So I'm tempted to challenge myself, at risk of buggering up my tin top flywheel.

I have a mill. I don't have a rotary table. Or a flywheel cup grind wheel. My local flywheel place wants £60 to resurface the wheel. Not a bad price, a bit steep maybe but i'm happy to support a local specialist before they all vanish.

However for ~120 I could get a rotary table, convert it to a 4th axis using my spare steppers and cup grinder and give it a try on my mill.

I just don't know whether my mill is stiff enough, or if I'm just giving myself another project I never finish

Anyone tried it before?

Definitely buy the bits and do it yourself, further down the road you will want to lighten a flywheel and find other uses such as skimming discs to minimum size to save weight.

I skim and lighten flywheels in my lathe using carbide to remove the bulk of the material then finish with a grinder.

[Edited on 25/4/20 by mark chandler]

Sold, to the man who had a compulsive tool purchasing problem 😂

Good man, I like to buy tools as well

I do have few I've only used for one job, but I still enjoy buying them.

I've not done flywheels, but it seems you'll find other jobs to use the tools you buy for so go on and have a go.

Bahh having taken the old clutch off there's absolutely nothing wrong with the fly - it's spotless after 175K miles - not even a wear step lol.

Ah well, tool order on hold. Might still get the RT for a 4th axis soon