RE: Xenon Flashtube was Re: PPG Starphire Glass ( ?? Questioning My Data)

Yves,
I would say build or buy a reliable UV source to start with. A lot of people
on this list use banks of BL tubes. The do not generate heat, have high UV
intensity (short exposures!) and as Loris pointed out are inexpensive to
build. I have been using them for several years now for a number of alt
processes including gums.
Second, sieze your paper with some hardened gelatine.
After that you can use any middle of the road gum recipe and it will all
work for you. You can even experiment to your heart's content to discover
why we all agree to disagree about gum printing.
Have fun at it.
Marek, Houston

>From: Loris Medici <loris_medici@mynet.com>
>Reply-To: alt-photo-process-l@sask.usask.ca
>To: alt-photo-process-l@sask.usask.ca
>Subject: RE: Xenon Flashtube was Re: PPG Starphire Glass ( ?? Questioning
>My Data)
>Date: Fri, 18 Nov 2005 18:51:01 +0200
>
>It's Loris (abbreviated form of "Lorenzo" AFAIK).
>
>$110 - $130 (for 8x40W lamps + 8x40W self starting electronic ballasts)
>+ some labor (a fun and nice weekend project). I guess the price for a
>20W system would be considerably lower (especially in the ballasts
>department).
>
>Have you tried to expose Cyanotype and/or Vandyke with Photoflood? I bet
>Photoflood exposure times would be impractically long with those
>processes (I already find the exposure times I get with BL tubes long
>enough). Didn't try myself - just guessing / betting as I wrote - what
>others think about this?
>
>Regards,
>Loris.
>
>-----Original Message-----
>From: Yves Gauvreau [mailto:gauvreau-yves@sympatico.ca]
>Sent: 18 Kasım 2005 Cuma 18:24
>To: alt-photo-process-l@sask.usask.ca
>Subject: Re: Xenon Flashtube was Re: PPG Starphire Glass ( ??
>Questioning My Data)
>
>
>Yes Lori,
>
>I assume everyone would love having a plate burner complete with vaccuum
>and light integrator. But if I may ask what kind of price your speaking
>about for a BL setup? My photoflood bulb cost me about 7.50 USD and it
>does the job and better yet it's a point source.
>
>Regards
>Yves
>
Received on Fri Nov 18 15:08:32 2005