luty2003.PDF

FEBRUARY

JOURNAL

2003

CONTENTS

BRIDGE LEG TABLE P.1814

PEDISTAL P.1810

RAISED PATTERNS

P.1805

BEGINNERS... P.1816

A MONTHLY JOURNAL OF ILLUSTRATED TECHNIQUES D 145

#145, February 2003

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BLACKSMITH ’ S JOURNAL ARCHIVE

#77, JANUARY 1997

In 1997 we introduced a technique used to develop

forgings before actually trying them out in the shop, call-

ing it “desktop blacksmithing”. This month we show

how desktop blacksmithing is used to develop “Raised

Patterns” for this month’s feature.

THE 1997 ARTICLE

SHOWED HOW TO

MAKE DAMASCUS

STEEL USING TWO

DIFFERENT COLORED

CLAYS. iT STARTED

WITH SLICING OFF

THIN STRIPS.

THE STRIPS WERE PILED, ALTER-

NATING FROM ONE COLOR TO THE

OTHER, TO MAKE A “STACK” REP-

RESENTING TWO ALLOYS OF

STEEL USED FOR THE BILLET.

AFTER DEVELOPING A PATTERN

(IN THIS CASE, TWISTING)

STRIPS WERE SLICED OFF TO

REVEAL THE DEPTH OF THE

BEST PATTERN.

1804

RAISED PATTERNS

448-1

This technique involves forging a pat-

tern, then sinking it in a die to develop

it. Although the examples shown are

small, it can be done any size.

CUT GROOVES HOT AT

RIGHT ANGLES. THEY CAN

ALSO BE CUT TO MAKE A

DIAMOND PATTERN.

448-2

EXAMPLE 1

SINK THE PATTERN IN A SPRING

DIE UNDER A TREADLE HAMMER

OR A POWER HAMMER.

DESKTOP FORGING

Making a Rosette

Desktop forging models are made out of

kneaded erasers, a pliable rubber eraser used

by artists. They contain no oil or water and

can be worked in a way similar to hot iron.

ROLL OUT A KNEADED ERASER TO ABOUT

3/16” THICK AND TRIM 2” SQUARE WITH

AN EXACTO KNIFE.

USE A SQUARE PUNCH LARGE ENOUGH TO

MAKE AN EIGHT POINT STAR. PRESS AT AN

ANGLE, DEEPER AT EACH POINT.

BLACKSMITH’S JOURNAL 1805

449-1

USE A SQUARE PUNCH TO DEVELOP

THIS PATTERN. PUNCH DEEPER ON

THE INSIDE CORNERS.

449-2

EXAMPLE 2

USE THE SAME PUNCH TO MAKE

SUCCESSIVE IMPRESSIONS SIMILAR

TO THE FIRST ONES.

Practice makes perfect, and working forged

models cold helps develop the best tech-

nique for a given job without having to waste

time in the shop.

USE A CUT OFF STYLE CHISEL TO MAKE

GROOVES FROM ONE POINT TO THE

OTHER AS SHOWN.

ROCK THE CHISEL TO MAKE THE

GROOVES DEEPER AT THE ENDS

1806 #145 FEBRUARY 2003

450-1

USING THE SQUARE PUNCH AGAIN,

MAKE EIGHT IMPRESSIONS AROUND

THE PERIMETER OF A CIRCLE, DEEPER

ON THE INSIDE CORNER.

450-2

EXAMPLE 3

USE A STRAIGHT CHISEL TO MAKE

GROVES BETWEEN THE IMPRESSIONS.

SINK THE PATTERN BETWEEN DIE SETS.

Desktop forging tools are made out of wood

with working surfaces similar to blacksmiths

tools. New and special pattern tools can be

developed along with the desktop forgings.

MAKE TOP AND BOTTOM TOOLS OUT OF

WOOD FOR SINKING THE ROSETTE.

THE WOODEN TOOLS ARE USED AS A MODEL

FOR A TOP AND BOTTOM TOOL USED UNDER A

PRESS OR TREADLE HAMMER.

BLACKSMITH’S JOURNAL 1807

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