G'day Mike:
Very interesting but the M feedscrew I had to duplicate was examined under an
optical comparator and there was no doubt the thread of the original 1892 part
was a 45ยบ buttress thread. The depth of the thread is only 0.007 so the lathe
setup is crucial. I will have to check the
:
From: clockworkh...@aol.com clockworkh...@aol.com
Subject: Re: [Phono-L] Edison feedscrew on mandrel shaft... Triumph, M, Home...
To: phono-l@oldcrank.org
Date: Monday, July 4, 2011, 7:03 PM
G'day Mike:
Very interesting but the M feedscrew I had to duplicate was examined under an
optical
of worms hereby opened.
John Robles
--- On Mon, 7/4/11, clockworkh...@aol.comclockworkh...@aol.com wrote:
From: clockworkh...@aol.comclockworkh...@aol.com
Subject: Re: [Phono-L] Edison feedscrew on mandrel shaft... Triumph, M, Home...
To: phono-l@oldcrank.org
Date: Monday, July 4, 2011, 7:03 PM
3 matches
Mail list logo
