|
| |
Links to Other Pages |
Let the cursor hover over any of the buttons above and it will display further details.
LINKS: All underlined words and pictures on this site are links. Please click on any of them..
The Wet Collodion Process Thomas Rodger
Below are some extracts from Thomas Rodger's paper
On Collodion Calotype, |
||||||
Prepare the Paper |
||||||
Select a Paper "Various kinds of paper are suitable for obtaining copies. I use almost exclusively a paper manufactured by Pirie and Sons." "No. 3 is on a cream-coloured wove paper, made by Cowan of Edinburgh. No. 1 is on Turner's photographic paper, procured from W & J Milne, Hanover Street, Edinburgh." [William & John Milne had a business at 33 Hanover Street. They were listed in the Edinburgh & Leith Post Office Directories, 1854-55 (and other years) as: "Booksellers, desk and dressing case makers".] |
||||||
Coat the Paper "Having got the paper fit for the purpose, the first thing to be done , before applying the blackening agent, is to imbue it with some of the metallic chlorides." "A solution of one salt may be used, or a combination of two or more. I use a mixture of two chlorides - viz. terchloride of gold and chloride of sodium, of the following strength: - Chloride of sodium, 50 grains. - Solution terchloride of gold, 30 drops. - Rain water (pure), 20 ounces. The strength of the solution of terchloride of gold is 15 grains of the crystallized chloride to 4 drams of distilled water." "The solution being put into a shallow dish of a size suitable fro the sheets of paper, they are taken one at a time by two adjacent corners, and are slowly drawn through the solution, fires one way then the other. They are then pinned by one corner on a wooden screen to dry." |
||||||
Render the paper Sensitive to Light "Taking a piece of the paper, and driving off any dampness it may have contracted by slightly warming it, I then proceed, with a glass rod or a pellet of cotton, to coat its surface with ammonio-nitrate of silver as evenly as possible, and then dry it quickly by holding it to the fire or pinning it up in a dry, darkish place." "It is advisable to use the sheet as soon as possible after it has been prepared." |
||||||
|
The Wet Collodion Process - as described by Thomas Rodger Jun. |
|||||||
|
Links to Other Pages |
Let the cursor hover over any of the buttons above and it will display further details.
LINKS: All underlined words and pictures on this site are links. Please click on any of them..
Links to Other Pages |
Let the cursor hover over any of the buttons above and it will display further details.
LINKS: All underlined words and pictures on this site are links. Please click on any of them..
|