Okay this thread has gotten past the point I originally intended...
Lapping compound on plastic RC car gears, or even gears with a small face width isn't smart if you use a heavy lapping compound.
Remember there are hundreds of different grades of lapping compound varying in abrasiveness.
I just wanted to find a source on the compound itself. I found it and used it, and for my purposes it worked great.
I have talked to many engineers, and they suggested in many cases, when dealing with machined gears used in gearboxes, lapping compound can be used to help gears mesh better than they would otherwise in their freshly machined state.
I’m sure I will get hundreds of different opinions, but for this particular purpose when I used it I saw no negative effects while using the compound. If I do in the future I will let you guys know.
I just looked back on the technokats 6 motor drive train files from last year and noted Andy Baker's recommendations to use lapping compound. I may have this out of context, but I am pretty confident he used it for the exact same thing we did.
Quote:
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... Use lapping compound to help get the gears to mesh. Clean off the lapping compound and then grease the gears before operating under a load. ...
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Anybody else care to share their feelings towards lapping compound?