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#14
August 31st 07, 04:31 PM
posted to rec.aviation.homebuilt
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Method for expanding tube ID?
In article ,
Michael Horowitz wrote: This is not an aircraft repair. I've got a piece of 4130 tubing, about 3" long, 3/4" dia and I'm trying to slip it over a like size tubing. Just because I'm trying to let friction do the holding, I'd like to remove as little metal from the external sleeve as possible. I made a slot in the tube and expanded it slightly with a wedge. I though maybe heating the insides would cause it to open like a clam. I could wedge it open and apply heat, thus deforming the tube. Other suggestions? - Mike At least for larger diameter tubes, you can buy a tubing expander from Harbor Freight -- and they work! 
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