Hello everyone.
I think this might be my first post. I'm a long time reader though, so I feel like I'm part of the community. Even if my stats don't show it.
I've built a handful of frames for myself over the last few years. And I've been using some of the basic tubesets that I think are vanilla 4130 butted materials. Things like Columbus Zona, and Some Nova Tubesets. Great tubes for learning. But I recently started on a new frame and decided to step up to a Columbus LiFe Niobium tubeset. All the trade names are a bit lost on me. But from my years of fabricating on a bunch of different materials, this stuff feels alot like stainless steel in it's "hardness". It seems much harder and tougher than the standard 4130 tubes. And is causing me some tooling problems.
I've been using a tube notcher and hole saws to cut my tubes without any trouble until now. But the first time I tried to cut a 34.9mm Niobium tube I was shocked at how hard the material was. I had a fresh Milwakee hole saw in my nother and it would hardly scratch the surface. I pushed so hard that I ended up damaging the tube. I could not get the saws to cut into the surface of this stuff even with really extreme amounts of force. I ended up damaging a downtube.
I'm looking for some advice for cutting these harder materials. I'll probably go back to miter templates and hand grinding with files to be safe. I don't want to waste more precious tubes.
Here is my setup. Please advise...
tube notcher.jpg
-Ken
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