I will admit I have no idea what a razor saw is. Back when I first started infinity I figured I needed something to cut into tabs with - using nippers can actually displace legs/ feet sideways, damaging the mini. My first pressing need for a saw occurred when I got an Aquila Guard HMG to convert one of my ORCs, however. I needed that arm socket sliced off and had no proper equipment to do it. I heard of Knew Concepts from some internet jeweller's forums here and there (I work on fountain pens as well), and they seemed a reputable company, so I emailed their customer service address with images of the mini, what I wanted to do, and what the minis were made of. Brian Meek of Knew Concepts assisted me, and after some back and forth he recommended me the following: Knew Concepts 3" Mk.IV Heavy Duty Fret Saw with Lever Tension #2/0 blade And a Guillotine clamp. The clamp helps hold the mini in place when I am sawing, and the wooden layer on the jaws prevents pressure from deforming the pewter. The blade size in question may be a little thick though - it can erase detail if you are not very good at sawing, or if the area you are cutting through contains high amounts of sculpted detail. Brian did mention that going one size down was possible, so you might want to do that. They have a sizing chart on their website. I've had my saw for a while now, and other than initially not understanding how it worked, there have been no more issues. It's made well, sturdy, and does what it's supposed to do. The only downside is a high initial investment - but it was worth it to me as a long-term thing.