Great Artists - Ghiberti (GHEE-BAIR-TEE)
Lorenzo Ghiberti was a sculptor who had been trained as a goldsmith. This week students will create a relief panel similar to Ghiberti's style. Tutors will have three options this week.
Option 1: Tutors or students will create a picture or shape on chipboard using a hot glue gun. The glue dries quickly and the students will take heavy duty aluminum foil and press it over the glue shape. Once the aluminum foil is in place, students will secure it with tape or glue to the back of the chipboard. Black tempura paint (thinned with water) will be placed over the foil. Once the paint dries, steel wool will be used to scratch the paint off the raised surfaces of the sculpture while leaving black paint in the low spots (cracks and crevaces) to create contrast.
Option 2: Tutors or students will create a picture or shape on chipboard using air dry modeling clay. Follow the remaining steps as in option 1.
Option 3: Follow option 1 or option 2 to create sculptor covered with foil. Instead of painting with black tempura paint, the sculpture will be taken outside to coat with a layer of gold spray paint.
Sample from Tutor Meeting. Completed with hot glue design, covered with foil, black tempura paint and steel wool method.
Option 2, 3 with clay instead of glue
Sample completed by Nancy Kubeck.
Option 2, 3
Experiment #125 - Spoon Pen
Purpose: To demonstrate a mineral streak test.
Materials: metal spoon (stainless steel)
unglazed porcelain tile
Procedure: Rub the handle of the spoon across the back of the porcelain tile.
Results: The spoon makes a dark grey mark on the white tile.
Why? A streak test is made by rubbing a mineral sample across a piece of unglazed porcelain. The color streak made is the same as the color of the powdered mineral. Grinding the spoon into powder would produce the same dark grey color as is seen on the porcelain streak plate. The color of the streak made by a mineral can be an important clue in identifying the mineral.
Experiment # 126 - Sampler
Purpose: To demonstrate core sampling.
Materials: 3 different colors of modeling clay
Procedure: Each student will have a 1 inch piece of clay made of three layers of different colored clay. Students will push a straw into the clay. To collect a "core sample" pull the tube out of the clay. Each tutor will use the fingernail scissors to cut at least one of the straws to show the 3 different layers.
Results: The straw cuts a cylinder-shaped sample from the layered stack of clay.
Why? As the straw cuts through the clay, the clay is pushed up inside the hollow tube. The captured clay is called a core sample, and it reveals what materials are layered inside the block of clay. Coring devises made of metal are used to cut through layers of soil just as the layers of clay were cut. The metal core sampler has a plunger that pushes the soil out so that it can be studied.
Tutor Meeting for Weeks 18-24
Saturday, Feb. 27th, 9:30am
RSVPs are enabled for this event.