Assuming you don't want to buy a lathe, I would order one of these:
DIY 1
DIY 2
While you are waiting the several weeks for them to arrive, pick up a driver:
1.4 Amp
1 Amp Flat Regulation
And an emitter:
XM-L
XP-G
And some
thermal glue
Some
DeoxIT is good to use on all of the threads too.
With either order you could pick up some spare tail boots and o-rings. And if you don't have a soldering iron you will need one of those, or find a friend with one.
Both of those hosts take a 17mm driver and a 14mm round emitter base.
I have used both of those host for builds with an XP-G and an XR-E, but haven't tried the XM-L. If you do, I would love to hear how it turns out. My favorite is the first host option with the XP-G and the 1.4A driver. It has a smooth reflector, but no rings. It is a great mix of throw and flood and can run on high without burning your hand. Shiningbeam does sell a
2.8 amp driver that could be used with the XM-L, but I don't know how well that would work. I may give that a try next. :devil:
Hope that helps.