Re: [ATM] Wire Spider 3-vane

["Bill Wheaton" <junkwheaton@gmail.com>]

Thanks Mark.  Like the OP, I am also looking for a spider for my 12.5 inch,
and a wire one sounds interesting now, after reading the discussions.

For the life of me, I couldn't picture your description earlier on, but it
sounded great.  This look quite simple.  A picture's worth a 1000 words.
-Bill

On Tue, May 27, 2008 at 10:50 PM, Mark Cowan <toolontop@yahoo.com> wrote:

> Here's a composite picture of the wire spider I built years ago for my 8"
> f/6.
> The wires are .008" guitar strings, the tension is just enough to keep it
> stable.
>
> www.raddobs.com/atm/spider_for_8inch.jpg
>
> There's no adjusting hardware at all, collimation is done simply by sliding
> the
> PVC center along the wires.  It rarely needs adjustment, and I suppose if
> it
> was going to break it would have already.  Where the wires wrap around the
> center hub you need to bevel carefully so as to not impart kinks in the
> wires
> (which led to the one failure of one wire its ever had).
>
> Best,
> Mark
>
>
>
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