Looking for some feedback on my tube bender from those who have made them or attempted to make them. I'm on my 2nd mandrel setup that I switched to a follow pressure bar style and had good success but on my second tube I ended up with a little bit of wrinkling on the inside (mandrel radius side) of the stay radius. 4.250 CLR with the Nova .75 29er S-bend stay. .020" wall. They were filled with ice. Radius' were milled pretty much dead on...tight suction type fit. There is no wiggle room anywhere in the assembly that I can find. I suspect I didn't secure the tube well enough the second time and it slipped? Otherwise they look awesome..perfectly round all the way around, look nearly perfect. Any thoughts? Thanks!

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Here's my link to my flickr page on the build: https://www.flickr.com/photos/109733516@N07/sets

Shawn Pedersen
Seattle,WA