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Suggest you use a FINE grit, like 600 or so if you don't have too much to take off. You want a good finish, then clean well. (VERY well!)
Bob Darrah
----- Original Message ----- From: "jesse farr" <jesse@jessfarr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Thursday, June 15, 2006 9:23 PM
Subject: [FlyRotary] Re: Front, Rear and intermediate housings
Get you a glass table top, about 1/2 inch thick, (or a piece thereof, the one I have is about 1" thick) put it on flat table, put a little valve grinding compound on it and rub your end and center plates around on all that until the surfaces are polished smooth. You have just lapped them suckers. If a machine shop surfaces them you probably do not have any nitrided surface left. IMHO.
jofarr, soddy tn
----- Original Message ----- From: "James Brewer" <alpha@concordnc.com>
I would like to know if there is a do-it-yourself way to lap the housings
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