# How do you roll over a tube edge? **URL:** \ **Category:** Shift518 Automotive\ **Created:** [November 20, 2009, 8:36am UTC](https://forums.speedlife.net/t/how-do-you-roll-over-a-tube-edge/248505 "2009-11-20T08:36:20Z")\ **Posts on this page:** 1\ **Showing post:** 28
**Author:** ![votblindub](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/votblindub/32/6280_2.png) [@votblindub](https://forums.speedlife.net/u/votblindub)\ **Post date:** [November 24, 2009, 5:34am UTC](https://forums.speedlife.net/t/how-do-you-roll-over-a-tube-edge/248505/28 "2009-11-24T05:34:08Z")
> [@What Should It Be??](https://forums.speedlife.net/t/what-should-it-be/26269/40): > > You need some very rigid machinery, machined dies and forms, and specific rollers to spin titanium. I work with titanium often enough that I have some specific tooling, but even I wouldn’t waste my time spinning it unless it was something super specific. I mostly machined/weld it. > > And the color effects are anodized, not burned in. Use DC voltage in the 24-120V range and cathode/anodes in solution. Actual voltage determines color. Heaps of info on anodizing titanium online. Adam, this may sound like a completely moronic question, but I have to ask because I simply dont know. Can a tube bender/expander machine be used to make a somewhat of a rolled tip? The flex joints on my car’s exhaust are not flex pipe, they are ball and socket type. Would it be possible to use the piece of titanium pipe in the same machine to kinda push the edges of the pipe inward and round them off same as you would making the ball and socket type flex joint? Does titanium work require it to be under certain conditions? Such as heating it prior, or cooling it prior, or using some kind of special lubricant? Is it more or less malliable than say steel you use on exhaust piping and is more likely to deform/fold/crack/tear? --- _[View the full topic](https://forums.speedlife.net/t/how-do-you-roll-over-a-tube-edge/248505)._