U of S | Mailing List Archive | alt-photo-process-l | RE: Mike Ware's POP Pt./Pd. Pt

RE: Mike Ware's POP Pt./Pd. Pt

Probably you are right. Add gold chloride and sodium tungstate as important
chemicals to change colour as well.



-----Oorspronkelijk bericht-----
Van: EJN Photo [mailto:ejnphoto@sbcglobal.net] 
Verzonden: vrijdag 10 november 2006 20:31
Aan: alt-photo-process-l@usask.ca
Onderwerp: RE: Mike Ware's POP Pt./Pd. Pt

Witho, I think that you'll find that is related to the metal salt being
used. Ware/Malde stays with PT as a common part of the coating solution. Zia
(Sullivan/Weese) stay almost exclusively, and certainly early on in the
promotion of it, palladium salts with color changes being controlled by the
cation; NA, Li, Cs.

Eric Neilsen Photography
4101 Commerce Street, Suite 9
Dallas, TX 75226
Skype : ejprinter
> -----Original Message-----
> From: Witho Worms [mailto:info@witho.nl]
> Sent: Friday, November 10, 2006 11:19 AM
> To: alt-photo-process-l@usask.ca
> Subject: RE: Mike Ware's POP Pt./Pd. Pt
> In my former mail I used a lot of times the I word. In fact it
> was If and
> In. Must be Freudian. Maybe still not correct English but
> already better and
> sending it twice gives me the opportunity to make my point
> ...., Freudian?
> I do want to say something in respect to POP. If you start from
> the
> descriptions Carl Weese and Dick Sullivan have given, you will
> find out that
> humidity is NOT at all important as long as you keep the
> humidity of the
> sensitized paper high. Shifts in printing colours are easily
> made with
> chemicals. (I have never used Mike ware's formulations though)
> I would
> recommend using Platinum 6 as a contrast agent for DOP. It can
> work very
> well. Dichromate is very effective in POP but also affects
> printing colour.
> Regards,
> Witho
> -----Oorspronkelijk bericht-----
> Van: Sandy King [mailto:sanking@clemson.edu]
> Verzonden: vrijdag 10 november 2006 16:58
> Aan: alt-photo-process-l@usask.ca
> Onderwerp: Re: Mike Ware's POP Pt./Pd. Pt
> Cost wise I don't think you will find a
> significant difference between traditional DOP
> Pt./Pd. with ferric oxalate and POP Pt./Pd with
> ferric ammonium oxalate with either the Ware
> method or Ziatype. FAO costs a lot less than FO,
> but in the larger scheme the paper and metal
> salts represent more than 90% of the total cost
> so if the goal is to save money the best method
> is to buy the metal salts and paper in volume.
> To this point I have used primarily traditional
> DOP Pt./Pd. with the dichromate system of
> contrast control, though I did experiment with
> Ziatype in the past, and in the last several days
> I have made some very nice prints with the Ware
> method. For the most part, DOP Pt./Pd. has proven
> trouble free, but getting the FO solution right
> is very important, which can be complicated by
> the fact that FO is an ill-defined substance and
> supplies can and do vary. The advantages of FAO
> are that it is less expensive, better defined,
> and goes into solution much easier than FO.
> I really don't know which method would be better
> for a beginner. I tend to think that POP Pt./Pd.
> might be slightly easier, but control of humidity
> is more important than with DOP Pt./Pd. since it
> affects both color and printing speed.
> If cost is a major issue you might consider
> making kallitypes and toning them with palladium
> or platinum. The end result if almost identical,
> in that in both cases you have a print that is
> primarily made up of metallic palladium or
> platinum. Silver nitrate is a lot less expensive
> than palladium or platinum, and you don't waste
> the palladium except on images that are good.
> However, making good kallitypes also requires a
> lot of attention to detail.
> Sandy King
> At 11:06 AM -0500 11/9/06, Jordan Wosnick wrote:
> >For someone beginning Pt/Pd printing (but with
> >experience doing Vandykes and cyanotypes), would
> >you all recommend the Mike Ware (ammonium
> >ferrioxalate) method or the "traditional"
> >(ferric oxalate) method? Is Ware's method
> >cheaper than the "traditional" method?
> >
> >Thanks
> >
> >Loris Medici wrote:
> >>And I'd say we should thank Mike Ware, Pradip Malde, Dick
> Sullivan and
> >>Carl Weese (and other persons involved - not forgetting the
> early
> >>pioneers) for their efforts in devising workable, beatiful
> methods of
> >>POP Pt/Pd printing using AFO sensitizer and sharing the
> information
> >>freely without any commercial intention.
> >>
> >>Thank you! (Bowing)
> >>
> >>Best regards,
> >>Loris.
> >>
> >>-----Original Message-----
> >>From: Sandy King [mailto:sanking@clemson.edu]
> >>Sent: 09 Kasžm 2006 Pers¸embe 03:22
> >>To: alt-photo-process-l@usask.ca
> >>Subject: Mike Ware's POP Pt./Pd. Pt
> >>
> >>...
> >>
> >>In any event, I thank Loris Medici for putting me on the
> potential
> >>advantages of FAO. Lots of potential here I believe.
> >>...
> >>
> >
> >--
> >
> >
> >Jordan Wosnick
> >jwosnick@fastmail.fm