Re: [ATM] Shaping a focuser board to match tube

["bill kocken" <wmkocken@hotmail.com>]

Sounds dangerous to me.  One possibility is to take a piece of scrap wood
and determine the angle by trial and error.  A safer approach is to wrap
sandpaper around a tube of the same diameter and sand the curve into the
bottom of the focuser plate.  This may take a while, but at least you get to
keep all of your fingers.
Bill Kocken
----- Original Message ----- 
From: "Dave Smith" <smithersscope@yahoo.com>
To: "ATMLIST" <atm@atmlist.net>
Sent: Monday, October 24, 2005 7:26 PM
Subject: [ATM] Shaping a focuser board to match tube


> Got a question for y'all...
> I'm going to build and mount a wooden based Crayford
> to a 5.25" metal tube (the son's 4.5" reflector). I
> have a 10" table saw. I was considering clamping
> guides to the table saw at an angle to the blade such
> that passing the focuser base across the blade would
> remove the wood to match the 5.25" tube OD. (one small
> pass at a time, of course.)
> I'm having a hard time determining the angle for the
> guides. Has anyone done this? I could just go trial
> and error, but I thought I'd try the smart route
> first...just ask.
>
> Anyone??
>
> Dave
>
>
>
>
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