10 Jun
2014
10 Jun
'14
7:25 a.m.
On 6/9/2014 7:46 PM, dwight wrote:
I have done
business with a number of vendors there who sell made to
order camera adapter plates that probably have the means to turn these
out cheaply. I could send the drawings and a solicitation to build them
to those, as well as a number of others that I can contact and see what
comes back.
There are a number of mainland chinese vendors that turn out very nice
adapters for such as Nikon F lens system to Canon, Nikon F to Sony,
Nikon F to C, etc, as well as a lot of T mount adapters that probably
could make a plate, punch and pin affair rather easily given drawings.
I think once a few were made up, and purchased they'd probably have them
in their usual eBay rotation forever after that. There are still a
number of adapters that are ancient being listed there that are either
in a bin gathering dust, or are just so cheap to make they just leave
them in their catalog and build them when orders com in.
I do have to say though, I've not found any 3 1/2" 720k to 1.44m
notchers in a while other than maybe vintage.
Jim
From: silent700 at gmail.com
Date: Mon, 9 Jun 2014 16:29:28 -0500
Subject: Re: WANTED: NS boot disks and spare hard-sectored disks
To: cctalk at classiccmp.org
On Mon, Jun 9, 2014 at 1:45 PM, Chris Elmquist <chrise at pobox.com> wrote:
That was Dwight and me. Dwight came up with the
concept and I had a
friend with a precision, custom machine shop build them from delrin and
stainless. We built both 10-hole and 16-hole models but unfortunately
they are all in the hands of users now.
My friend won't build more because they were a lot more work than
anticipated and his deal is one-off prototype work and not production.
So, I can't offer to make more from here.
Just how much precision is needed?
(Not doubting you - I don't really
know.) Is it something that someone with decent shop skills could
replicate out of hardwood or some other material?
I have one each of your original plastic/steel punches - thanks for
creating them!
j The ones Chris and I had made were not exactly to the original drawings.Things were
cheaper by the use of delrin and just the punch plate madeof stainless plates.If it were
done again, some changes would be done. Improving the alignmentbetween the top plate and
the bottom is one. A secondary clamp betweenthe top plate and the punch plate might be
another. They do work well enoughto get the job done. They do have the occasional hanging
chad problem butcareful usage can turn any 360K disk into a hard sectored. They where
designedsuch that one could punch the holes without damaging the envelop ( myclever part
of the design ). I do have drawings around someplace but wouldhave to look.We made the
punches to cost $35 each. A better design would cost more.If someone were to have them
made in China, I suppose they could be cheaper.