Starless Clay: May 2013

Make colorful pens with this easy extruded cane technique!

When this tutorial popped up on my Pinterest feed, I knew right away that I had to try it and I ordered a set of ClayCore adapters that night. After a few experiments I figured out how to cover pens with the cane and came up with a bright rainbow palette that's perfect for spring flowers.

EDIT 7/6/13 The recipe for "Green" has been corrected. I apologize for any confusion!

You will need the following tools and materials:

Pasta machine

Makin's clay extruder

Small square disc

ClayCore adapter for Makin's extruder, 1 mm (smallest)

One 2-oz block each of Premo! clay in Fuchsia, Zinc Yellow, Cobalt and White

Slimline pen kit, or any pen/pencil kit with 2” long, 7mm diameter tubes

Tissue blade

Craft knife

Ruler

⅜” square Kemper cutter (not absolutely necessary but it will help you replicate my colors)

I’m about to tell you how to mix the color recipes that I used, but any sequence of nine colors will work. You will need about a ¾” ball of most of the colors, double that amount of the middle (fifth) color, and 1 ½ times that amount of the first and last color.

To make the neon rainbow colors, start by adding a little bit of white to your fuchsia- about 1 part of 32. This will prevent it from darkening too much during baking. Roll 2 mm (5-6 playing card) thick sheets of Cobalt, Zinc Yellow and the lightened Fuchsia and punch out squares with your Kemper cutter. Use them to mix the following colors:

Purple: 21 squares fuchsia, 3 squares cobalt

Fuchsia: 16 squares fuchsia

Red Orange: 8 fuchsia, 8 zinc yellow

Yellow Orange: 14 zinc yellow, 2 fuchsia

Yellow: 31 1/2 zinc yellow, 1/2 fuchsia

Yellow Green: 15 zinc yellow, 1 cobalt

Green: 12 cobalt, 4 zinc yellow

Blue: 16 cobalt

Violet: 12 cobalt, 12 fuchsia

Roll each color into a 2.5 mm (7-8 playing card) thick sheet. Use the end of your clay extruder to punch out three discs each of purple and violet (or first and last colors), four discs of yellow or the fifth/middle color, and two of each remaining color. Mix the remainder of each color with an equal amount of white clay and punch out the same number of discs from each pastel color.

Starting with dark, alternate stacking the dark and light versions of your first color, then the second, third, fourth, and half of the fifth color to form a log. Repeat to make the second log. Yellow (fifth color) should appear at the end of both logs. Roll each log to smooth it and reduce the diameter until it easily fits into the barrel of the extruder.

Place the first log into the extruder so that yellow will be pushed through first. Each color will contaminate the following colors a little bit, so I like to start with the lightest. If you used a different color palette you can start with whichever end you would prefer to keep the most pure. Now the tricky part- place the square disc over the clay core disk and screw on the end of the extruder. As you get to the last few twists needed to fully tighten it, adjust so that the four holes of the clay core disc line up with the corners of the square hole, as shown in the photo. They will be just barely visible through the square. If the discs are not lined up correctly, the “petals” will not be shaped as nicely.

Extrude the log and trim off the yellow end until it starts to look nice. Measure the extruded cane and divide that number by nine to figure out how long to cut each piece. My cane was 16” long so I cut it into nine 1 ¾” pieces, but I do recommend actually taking the measurement and doing the math as your results may vary depending on the exact thickness of the clay sheets you started with.

You’ve probably noticed that a small hole is running through the cane- you can start to close that by reducing the cane pieces a little. Arrange the nine pieces near each other without touching and flatten them just a little bit with a brayer or roller so that each is now slightly rectangular. Rotate each piece and carefully stick them together, in order, to form the final cane. Roll over it from end to end to flatten the pieces back into squares.

Repeat to make the other cane and let them rest for a few hours.

Roll a sheet of scrap clay on your thinnest setting. Cut five thin slices from one of your canes and carefully line them up on the sheet. Shave the surface with a sharp tissue blade until it feels even and smooth.

Closely trim the long edges with a craft knife, angling it inward to make a slightly beveled cut. The short edges don’t need to be cut as carefully.

Wrap the trimmed sheet around one of the brass tubes from your pen kit, matching up the edges as neatly as you can. It’s fine if the sheet doesn’t quite reach the ends of the tube. Roll the tube on your work surface to smooth and even out the clay layer, then trim off the excess at the ends.