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the sandblasting capacity of a compressor

S

squirrel

Joined
Sep 27, 2007
Messages
132
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Location
Belgium
Hello,

I have a compressor and I tried to do some sandblasting on wood but it did not work: seems the capacity was not big enough.
What capacity should a compressor need to have to do heavy sandblasting?
Thanks for answering
Squirrel.

ps Do I have to use my real name also when I'm not an American?
It is not that I do not want to use it but it is so much more fun to use it and ... I see still a lot of people still use it as well
 
Hello,

a common advice is an airflow of 36 m3/h (usually the compressors measure that at the input, you get less at the output except for screw compressors which is probably not the right equipment for your need) should be fine.
The tank capacity has not that much importance, it's the airflow.
I'm extensively into sandblasting and bought recently a 43m3/h, 5.5HP compressor. what a blast (pun intended) !!! I can sendblast at 7 bars with a 5mm nozzle without problems.
(if I'm right with the conversion, 36m3/h=22 cfm, and 43m3/h=25 cfm)
if your compressor has not enough power, I recommend the speedblaster gun. it has small needs in term of airflow, and has a built-in abarasive tank which gives a regular output. of course I wouldn't qualify it as a "heavy sandblasting equipment" (needs frequent refill)

Pascal
 
squirrel said:
ps Do I have to use my real name also when I'm not an American?
It is not that I do not want to use it but it is so much more fun to use it and ... I see still a lot of people still use it as well
Click to expand...

Being american has nothing to do with it, but you are grandfathered in and only need to change your name if you want to (or if you are Tom Boonen). After a certain date, all new applications had to be with thier real name.
 
Last edited:
Hello,

I understand I onLy (did you by accident forgot the L?) need to change if I want yo.
Ok! Then I do not change because I like nicknames
Squirrel
 
THANK YOU, Pascal!!!
Very usefull information.
Are you French or from Wallonie in Belgium?
You have a French name anyhow
Squirrel
 
you need to know the requirements of your sand blast unit and see if it your compressor meets that requirement. If you are doing large jobs you need a screw type compressor the kind you see being used on construction sights, they produce endless air supply.
 
Hello Squirrel.
yes I'm French. before byuing my new compressor I made sure it had enough airflow to cover the highest needs of Mathys blasters, including "sableuse a pression" (maybe that's what Steve is mentioning: pressure pot-in line: the one where air is injected into an abrasive tank, and air+abrasive come out together. much more efficient)

RJones, I had considered screw compressors. beside their much higher price, they have a big disadvantage for us turners: they need to run on a very regular basis. (for example each day). They are not designed to rest unused for 2 weeks. This is not commonly advertised but after extensive discussion with my industrial supply dealer he explained me the screw (I was really ready to buy a screw one) was really not the route to go. they make sense in an industrial environnement, but not for my case where I sandblast a piece at best once a week. I bought a heavy duty rotary compressor, and so far it behaves quite well.

Pascal
 
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