Here is the cool part about the IDS valve system, vs the HF suction tube. Instead of needing 20+ pounds of media in the hopper, you can use as little as TWO CUPS of media ! It wastes so much less and should run so much cleaner.


We still have to install the new glass I bought on the viewing window and the cabinet light, and also install the new gloves. Also, we are going to add extra latches to the door to make it more airtight. But aside from those small items, we are pretty much done.

Now, what did it all cost? I really don't know exactly, because we have done this job over about 6 months and I forget. But, we kinda ran it through our heads, and we figure $450-$500. That might seem like a lot, but if this cabinet is now usable, and doesn't coat us with dust, it will be worth every penny. I will know in the next week or so how it works, and will let you all know.

There are companies who sell a fairly complete kit to do what we just did, and they get about $450, but it doesn't contain all the parts we used by buying the stuff separately.


Hope this lengthy thread helps someone else. I am going back to work tomorrow for the first day in two months, and I wanted to get this thread done while I had the time. Now I need a nap. lol
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  #18  
Old 10-17-2018, 08:14 PM
phil cottingham phil cottingham is offline
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Is the HF cabinet large enough to get a wheel in?
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  #19  
Old 10-17-2018, 09:42 PM
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I don't think so, Phil. I've put intakes and parts like that in there, but a wheel might not fit through the door opening. But I have never tried.
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  #20  
Old 10-18-2018, 04:20 AM
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Great write up Don
Thanks for taking the time to fill us in on the process and parts list.
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