Now I'm not saying this is easy, it's something you have to reach yourself to do, but if you practice on a flat worktop first, you should find you can, in time, grind flat a spindle tip or grub screw base, ready for polishing. Physical trainers call it establishing a 'muscle memory'...I call it 'practice makes perfect'.
I use a small fine knife sharpening stone that was actually intended for the initial work on a cut-throat razor. Not fine enough for the final edge on razors you actually finish these on a canvas cloth impregnated with fine carbon dust, a 'strop'. But they do a good initial job on spindles too. You want 1000 grit, anything else is too coarse...try a 3000 if you can find one.
This Trudex spindle has a rounded top..it's harder to do but it can be done with patience
And if you reverse the grub screw in its boss, or in the case of a Perfection Flick Em which has no boss, screw it into a bit of hardwood with a small pilot hole drilled first, you can hold it firmly enough to do that too:
This Trudex grub screw had a huge dimple in the middle. That has been 99% polished out with a stone and is now ready for polishing to a high finish with cloth
Having removed any damage you can start working on a slight radius on the grubscrew, before polishing both out completely.
I use Solvol Autosol and then Brasso to finish, but I am sure there are other polishes that will do too. I use a strip of cloth, a seam from a tracksuit preferably and hold either end of a strip and 'buff' across the work piece. Then for five minutes you polish in a small circle. The above images had just 30 seconds circle polishing, so you can see that it's possible to get a very good finish indeed.
If you've bought an absolute nightmare, you could just polish the spindle tip flat and put a new, rounded tip, grub screw in instead:
http://www.screw-shop.com/standard-stoc ... t-pack-100
Polish as before and it will spin and it will fish.
