Best tool to cut duct work


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Old 02-27-07, 06:28 PM
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Best tool to cut duct work

Hello,

I need to cut a hole in my duct work to add a vent and I am wondering if anyone has any recommendations on what kind of tools would work best?

Thanks,
Irishmen
 
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Old 02-27-07, 08:31 PM
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Duct Cutter

Irishmen,
What type of ductwork are you cutting? If it's the standard, garden variety galvanized steel, it's hard to beat a quality pair of aviation snips:
http://www.mcmaster.com/ page 2264.

Less than twenty bucks and quite good at what they do.
 
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Old 02-27-07, 09:44 PM
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Wink

like said: A quality pair of aviation snips:. After you lay out the hole to start it .Use a screwdriver at a 45o to cut the duct . Tap the edge with a hammer to cut a slot across part of the hole then use the snips.
 
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Old 02-28-07, 10:41 AM
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Iv'e used a "roto-zip" tool
 
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Old 02-28-07, 02:56 PM
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Snips are pretty much the standard way of dealing with tin.

I find that aviation offset snips that place the handle slightly higher off the surface are a bit easier to control than regular ones.
One way of starting the cut is to drill a series of small holes inside of the waste piece as a place to start.

http://www.doityourself.com/invt/6869457
 
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Old 02-28-07, 04:23 PM
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I'm with GregH. I have a pair of 9" Prosnip Right Offset snips that work great for keeping your hand away from the sharp edge as you're cutting, because your hand is a bit higher than with normal straight, left or right snips.

The offset is the key. IMO, Prosnips are better than Wiss.
 
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Old 02-28-07, 06:15 PM
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I'll have to look for Prosnips................not a well known brand around here.
They are worth a try but a new pair of Wiss that gets an occasional shot of WD-40 cut like scissors through paper.
 
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Old 02-28-07, 06:32 PM
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There's the problem. I let my Wiss snips sit in the rain one too many times.

I looked at the Wiss offset snips today and noticed that while the head is offset, the handles are still straight. The Prosnips pair that I have have a offset head AND a slightly curved handle that gets your knuckles farther away from the workpiece. So that's another bonus.
 

Last edited by XSleeper; 03-01-07 at 11:40 AM.
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Old 03-06-07, 05:46 PM
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nothing better than a screwdriver and a hammer

I watched a tin knocker install a new carrier oil burner for me and was amazed how quickly he cut out a rectangle with a hammer and a screwdriver. Red and green offset Wiss snips were the ticket for circular cuts. I love watching guys that are pros do their thing. One thing I do know that sharp edges on ductwork cause hands to bleed pretty fast if not careful. JB
 
 

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