(1). Can you tell me the history of the ballpoint pen?
Quill pens were the writing instruments of choice for centuries, used by the Lord of the Manor. The Lord owned serfs, and the serfs owned hens, a prolific, and self-replacing source of quills. With the Industrial Revolution, an increasingly sophisticated technology produced better writing utensils, such as the fountain pen. This elegant writing instrument reigned supreme from 1884 to 1945, made a comeback in the early 1950s, and is still used to an extent today. It successor, the ball-point pen, has an interesting history, mirroring the stormy times into which it was born. It turned many a schoolboy mouth blue, and destroyed the handwriting of generations of ordinary people.
(2). Can tell me how a ballpoint works? Why doesn't all the ink come flowing out?
All of the pens that preceded the ballpoint used a watery, dark India ink that fed through the pen using capillary action. The problems with this technology are well-known. For example: The ink can flow unevenly. The ink is slow to dry. The ink is exposed to the air while it is flowing through the pen, so it cannot dry quickly or it would clog the pen.
When it does accidentally dry in the pen, the ink gums the whole thing up and requires meticulous cleaning.
It would act as a cap to keep the ink from drying.
It would let ink flow out of the pen at a controlled rate.
(3). How pencils are made?
(4). What’s the pencil’s grading and classification? For example, HB, 2B.
(5). What’s the history of Oil Pastel?
They had a creamy consistency with a brilliant color palette. The unusually wide range of grays were chosen specifically by Picasso. Later an assortment of iridescent and metallic pastels was added followed by fluorescents. Sennelier also makes a giant pastel, and more recently a new "Le Grande" size in the same color range as the standards..
(6) What are the differences between oil pastels, soft pastels, hard pastels, oil sticks and oil bars?
(7). What supports are good with oil pastels?
(8). What’s “Correction Tape” and “Correction Fluid”?
(9). How to use correction tape?