air compressor to run air chisel

[Poly Hive]

Just bought an elderly cottage which someone has painted with a plastic type paint. It seems to be "chipable" if that is a word and I am hoping that an air powered chisel will take it off. Yes slow but I am retiring so will have time.

What volume of compressor does the panel think suitable?

Thanks in advance.

PH

 

[Burnerman]

Air chisels use a huge volume of air, so really you'll need upwards of 12 cfm delivery and a 100 litre tank....otherwise the compressor will hardly switch off!
You could try one of the smaller electric breaker drills with rotor stop I guess - it just depends on how chippable the surface is, and you won't want to go too deep!
John

 

[Poly Hive]

Hmm... looks as if an electric tool would be a better option. I had my suspicions.

Any suggestions for an electric tool please?

PH

 

[Burnerman]

Have you seen this Thursday's Lidl offers? There's a drill / breaker for less than £40 - it could be worth a punt. Usually there's a 3 year warranty, too!
John

 

[Deleted member 174758]

I'd suggest that you need what is sometimes called a "scabbler", or more correctly a pneumatic needle scaler, to tackle the job rather than a chisel. The professional versions of these tools, such as the Trelawny, use 3 to 5 cfm at 80psi so you'd need a minimum of 15 to 20cfm FAD compressor with a 250 litre tank running at 125 to 150psi (so with 3cfm being approximately 1.4 litres/second it would give you about 5 to 7 minutes between the pump cycling) to get anything like a reasonable duty cycle - probably why the guys using them regularly either own or hire a portable (trailered, diesel) compressors such as one by Broome-Wade or Hydrovane. Personally, I'd hire. The heavy duty kit like Trelawny is far superior to cheap DIY kit (faster, less vibration). Another way might to hire an electric scabbler with carbide grinding heads

 

[Poly Hive]

Having spent some 28 years offshore I can safely say I know needle guns...lol...

I will price it up as I have a good few square meters to clean off. Not to mention some scaffold to buy/hire.

Ph

 

[foxhole]

If you are working on small areas at a time then a tower might be a cheap option. Though working offshore for 28 years you must be loaded.

 

[Deleted member 174758]

Or maybe a cherry picker? Just remember to get yer Petzl!