search:

Spectrum

Country Love Crafts stock Spectrum's Superstrokes Underglazes.

This series was designed with the contemporary studio market in mind. A collection of 70 brilliant colours that can be used under or over a glaze. They are available in 8 oz squeeze bottles with a flip top lid – great for putting colour onto a palette.  Some of the more popular colours are available in a pint size bottle.  These colours should be applied to mature bisque fired at 1060 - cone 04 and fired to 1020 - cone 06.

Some of the colours in the range are available in a 2oz writer bottle or 3D dimensional option.

Preparation:

Before using the pen unscrew the black plastic cap and remove the liner from inside the cap. After screwing the cap back on the bottle, take off the clear plastic cover. The black plastic tip has a reasonably small hole which can be used without modifications in most applications. If you want to make thicker lines, carefully cut a small piece off the end of the tip with a sharp knife or scissors in order to enlarge the hole.

Tips for use:

Before using the pen on your ceramic piece, first shake the pen vigorously and then test the flow by squeezing some of the colour out on a piece of paper. This should remove any air bubbles and establish a consistent flow. If the colour has become too thick to flow properly, unscrew the black plastic cap and drop 2 or 3 droplets of water into the bottle. Then replace the cap and shake vigorously and test again. When writing, hold the pen tip in contact with the piece. It makes it easier to control the writing than holding the tip above the piece and dropping the color onto the surface. Do not hold the pen directly vertical while writing because this leaves no gap for the liquid to flow out of. Hold the pen at an angle to the surface so that there is an opening for the color to flow through. Because the colour is thicker than ink you must write more slowly than with a pen to allow time for the liquid to flow through the tip. You can create a large variety of line thicknesses by varying finger pressure and writing speed. The harder you press and the slower you write the thicker your lines will be.

Using the optional metal tips:

If you would like to make finer lines than can be achieved using the plastic tip you can purchase a metal tip that can be screwed onto the plastic tip. In order to attach the metal tip you will need to cut approximately ¼ inch off the end of the black plastic tip. This will provide a fat enough end to screw the metal tip onto.

Avoid clogging the tips:

The liquid in a SuperWriter pen is a type of coloured glaze and like any other glaze it will harden in the pen tip unless you do something to prevent it. We recommend taking a staple from your stapler and straightening out one end to use as a reamer to push into the metal tip. It is helpful to leave the staple in the tip when the pen is not in use to prevent clogging. When you are finished using the pen for the day, the metal tip should be removed from the plastic nipple and the clear plastic cover replaced on the bottle to prevent the pen from drying out. Also when you have an empty pen you should clean it out and fill it with water. After you have finished using a metal tip you should screw it onto the pen filled with water and squeeze water through the tip to clean it out. Letting a used tip soak in water will help prevent hardening and plugging.

Click here for Spectrum's website.