Copying Devices
Source: Fox, Helen, Non-formal Education Manual. The Institute for
Training and development. Manual M0042, PC ICE.
Hectograph
Materials:
1 flat pan or cookie sheet
or wooden box just larger than a sheet of paper
1 of the following transfer
mediums
Transfer medium #1:
Transfer medium #2
:Transfer medium #3:
Transfer medium #4:
1 box gelatin
1 part fish or animal glue, broken and soaked for 2 hours
12 grams glue
120 grams glycerine
1 pint glycerine
2 parts water
2 grams gelatin
40 grams sugar
4 parts glycerine
7 1/2 ml water
10 grams gelatin
2 grams sugar
8 grams barium sulfate
Mix the transfer medium:
For transfer mediums 2 and 3, you need to let the glue sit in the water
for
2 hours. Then the mixture is heated until all of the glue is dissolved.
For all of the transfer mediums, mix all of the ingredients together
for 15
minutes (only 7 minutes for medium #1). Stir occasionally and skim
off and
scum.
Pour the transfer medium into the shallow pan and allow it to cool
for a
few hours (medium #1 needs to sit for a full day).
To use:
Write the message to be copied
with ink on good quality paper.
Dampen the transfer pad with a sponge
Place the paper, message side down, on
the transfer pad and smooth it
out. Leave it on the pad for 4-6
minutes.
Carefully remove the paper
Place a clean sheet of paper on the pad
and leave it there for 5-10
seconds
For each additional copy, leave the
paper on the pad for a longer
period of time.
When finished, wipe the pad with a wet cloth and cover it with a piece
of
paper
The hectograph can be used again after 24 hours, and the gelatin can
often
be re-cooked and reused
Mimeograph
Materials:
1 sheet of wood just larger
than the size of a piece of paper
3 sheets of cotton cloth
the same size as a piece of paper
ink
1 rolling pin
stencil to be copied
thumb tacks
paper
Pin the 3 sheets of cloth to the board so they lie
on top of each other.
Cover the sheets with ink.
Place the stencil on top of the sheets
Place the paper on top of the stencil
Roll the rolling pin across the paper to transfer
the stencil
Replace the piece of paper and repeat
Silk Screen
Materials:
1 wooden frame, slightly
large than the area to be printed
Hinges
Solid piece of wood or plywood
the size of the frame
A sheet of silk, nylon hose,
or other fine mesh material
Stencil to be transferred
Squeegee (or a strip of
rubber attached to a piece of wood)
Tape
Ink
Assebly:
Attach the wooden frame to
the plywood with the
hinges
Stretch the silk or nylon across
the bottom of the
frame
To use:
Place the stencil on the screen and secure it with tape.
Place the paper, cloth, or whatever will receive the image under the
screen.
Place the ink at the top of the stencil and use the squeegee to cover
the
stencil with the
Ink
Remove the paper, cloth, etc., put a new piece in, re-ink, and repeat.
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