At the last trade show Andrew was exhibiting at.......
At the last trade show Andrew was exhibiting at, he was asked his way of bending tubing without it kinking. There are plenty of way that this can be accomplished using ice, talc, sand,etc
When Andrew was having some plumbing renewed at his shop he noticed some long spings that the plumber used to bend the copper pipes. Andrew set about finding a minature set so that he could bend some silver tubing for a project. He did find some and here is his demonstration. Bearing in mind that he had not done this before, things didn't go too well for his first time.
You can buy the springs from:-