Re: [ATM] Trepanning...you know for kids!

[Dale Eason <atmpob@yahoo.com>]

You done good.

You can search the archives of either this list or the
yahoo atm_free to find out how to grind the edge.  I
remember a discussion in the last two years.  

Perhaps those folks will speak up.  I'm sure they
will.

Dale Eason
--- Norm Prince <norman.prince@verizon.net> wrote:

> Hurray...it worked.
> 
> I know this is old hat to you cats.
> 
> Anyway... i done chopped me out a circle of
> glass...(that's how us southerners talk <wink>)
> 
> I posted some of the saga at
> http://mysite.verizon.net/cmb15s7x/trepan.htm
> 
> As far as the blank goes...I didn't really have much
> trouble with the chipping and such as the tool cut
> thru that many folks spoke of.  Only one small area
> showed any evidence of this problem...no big deal. 
> I might ad that i did not rotate the work 180
> degrees as suggested because i was worried about
> getting it centered over the tool properly (relative
> to the original center).
> 
> I did wind up cutting a bit of a taper into it tho. 
> The taper is non-exsistent on one side and
> pronounced on the other...it puckers out, on what i
> see as the back of the blank, about 1/16" at its
> worst.  Tho all in all the back side of the blank is
> roughly speaking 1/16" wider on the whole as the
> front...the front of the disk only varies in
> diameter by about 1/32"...
> 
> So how did i do?  Yall think i can make a decent
> mirror out of this, or should i start over?
> 
> I'm sure to have some more
> questions...lol...probably about centerless grinding
> first and formost...in order to shape this thing up
> a lil more before i start making a mirror out of it.
> 
> -norm-
> Georgia, USA (land of bad seeing)
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
> 


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