Originally Posted by ApexAero
The only difference I can tell from what Jofo is doing is that the fan is a bit more steady on a lathe and a sanding block is a bit more gentle than a cutting bit..dude have you nipped the tip of a prop? I'll spool it up and touch the edge of the prop to a cement table to balance it at the field when I don't have a spare. (not recomended but it works)is my favorite comment
PS: the last one I did was an Eflite 70 cut to a 64 lander on a 1W30, mounted the impeller on a sunracer for trimming, talk about efflux!
The problem with using a lathe is the chuck. Unless you have an expensive "zero set chuck", most chuck's are off .003 to 020" off center. especially if it made in China. Now this my not sound like much, but it will set the rotor out of balance, plus the cutting tool bit will cause the rotor to chip. This is the reason I use a sero set chuck on a rotary table on a vertical mill. And, you can control the amount you cut off accurately. Yea, you can do it all the way mentioned in here. But you can also use a "C" clamp as a micrometer, just depends how accurate you want.
My 2 cents worth