Firebox Rust - Anyone use Black Diamond made from coal slag in the Red Bag?
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![[Hearth.com] Firebox Rust - Anyone use Black Diamond made from coal slag in the Red Bag?](/talk/data/attachments/158/158291-08a78602df941f472e1da07c4e1739e4.jpg?hash=df9ugzaQdv)
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Hello
Finally got the adapter and started blasting. Instructions say to open the Trigger valve all the way then open the throttle to mix air with the media. If I do that the nozzle cloggs quickly. Should I open the throttle all the way, then open the trigger fully. Then I can slowly mix the media in by closing down the throttle. Anyone have experience?
Harbor Freight 40lb Abrasive Blaster Item # 68992
Pic 1 shows front half of the burn pot support I blasted. It does a good job!
See Pic 2 with what I believe is in error circled in red.
Pic 3 - shows diagram of model with valves
Finally got the adapter and started blasting. Instructions say to open the Trigger valve all the way then open the throttle to mix air with the media. If I do that the nozzle cloggs quickly. Should I open the throttle all the way, then open the trigger fully. Then I can slowly mix the media in by closing down the throttle. Anyone have experience?
Harbor Freight 40lb Abrasive Blaster Item # 68992
Pic 1 shows front half of the burn pot support I blasted. It does a good job!
See Pic 2 with what I believe is in error circled in red.
Pic 3 - shows diagram of model with valves
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![[Hearth.com] Firebox Rust - Anyone use Black Diamond made from coal slag in the Red Bag?](/talk/data/attachments/158/158308-50f9933bea0a5bb6151f9d767549901c.jpg?hash=Y3ssWcw3g8)
![[Hearth.com] Firebox Rust - Anyone use Black Diamond made from coal slag in the Red Bag?](/talk/data/attachments/158/158316-5df1bf39ea0b42402525352715dcb55a.jpg?hash=9Vbpl_n4yt)
![[Hearth.com] Firebox Rust - Anyone use Black Diamond made from coal slag in the Red Bag?](/talk/data/attachments/158/158317-0326be9011d5032b5781cee1069a522e.jpg?hash=dM-AAwiz-h)
Last edited:
Hello
Maybe this video using the same model will answer the question?
I have the 40 gallon tank and a very similar air compressor made by Dewalt,
Maybe not. The video shows the abrasion valve on the bottom of the take being used to regulate the media flow. This can wear out the valve quicker. The throttle valve on the back of the tank should be used to regulate the air flow that adds more media. If you use the trigger valve or the abrasion valve, the meadia will wear those valves out, that is why it was hard to get going in this video!
Also I found there is a moisture filter for that can be added to the air compressor.
This guy has the same model and it clogged 9 times. He drilled the nozzle out, but that does not seem like the answer! I am convinced the instructions are wrong and you should start with the throttle OPEN not CLOSED!
Therfore, my suggested way, may be the best way? Any comments?
Maybe this video using the same model will answer the question?
I have the 40 gallon tank and a very similar air compressor made by Dewalt,
Maybe not. The video shows the abrasion valve on the bottom of the take being used to regulate the media flow. This can wear out the valve quicker. The throttle valve on the back of the tank should be used to regulate the air flow that adds more media. If you use the trigger valve or the abrasion valve, the meadia will wear those valves out, that is why it was hard to get going in this video!
Also I found there is a moisture filter for that can be added to the air compressor.
This guy has the same model and it clogged 9 times. He drilled the nozzle out, but that does not seem like the answer! I am convinced the instructions are wrong and you should start with the throttle OPEN not CLOSED!
Therfore, my suggested way, may be the best way? Any comments?
Last edited:
Here is a good video using a blaster.
However there is no throttle valve so the abrasion valve must be used to regulate the Media
He does mention to run it lean so it will not clog. This convinces me to start with the throttle wide open and then close it down to add media. That is the opposite of what the instructions state.
However there is no throttle valve so the abrasion valve must be used to regulate the Media
He does mention to run it lean so it will not clog. This convinces me to start with the throttle wide open and then close it down to add media. That is the opposite of what the instructions state.
Hello
The instructions could be more detailed!
However, thanks to you tube, I finally got the blaster going!
To make it work, I had to switch to the largest nozzle that came with the machine. Then I did have to close the abrasion valve down to limit the media coming out.
The best way to do it, is to open the throttle all the way and then slowly open the abrasion valve until just enough media comes out to get the rust off.
Also I set the 210 PSI compressor regulator to have the tank output at 120 PSI which gave the blaster the required 125 PSI to do the job!
Results are good - see last pic below!
The instructions could be more detailed!
However, thanks to you tube, I finally got the blaster going!
To make it work, I had to switch to the largest nozzle that came with the machine. Then I did have to close the abrasion valve down to limit the media coming out.
The best way to do it, is to open the throttle all the way and then slowly open the abrasion valve until just enough media comes out to get the rust off.
Also I set the 210 PSI compressor regulator to have the tank output at 120 PSI which gave the blaster the required 125 PSI to do the job!
Results are good - see last pic below!
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![[Hearth.com] Firebox Rust - Anyone use Black Diamond made from coal slag in the Red Bag?](/talk/data/attachments/158/158318-8fc5963082e76acdd879f267e12455bb.jpg?hash=jOWJc4QQVX)
![[Hearth.com] Firebox Rust - Anyone use Black Diamond made from coal slag in the Red Bag?](/talk/data/attachments/158/158319-5ed2f7ac903d9b94f9f24c47f18f15b2.jpg?hash=5kEhIFvKJD)
![[Hearth.com] Firebox Rust - Anyone use Black Diamond made from coal slag in the Red Bag?](/talk/data/attachments/158/158320-a3fd0934930fe7a5bb23fcc315f80b88.jpg?hash=r_IwaS2ln1)
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