RE: REPLY: FROM NuArc was PPG Starphire Glass ( ?? Questioning My Data)

What do you mean by model? If you mean is the glass of the original
equipment on the NuArc 26-1k, I assume so, but can not be sure since
I purchased the unit used several years ago. The tempered glass is
replacement since the original was broken in shipment.

NuArc sells a GA-114 mercury vapor bulb for the 16-1k. I am currently
using in the machine a USHIO metal halide lamp (see SPD in the
appendix on UV light in Dick Arentz' book). This light is not
recommend by NuArc, but works in my unit same as the mercury vapor
lamp. The SPD charts for the two lamps are virtually identical.

Sandy

>Is that the NuArc model? What lamp are they burning?
>
>Eric Neilsen Photography
>4101 Commerce Street, Suite 9
>Dallas, TX 75226
>214-827-8301
>http://ericneilsenphotography.com
>> -----Original Message-----
>> From: Sandy King [mailto:sanking@clemson.edu]
>> Sent: Saturday, November 19, 2005 1:22 PM
>> To: alt-photo-process-l@sask.usask.ca
>> Subject: Re: REPLY: FROM NuArc was PPG Starphire Glass ( ??
>> Questioning My Data)
>>
>> The thickness of the glass on my NuArc 26-1k is 1/4". The
>> tempered
>> glass shield is 3/32".
>>
>> Sandy
>>
>> >DEAR ERIC,
>> > I didn't ask thickness but I can measure it when I go to my
>> >darkroom next
>> >week.
>> > CHEERS!
>> > BOB
>> >
>> > Please check my website: http://www.bobkiss.com/
>> >
>> >-----Original Message-----
>> >From: Eric Neilsen [mailto:e.neilsen@worldnet.att.net]
>> >Sent: Saturday, November 19, 2005 1:57 PM
>> >To: alt-photo-process-l@sask.usask.ca
>> >Subject: RE: FROM NuArc was PPG Starphire Glass ( ??
>> Questioning My Data)
>> >
>> >Bob, Did they tell you, or do you know how thick it is?
>> >
>> >Eric Neilsen Photography
>> >4101 Commerce Street
>> >Suite 9
>> >Dallas, TX 75226
>> >http://e.neilsen.home.att.net
>> >http://ericneilsenphotography.com
>> >
>> >> -----Original Message-----
>> >> From: BOB KISS [mailto:bobkiss@caribsurf.com]
>> >> Sent: Saturday, November 19, 2005 10:03 AM
>> >> To: alt-photo-process-l@sask.usask.ca
>> >> Subject: FROM NuArc was PPG Starphire Glass ( ??
>> Questioning My Data)
>> >>
>> >> DEAR LIST,
>> >> I don't know if this is useful to anyone but I
>> received a reply to a
>> >> question I sent to NuArc Tech services. They stated that
>> they use
>> >> "standard" glass but make sure it is perfect, i.e. no
>> bubbles or ripples
>> >> in
>> >> it.
>> >> CHEERS!
>> >> BOB
>> >>
>> >> Please check my website: http://www.bobkiss.com/
>> >>
>> >> -----Original Message-----
>> >> From: Eric Neilsen [mailto:e.neilsen@worldnet.att.net]
>> >> Sent: Thursday, November 17, 2005 11:37 PM
>> >> To: alt-photo-process-l@sask.usask.ca
>> >> Subject: PPG Starphire Glass ( ?? Questioning My Data)
>> >>
>> >> After last nights back and forth, I was indeed going to
>> call PPG.
>> >>
>> >> This required all of 3 minutes and a short wait for a
>> return call. I
>> >> received a call back from Penny Bridges. She has since
>> faxed to me data
>> >> for
>> >> both the Starphire glass and SOLARPHIRE glass. The thinnest
>> that the
>> >> Starphire is listed as being manufactured is 1/8" or 3.3mm
>> and all the way
>> >> up to 3/4. The data sheets do differ somewhat from those I
>> received in
>> >> 1992
>> >> as one would expect; most businesses update their
>> literature. I received
>> >> separate sheets for 4mm and 8mm and this one combines the
>> information and
>> >> transmission data in 10nm increments and only shows
>> transmission data for
>> >> a
>> >> glass with a thickness of 5.66mm. It does not show up on
>> the available
>> >> sizes
>> >> but that is what is referred to in the chart.
>> >>
>> >> While it does not match my data, as one would expect from
>> different
>> >> thickness of glass, it does come darn close to the 4mm data
>> that I have.
>> >> It
>> >> is not what I believe to be true as Sandy indicated in his
>> email, but what
>> >> I
>> >> know to be true based on the manufactures data. Penny said
> > that they have
>> >> not changed it since they first starting making it but do
>> offer a coating.
>> >>
>> >> It took very me little effort and would certainly have been
>> something that
>> >> I
>> >> would have done if I were to include test information about
>> a type glass
>> >> in
>> >> a book : ) But wait, that is what I DID back in 1992. It
>> appears in my
>> >> book
>> >> on platinum printing. I don't site all the data. But do
>> talk about why and
>> >> when one might benefit from using it.
>> >>
>> >>
>> >> This data also talks about the infrared quality of the
>> glass. I have not
>> >> studied gum like I have studied platinum/palladium
>> printing. It may be
>> >> that
>> >> Judy's experience with Starphire has something to do with
>> other
>> >> characteristics of the glass that are not beneficial to the
>> chemistry she
>> >> used.
>> >>
>> >>
>> >> At this moment, I can't lay my hands on them which does
>> bother me. I took
>> >> them out of my notes to make copies for some students and
>> can't locate
>> >> them.
>> >> I do however, have the data for the 4mm which is what Sandy
>> googled.
>> >>
>> >> I will however, be glad to post PDF's of the documents
>> after I receive
>> >> them
>> >> in the mail. The faxes are OK, but I'd rather wait at least
>> until I have a
>> >> chance to print them with my higher quality printer. I am
>> sure she'll fax
>> >> them to you too Sandy.
>> >>
>> >> The PPG web site that I posted last night has their phone
>> number. I
>> > > suggest
>> >> calling them.
>> >>
>> >>
>> >>
>> >>
>> >> Eric Neilsen Photography
>> >> 4101 Commerce Street, Suite 9
>> >> Dallas, TX 75226
>> >> 214-827-8301
>> >> http://ericneilsenphotography.com
>> >>
>> >>
>> >>
>> >>
Received on Sat Nov 19 16:49:57 2005