Re: Bleach-development with gum
Hi Judy, It's a specific brand of indoor/outdoor wood finish: Hydrocote Polyshield Clear Gloss (or Clear Satin if you don't want excessive gloss / shine). It's "non-yellowing". See: http://www.hydrocote.com/our_products.htm "... The supreme finish of all, short of polyester. A super tough, super hard, non-yellowing polyurethane that is UV stable to meet the most demanding wood surface protection, interior and exterior. Designed for finishing and refinishing of all interior and exterior wood furniture, kitchen cabinets, table tops, counter tops, office furniture, flooring, children's furniture and toys, school desks, pews, bathroom fixtures and above waterline marine woodwork. Highly versatile - apply by brush, spray or wipe on. Self-sealing (for exterior application), or seal with our Clear Wood Sealer (for interior application), if so desired...." It gives a considerable dmax and dynamic range increse for both matte alt-process and inkjet prints. Since it's hard to apply it even when undiluted I dilute it 1:1 with water - no brushmarks / unevenness that way. You may also use a wire wound coating rod to apply it (undiluted) - I use a #30 laboratory coating rod from RD Specialties: http://www.rdspecialties.com/Page.asp?Script=4 Regards, Loris. > From: Judy Seigel <jseigel@panix.com> > Reply-To: <alt-photo-process-l@usask.ca> > Date: Thu, 06 Dec 2007 00:58:15 -0500 (EST) > To: <alt-photo-process-l@usask.ca> > Subject: Re: Bleach-development with gum > > > On Wed, 5 Dec 2007, Loris Medici wrote: > >> I usually make a polyurethane final coating - if I need shine >> and/or better dmax and dynamic range. > > Loris, is that a regular commercial polyurethane, like we buy in a paint > store for floors or woodwork? Or is there some other kind? > > Anyway, does it yellow with age? > > J.
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