CTL26 for sandblasting
- Thread starter Sjur
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- Jan 22, 2007
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If this is a conventional sand blasting cabinet, the majority of your abrasive media should be falling back into the bottom hopper of the cabinet. The vacuum helps improve visibility by drawing the lighter airborne dust toward the cabinet exit. It also helps reduce the mess around the cabinet by establishing a negative pressure differential to negate the amount of pressurized air being injected into the cabinet from the spray nozzle.
Ideally you will want a primary filter right inside the cabinet to reduce the amount of large particles from getting into the vacuum system. It should be coarse enough that it doesn't foul rapidly.
Your Dust Deputy is a good idea for capturing much of the abrasive media. Keep in mind that a cyclonic separator functions by spinning the heavy particles toward the outer walls of the separator. This may tend to wear out your dust deputy faster than normal.
Similarly, the high speed air flow in your hoses with abrasives will wear your hoses faster than normal. Make sure you are using a collection bag inside your CT26 so you don't abrade the interior of the vacuum canister. The speed of the air inside the canister will be much lower than in the hoses, so there won't be as much abrasion taking place.
By the time your vacuum air reaches the HEPA filter of the CT vac, most of the abrasives will already be removed. The filter will do a good job getting the rest.
By the way, my old sandblasting cabinet (shown on the right below) didn't have an active vacuum system. It worked just fine with a simple air filter on a vent. The drawback was that the positive pressure of the incoming air made dust leak out at all of the joints.
The new cabinet is designed for an active vacuum system, but I still haven't connected it.
[attachimg=1]
Ideally you will want a primary filter right inside the cabinet to reduce the amount of large particles from getting into the vacuum system. It should be coarse enough that it doesn't foul rapidly.
Your Dust Deputy is a good idea for capturing much of the abrasive media. Keep in mind that a cyclonic separator functions by spinning the heavy particles toward the outer walls of the separator. This may tend to wear out your dust deputy faster than normal.
Similarly, the high speed air flow in your hoses with abrasives will wear your hoses faster than normal. Make sure you are using a collection bag inside your CT26 so you don't abrade the interior of the vacuum canister. The speed of the air inside the canister will be much lower than in the hoses, so there won't be as much abrasion taking place.
By the time your vacuum air reaches the HEPA filter of the CT vac, most of the abrasives will already be removed. The filter will do a good job getting the rest.
By the way, my old sandblasting cabinet (shown on the right below) didn't have an active vacuum system. It worked just fine with a simple air filter on a vent. The drawback was that the positive pressure of the incoming air made dust leak out at all of the joints.
The new cabinet is designed for an active vacuum system, but I still haven't connected it.
[attachimg=1]
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Yeah, it's a conventional cabinet like the ones you have pictured. Currently planning on how to build one.
Come to think about it... What if I drop the dust deputy and instead just put a course and a HEPA filter sandwhiched in a box right outside the cabinet that the extractor hooks on to. I'll have the box openable so I could clean the filters. That way the dust won't abrade the hose. Thoughts?
Come to think about it... What if I drop the dust deputy and instead just put a course and a HEPA filter sandwhiched in a box right outside the cabinet that the extractor hooks on to. I'll have the box openable so I could clean the filters. That way the dust won't abrade the hose. Thoughts?
- Joined
- Jan 22, 2007
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There's no problem with using the dust deputy. It's a good idea. I was just letting you know that it might wear faster than expected. But that also depends on how much you use the cabinet.
A good idea would be to add a simple filter to the inlet just like my old cabinet that doesn't use a vacuum. It has a small air filter similar to what a small engine (lawn mower) uses. Your vacuum hose will likely be the first thing to wear out, and a filter like this will help keep more of the abrasive out of the air stream.
A good idea would be to add a simple filter to the inlet just like my old cabinet that doesn't use a vacuum. It has a small air filter similar to what a small engine (lawn mower) uses. Your vacuum hose will likely be the first thing to wear out, and a filter like this will help keep more of the abrasive out of the air stream.
