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I realized that I should've ended this thread with my last and best experience with the milling of the radius in the flywheel. I never did find what I considered to be a really smooth milling process. However, by using a high quality, small 1/8" milling bit and taking very small cuts, I found...

Today I tried the new HSS bit. I don't have a collet to fit this size bit so I had to chuck it my genuine Chinese drill bit chuck that HF generously supplied with their mill. Ugh. The results were significantly improved, though still not completely chatter free. I ran the bit with minimal...

Good question - climb or conventional. I've given that some thought as I'm cutting a channel in a radius. So it's really both climb milling and conventional milling I guess. I was thinking that perhaps that milling a channel is both, and that the inside radius cut is going at a different...

Lots of promising suggestions. Thanks guys. I've fiddled with my mill gibbs a lot to get them as precise as I can. I've checked X and Y axis and for play as precisely as I'm capable given my tools, and there is no discernible play in the entire setup when I hold the X and Y and rotary table...

Thanks for all the input guys. I've ordered this cutter and will try with very shallow cuts and drill starter hole first. I'm stuck with the 1018 for now. As soon as the new bit comes, I'll post an update. Love you Amazon Prime...

Thanks guys. I'm trying to mill 1018 steel. Also, I am locking Z also. I'm thinking maybe I need a high quality mill bit. I'll try a high quality 2 flute.

I'm a novice attempting to make a radius channel in a flywheel. Mill is a HF bench top mill/drill. Inexpensive imported 4" rotary table but with slack adjusted out, with home made but sturdy adapter plate to mount 3" 3 jaw chuck on to rotary table. Everything securely mounted, bolted...