Bicycle Mechanics - Fork steer tube too long... Cut it?

So I bought some Answer Sythe CF 20" forks for my BMX build. The steer tube is like ~3 or so inches too long. Last bikes I built had the old school threaded steer tube. So with the new threadless style, is it common to just cut the steer tube? Is this done via pipe cutter and just spin it around and keep tightening it until the cut is made? Any advice on this project is appreciated.

I was thinking of cutting it a bit longer than needed. Figuring a bit longer is better than too short (useless)? Then maybe I'll look for some small spacers to fill any little gap.

Am I on track or way off here? Thanks!

Yes, cut it. The cut is usually made with a hacksaw.

EDIT- Here (http://www.parktool.com/products/detail.asp?cat=50&item=SG%2D6) is an example of a saw guide that lets you make the cut straight.

Yes use a pipe cutter, it should be $10-$15 at the hardware store. It will leave a ridge at the edge that will need to be filed down though. Your LBS should have headset spacer kits for a few dollars.

Thanks a lot guys. That's what it looked like to me, but thought I'd check first before cutting away. Much appreciated!

It doesn't need filing with the pipe cutter. It just needs deburring with the deburring tool that is a part of every pipe cutter but is apparently a well-kept secret.

http://www.ted-kyte.com/3D/Pictures/Pipe%20Cutter.jpg
That triangular thing on the back there is a flip-out deburring tool. Much faster and cleaner than a file.

Sweet! I already have one of those.

But loking closer at it, the steer tube looks like an aluminum/epoxy/aluminum layered tube. I'm sure the pipe cutter will work just fine and make a clean cut.