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Tool Talk Discussion Forum

Needle scalers work?

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G. L. Perry

12-30-2007 21:52:41




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Too cold to clean my tractors of paint and rust in winter. Chemicals need washing off, etc. I keep seeing these needle scalers advertised in mags. Prices are low to high. I got a cheap one that mounts on my muffler gun to try the method. Haven't been out to try yet. Anyone have one of these? and do they really work ok? I also have the knot brush for my small grinder, but it doesn't always want to take down to metal and not for small places. Basically wanted an opinion on the tool and if there are any tips using it?? Is the more expensive one REALLY any better? Do they wear out fast?

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TimV

12-31-2007 09:35:28




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 Re: Needle scalers work? in reply to G. L. Perry, 12-30-2007 21:52:41  
I"ve just got a Harbor Freight cheapie that attaches to a standard air hammer, but I"ve used mine a lot and am still on the first set of needles. Mine has proved extremely useful for taking off multiple layers of paint and scale, cleaning up welds, and also for many oddball jobs such as cleaning up a mortar mixer that I lent out and it came back full of hardened mortar, or cleaning out a big shop-vac I was given for free because it was full of caked-on dirt. In both cases, the needle scaler made short work of breaking up the gunk, and was MUCH faster than pounding and chipping, particularly given the close confines of interiors of the machines. Definitely a worthwhile investment if you are doing heavy cleanup or prep work. Like a lot of tools, I buy a cheap one and if I use it enough to trash it, I"ll spend the money on a better one. The funny thing about this is that a lot of my cheap tools (and the needle scaler is a good example of this) have held up well enough that spending the extra money on a name-brand one has not been necessary. I"m sure that if I used it all day, every day that I"d need a better one, but I"ve got many times my $15 investment out of this one, along with giving me capabilities I didn"t have before I bought it.

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Rtt

12-31-2007 09:13:05




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 Re: Needle scalers work? in reply to G. L. Perry, 12-30-2007 21:52:41  
I have used needle guns in industrial maintenance for years. A good one uses alot of air and you need an inline oiler. The residue gets pounded into the surface you are scaling and we use hot thinner to clean prior to applying an antioxident.They are not for gauge metal or tin that may be weak or thin.



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Red Dave

12-31-2007 05:32:24




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 Re: Needle scalers work? in reply to G. L. Perry, 12-30-2007 21:52:41  
I have one, great on heavy rust build up and multiple layers of old paint on cast parts. Not so much for sheet metal.

Loud! you will need eye and hearing protection.



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RustyFarmall

12-31-2007 05:18:30




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 Re: Needle scalers work? in reply to G. L. Perry, 12-30-2007 21:52:41  
I bought the cheap one from Harbor Freight. It is a godsend for removing heavy build-ups of rust and thick layers of paint on cast iron and steel. It is NOT much good on sheetmetal, but I didn't expect it to be. I've used and abused mine quite a bit, and never had any trouble. I do recommend some sort of hearing protection and also eye protection.



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s.crum

12-31-2007 04:35:43




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 Re: Needle scalers work? in reply to G. L. Perry, 12-30-2007 21:52:41  
I use mine mostly on cast, works pretty good. I especially like to use it for deslagging welds on cast as this acts to peen the weld relieving stresses and reducing cracking.
Don't run one of these with out the needles being in contact with a surface or you will be buying new needles frequently.



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Chris(WA)

12-31-2007 04:07:38




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 Re: Needle scalers work? in reply to G. L. Perry, 12-30-2007 21:52:41  
They are slow and hard on the metal. That said they do work good on heavy scaled rust or to take slag off welds etc. I used mine to prep rusted rims and heavily rusted cast. It would have tore up sheetmetal. A DA sander is the tool for prepping smooth painted surfaces like the tin work.



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