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  #1  
Old Thu 25 November 2010, 01:37
JonnyRizla
Just call me: Jonny
 
Cape Town
South Africa
flattening the pipe ends

Hi all, two things I've been wondering about:
1: why are the pipe ends for the cross angle brace, the low longitudinal, the vertical bearer and the long angle brace all flattened?
2: How does one go about flattening the pipes if this is indeed necessary.
Thanks for any advice, Jonny
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  #2  
Old Thu 25 November 2010, 02:02
Alan_c
Just call me: Alan (#11)
 
Cape Town (Western Cape)
South Africa
Send a message via Skype™ to Alan_c
They are flattened to make the welding easier, if they are just cut at an angle when the pipes are joined there will be big holes on either side of the angled piece. There are two options to give a better joint - cut a fishmouth bevel - quite complicated, or flatten the ends slightly to reduce the width of the pipe to have less open space - very easy if a bit crude.

It depends how "fancy" you want to get? There is software on the net that can generate a paper pattern of the joint so that you can grind the fishmouth bevel on the end of the pipe - takes some work but gives a nice finished result.

To flatten the pipe? - a big hammer and something to work as an anvil and a little bit of creative bashing.
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  #3  
Old Thu 25 November 2010, 02:08
Alan_c
Just call me: Alan (#11)
 
Cape Town (Western Cape)
South Africa
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See this thread for info in pipe beveling.
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  #4  
Old Thu 25 November 2010, 02:27
KenC
Just call me: Ken
 
Klang
Malaysia
Or just flatten it with a big heavy vice.
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  #5  
Old Tue 14 December 2010, 02:52
JonnyRizla
Just call me: Jonny
 
Cape Town
South Africa
Thanks Guys, we ended up using the fish mouth program, and got a fairly neat result. I would say its worth the extra effort...
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