Re: ATM Best lap-making methods

[Fraser Clarke <fjc3@st-andrews.ac.uk>]

I know some will disagree with me on this, but I just made my first pitch
lap about 5 days ago, and it went fine (second pour round). I used the
soldering Iron technique. I does leave some rough edges to the facets, but
these come out after a while cold pressing. Or I suppose one could paint
on some hot pitch and warm press it. I would  advocate taking the outside
5mm or so off the lap as I found it  very difficult to get the mirror
exactly center over center when pressing. If you don't get it exactly
right then you end up with a little ridge at one side of the tool. If the
tool is slightly smaller then there is more marign for error. 
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Thanks to everyone who has given me advice on my lap. I did my first spell
of polishing this morning (20min or so) and The center is looking polished
already. I know it will take a good 6-7 hours to polish properly out to
the edge, but it is still very heartening to see it working!

Thanks for the advice, and I hope that my bit helps you 'et'.

Bye BYe

Fraser Clarke

e-mail: fjc3@st-and.ac.uk
Homepage: http://www.st-and.ac.uk/~www_sa/personal/fjc3 (/atm)
AstroSoc homepage: http://www.st-and.ac.uk/~www_sa/socs/astrosoc/
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Excuses for not doing maths homework:

2) I got arbitarily close to my text book, but couldn't actually 
reach it.
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