Pie cuts

9 LIVES

9 LIVES

Demolition Expert
What is the safest way to make pie cuts safely on twin turbo tubing?
 
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I always used a bandsaw. Set angle. Make first cut. Spin 180 and cut again
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Chop saw would also make quick work of the cuts with consistent angles. Obviously the more cuts, the better the flow through the piece, but a lot more welding. There was a calculator somewhere to figure out the dimensions and angles to make a bend on a given radius, although a little trig will do it too.
 
I dont have a band saw, and my chop saw doesn't cut very straight, so I just use a 4.5" grinder and a thin cut off wheel.
 
I have a really nice bandsaw....but once pieces are lets say 5-6" of pipe left, it will spit the piece out (not enough clamping area) I can see if you have 4-5 feet of pipe that would be easy. But once you get down to the last 6" of pipe it gets dangerous trying to get the clamp to hold the pipe.
 
9 LIVES said:
I have a really nice bandsaw....but once pieces are lets say 5-6" of pipe left, it will spit the piece out (not enough clamping area) I can see if you have 4-5 feet of pipe that would be easy. But once you get down to the last 6" of pipe it gets dangerous trying to get the clamp to hold the pipe.
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What we've found that works pretty well is to use a short piece of same diameter material on the other end of the clamp. That way the clamp thinks there is a full piece in there...
 
That way the clamp thinks there is a full piece in there...[/QUOTE]


Hmmm a clamp with a brain. The possibilities are endless now.
 
MAXTORQ said:
Why pie cuts? Why not short radius pipe?

Or am I missing something?
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welders like to weld.



...There are situations where a series of pre-bent pipes welded together may not be as optimum a pie cuts, however with the availability of donuts and mandrel bends nowadays I don't see that particular situation being very prevalent.
 
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