Double chicken and egg

My spiral saw arrived at the weekend. Although it was dispatched the day after I ordered it, it took another 17 days to get here from Yorkshire. For some reason Business Post could not find the address. Have they never heard of Google maps ?!



Although it was only cheap it does seem to have pretty solid bearings so looks promising for routing. At 600W and revving at 30000 RPM it should rip through most things. I just hope my z-axis motor is strong enough to lift it at 1.6Kg. If it can't then I may have to counter-balance it with a weight and a pulley or else use a bigger motor like this one for example.



I don't have any torque data for it but, at 85mm diameter, it looks beefy.

I plan to make the extruder body by milling this material.



I don't know what it is but it seems very hard and rigid. My best guess is that it is some sort of epoxy type resin with possibly a metallic filler - it has a bit of a sparkle to it. I might be completely wrong though. Anybody know what it is?

The chicken and egg problem is that to make the extruder I need to use the router, but to make the router mountings I could do with using the extruder!