Re: [ATM] BVC

[Gordon Tulloch <gtulloch@shaw.ca>]

I also recently did a 8" mirror from a flat blank - the only problem I had was chips in the bevel when I received the blank apparently (according to Andre) due to a diamong grinder bit that needed replacement. I could have returned the blank and chose not to, and later was given appropriate compensation on a 16" blank I'm working on now. As stated the material is very easy to work with, and the biggest challenge on my 8" f10 project was how quickly it parabolized! 

Overall I've got no complaints with ASM or BVC.

Regards,
  Gord

----- Original Message -----
From: chris.welsh@rogers.com
Date: Friday, June 18, 2004 11:20 am
Subject: Re: [ATM] BVC

> I did an 8 inch from ASM a while ago....the glass is very soft and 
> easy to grind.  Polishing wenet quickly for the same reason. 
> However it is tricky to figure, in that changes in the shape can 
> occur very rapidly.  
> 
> As for its quality, i don't notice any issues with the optics in 
> the scope (i've only ever done 2 mirrors though, so i'm nowhere 
> near an expert on the matter)
> 
> Chris
> 
> 
> 
> > 
> > From: "Jacob Lauser" <sirius@riverstyx.com>
> > Date: 2004/06/18 Fri AM 10:19:22 EDT
> > To: <atm@atmlist.net>
> > Subject: [ATM] BVC
> > 
> > I'm sure it's been discussed before, but perhaps someone could 
> tell me what the current consensus on BVC mirrors from ASM 
> Products in Quebec? I'm thinking of either buying a prefigured 
> blank from them or trying a standard pyrex from elsewhere. Thanks!
> > 
> > - Jake Lauser
> > Tucson, Arizona
> > _______________________________________________
> > ATM mailing list http://www.atmlist.net/
> > 
> 
> Thanks,
> 
> Chris Welsh
> Audio / Communications Technologist
> chris.welsh@rogers.com
> 
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
> 

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