I have been reading the posts on tube bending, and had a few questions. I have never really looked into the process before but i have been thinking about buying basic equipment for some projects.
First most of you talk about $1000 machines that look similar to the pictures in the links above. Previously I had only seen something that looks like a bottle jack with a set of curved metal plates that push against a solid frame. Basically a 12 ton ram bends the tube against the frame. These units are only a few $100 at most and have adapters for sizes from 1/2 to 3inch.
what are the advantages /dis-advantages of those pictured vs the basic hydrolic ram design? I am not doing production work and would only be using it for the occasional project.
also I always assumed that minor errors in measurments could be corrected by cutting and welding and as long as you kept at least the minimum wall thickness in your welds and bends you should keep almost the same strength. Other than adding more work for yourself are there problems with that theory?
As I said I have never actually gotten involved with bending tube before, so and guidance that keeps me from buying a poor tool would be appreciated.
Thanks
Mike