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Question: Should I use a sisal wheel for all of these? 8"? Double wheels?
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Yes. If you can spin double 8" wheels, go for it. I tend to stick with 6" wheels on a 3650RPM buffer. That nets me a surface feet/min speed in the neighborhood of 5700. I usually stack 2, but will go to 1 if the piece has tighter areas a stacked set won't get in to. I'd say 80% of my time on a piece (afer sanding I mean) is doen with a sisal wheel and black compound.
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Question: This is a labor of love, for my personal bike, not for any profit. Should I go all the way from 80 to 400 before moving off the greaseless?
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Depending on the part, I sometimes stop as low as 240. Sometimes I start and finish with 400. Depends on how much material I think I need to remove to smooth out the part. I usually hit at least 320 before I start buffing.. if you see scratches or pits after moving to the sisal wheel, tough it up with the greaseless again.
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Question: Does the greaseless make the wheel look like a big sanding drum or does it load like a compound? What I'm getting at here is how much do I put on each time and how do I know when I have enough?
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Yeah, kinda. It's usually a kind of orangy-rust color (my 400 is black tho) and ya put it on a spiral sewn wheel. I put enough on to cover the working part of the wheel and let it dry for 5-10 mins before I use it. You can tell if it's too thin or too thick. If I need extra cutting action, I'll apply a 2nd coat after the 1st has dried.
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Question: After the Black on sisal, do I immediately go to white on a spiral? White on a loose cotton? Black on spiral?
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That's a personal preference. I usually do sisal/black, spiral/brown, loose/white and call it good. Today I tried going right from black/sisal to loose/white and had pretty good results. Try different methods and see what works for you.
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Question: Do I use any of the colors I have past white on these parts?
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Can't answer this one. I don't have anything finer than white..
As for being on track, yeah I think you're headed the right direction. The only advice I might offer is to go slow, go slow, go slow! You can always remove more material, but ya can't add it back so easily.