PLATINE & Ware Cyanotype

nawagi

Member
Joined
Mar 29, 2006
Messages
87
Location
Connecticut
Format
Large Format
Hey Kids-

How come my Ware Cyanotype is so crummy and weak on Arches Platine stock? It used to work great. And the Ware works fine on other papers (aquarelle, artistico)- did something change? Phases of the moon?

Just wondering if anyone else has had this happen.

NWG
 

Vaughn

Subscriber
Joined
Dec 13, 2006
Messages
10,109
Location
Humboldt Co.
Format
Large Format
The paper probably changed...happens all the time. The manufacturer changes the type and/or amount of sizing -- pH changes and all heck breaks loose. It doesn't matter to the watercolorists, so changes are never annouced.

Vaughn
 

Kerik

Member
Joined
Nov 24, 2002
Messages
1,634
Location
California
Format
Large Format
Nate you might try a pre-soak in oxalic acid to bring the pH of the paper down.
 

Robert Hall

Member
Joined
Aug 18, 2004
Messages
2,033
Location
Lehi, Utah
Format
8x10 Format
Agreed with Kerik, it can be quite close to a base in PH. (and one needs to be careful to coat the correct side. )
 

Vaughn

Subscriber
Joined
Dec 13, 2006
Messages
10,109
Location
Humboldt Co.
Format
Large Format
Robert Hall said:
Agreed with Kerik, it can be quite close to a base in PH. (and one needs to be careful to coat the correct side. )
Click to expand...

How does one tell "the correct side"? I have assumed it was usually the smoother side (often with a slight screen pattern). On the Cranes Weston Diploma Parchment, both sides looked the same, but one side was much easier to abrade when wet.

Vaughn
 
You must log in or register to reply here.
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…