felt bobs and greaseless not working for me

[alabama_lowlife]

i'm trying to polish a throttle body for a guy and i've tried a couple times to load some greaseless onto a felt bob and use my flex-shaft, but the greaseless just isn't working like it does on a wheel. i let it dry for several minutes just like on the sewn wheels, but when i try to do anything with it, it just makes a smeared mess instead of removing any material. any thoughts? i've been using emory and it's working, but takes forever to get the casting out.

[mpierich]

If it "smears" it's probably not really dry. It can look dry on the outside but not really cured. I use an old hair dryer to make sure. Be sure to let it cool some before you use it - the heat may leave it a little soft.

Can't think of another reason for your problem. One thing I do is to cut slits in the bob, lengthwise with a sharp knife or hacksaw blade - not real deep, but enough to give the surface some tooth for the compound to stick to.
Maybe your greaseless is sliding off the bob.

[jrow]

alabama_lowlife,

mpierich: good tip on the felt bobs!

Try getting some 1", 1 1/2" or 2" buffs either treated or untreated and put greaseless on them. As far as the casting marks go. I would try a diamond finger nail file! It cuts aluminum real quick so be careful as to not put to much pressure on it. Finish that with 150, 220, 320 grit paper on a sanding block, then use your greaseless. Load up about 3 or 4 buffs with greaseless that way you will be able to work longer.

Let us know how you make out!

John