Re: [APML] A mount of dilemma

["Brian Larmay" <astrobri@ameritech.net>]

Hi Loren,

Its pot metal...very porous...lottsa bubbles.
I remember working as an inspector at a die casting company and doing
porosity checks to make sure there werent any bubbles or at leaste try to
get the leaste amount for Ford manifolds and such.
So having that knowledge behind me, it was the first thing I looked for in
the threads when I first bought it.
I can imagine if I cut through it, I would be even more disapointed.

Whoever set the standards on these mounts did not care very much what went
through as far as being porous.

Ill take a pic tomorrow of it and post it on the page....my quick cam doesnt
give the greatest resolution in this artificial light for some reason.
Im also going to contact Orion and see if I can get a spare.


> Brian - could you get a detailed close-up of the failed edges. I am
> curious to see if there is evidence of a fatigue crack or if it just
> yielded out due to load. Also is it aluminum or pot metal??
> Loren Banbury
>
> Jim Ives wrote:
> >
> > Brian what kind of mount is it?  i can't tell by the photo.
> >     Maybe I should add this to my "what can go wrong" page!
> > http://flyboy999.freeyellow.com/LinksPage/WhatCanGoWrongWill.htm
> >
> > Jim Ives
> >
> > ----- Original Message -----
> > From: "Brian Larmay" <astrobri@ameritech.net>
> > To: <astro-photo@seds.org>
> > Sent: Thursday, February 27, 2003 10:19 PM
> > Subject: [APML] A mount of dilemma
> >
> > > Heres what happened to me tonight:
> > > http://www.astrobri.com/things_that_can_go_wrong.htm
> > >
> > > Brian
> > >
> > >
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