From: "Jim Miller" 
To: "Marco Miglionico" ,
        "ATM Archives" 
Reply-To: "Jim Miller" 


there are some companies around that do laser machining of a variety of
metals that will give a nice cut on material of that size but it ain't
cheap.

do you know anyone with a sheet metal shear?

how big is your scope? it wouldn't take much of a twist in the vanes to
give you more obscuration than 0.2mm if they have any width to them.

wire works great for me. i'm using 0.020" (~0.5mm) plain guitar
string. that's holding up a 18oz, 3.5" minor axis secondary assembly
nicely.

jtm

----- Original Message -----
From: "Marco Miglionico" 
To: "ATM Archives" 
Sent: Sunday, March 09, 2003 1:01 PM Subject: ATM Spider vanes.



Hello list.

Has anyone gone as thin as 0.2mm thickness (steel) for their spider vanes?
I am reluctant to use the wire spider idea for a planetary scope.

How can I  cut steel that is 0.2mm thickness (thinness!), with a nice clean edge?

Thanks for putting up with my relentless questions.

Marco Miglionico.

www.geocities.com/telescopiman

--- BBBS/NT v4.00 MP