I used to use a chop saw (the abrasive wheel type) then broke down and got the dry cut saw. It fills that hole where you need a chop saw that doesn't wander, and does any angle you want. It's the perfect solution for cutting up to 4 inch square (or round) tubing. But, there is a cost. The blades are not cheap (about $100 a shot) and it costs 1/4 that or more to have them sharpened. My experience is having them sharpened isn't as good as a new blade.
You HAVE to really spray that cooking oil on the blade alot and make sure you take it slow. But, to give you an idea on how long a dry blade will last, check out:
http://devestechnet.com/Home/SuperJigPlansI used one blade to do this entire project and a little bit more. Was it worth it? That's just a matter of opinion, but each cut was precision with no sparks to speak of, and at any angle I chose. I got the Makita 12 incher, but the Milwaukee 14 incher is also highly rated. The reason it is not THE PANACEA for this, is the cost of the blades, AND if you have a gorilla chomping down during the cut, its toast almost right away. Finesse is the key to success when using it.
