Verdigris Growing

Name: Jennifer Wellington
Date and Time:

2017.Jan.23, 09:20 pm

Location: Apartment
Subject: Verdigris setup

Filled the mason jar with Heinz white vinegar.
Wiped the copper sheet clean with a paper towel and curled the long edge over the center of the string, pinching shut.
Taped both ends of the string so that the copper would not touch the vinegar before the lid was screwed on (or after, during removal.)
Placed the jar in a plastic box within a water bath heated to 26 C (78.8 F).

Basing on recipes from Vastrepast that emphasized hanging the copper over vinegar rather than submerging it. I intend to leave it mostly undisturbed, since that is often emphasized as well.

Pliny
“it is made by piercing holes in white copper, and suspending it over strong vinegar in casks, which are closed with covers”

Mappae Clavicula
“Take very clean copper leaf and hang it over very sharp vinegar. Leave it undisturbed in the sun for 14 days. Open it up, take away the leaf and collect the efflorescence; and you will make the cleanest verdigris.”

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Name: Jennifer Wellington
Date and Time:

2017.Jan.24, 08:53 pm

Location: Apartment
Subject: Verdigris check up

Removed the jar from the hot water bath and inspected the copper under light - already dark green.
Placed the jar on a closet shelf (ambient temperature 69-73).

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Name: Jennifer Wellington
Date and Time:

2017.Feb.05, 04:09 pm

Location: Apartment
Subject: Verdigris check up

Removed jar from closet in preparation for dismantling and bringing to lab. The copper was so dark as to look black underneath a CFL bulb, but the photos show a deep greenish tinge. There is a small chip in the lower left hand corner of one side, revealing shiny copper.

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