[ATM] extreme raised edge

[gfbrandenburg at yahoo.com (Guy Brandenburg)]

I should try that (HCF)! We usually use burgundy pitch
and tend to get turned-down edge and then have to work
like the dickens to get rid of the TDE. Might a
different type of lap do the job?
Guy
--- Matheus Jatkoske Lazo <mjlazo@if.sc.usp.br> wrote:
> In my new mirror I have tried a HCF lap. It polished
> very well but the last 10mm
> of the mirror become extremely raised. The curvature
> of this zone is about 100mm
> less than the spherical part. I would like to now
> how is the better way to
> correct this zone. 
> 
> Any help would be appreciated...
> 
> Matheus Lazo
> 
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=====
Guy  BrandenburgWashington, DChttp://home.earthlink.net/~gfbranden/GFB_Home_Page.html

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