Polishing runners

[krazymonkey]

I'm polishing up my TPI setup and I'm having a little trouble getting between the runner tubes. Any ideas on an easier way to do this? It's hard to apply any pressure to sandpaper there.

[karlseus]

try a finger nail paper file. like people use to manicure their nails.

[krazymonkey]

Wow, great idea. Never would have though of that one. But how do you tell what the grit is on those things?

[cheyenne383]

It's rough grit,if that doesn't work, also try a die grinder with a sanding tip. You can get different grit #s on those, not sure if you can with the nail files.

[krazymonkey]

Yeah, I'd already figured about die grinders. I have been using a dremel. Only tips I could find that would get me where I wanted were the diamond tipped grinders, but at $6 for 2 and so little use before they are burnt, it's getting a little expensive. I was just hoping there would be something more effective and less costly.