sierpien2003.PDF

AUGUST

JOURNAL

2003

CONTENTS

GAS FORGE

UPDATE P.1887

FORGE BURNER P.1888

RUSTY RELICS P.1897

FORGING

SQUARE

TUBING

P.1891

A MONTHLY JOURNAL OF ILLUSTRATED TECHNIQUES D 151

#151, August 2003

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BLACKSMITH ’ S JOURNAL ARCHIVE

#47, July 1994

Forging pipe was the topic for issue

47. This month square tubing is the

focus in a four part feature that shows

how to twist, draw down and fuller

this unlikely forging stock.

A SERIES OF HANDLES AND

SIMILAR HARDWARE MADE

FROM PIPE STARTED OUT

THE FEATURE.

ALSO INCLUDED WERE STEPS

ON HOW TO MAKE A RIM ON A

CANDLE CUP.

1886

GAS FORGE UPDATE

We’ve been putting the gas forge prototype first seen in issue #149 through it’s paces in the Blacksmith’s

Journal shop, and it’s been a real joy to work with. The photos above show the fold away two piece mounting

bracket and a new burner we’re also testing. So far the only changes we want to make is to move the burner

to the side of the case, and use a ceramic fiber board liner with a slightly smaller firebox. The floor of the fire-

box shows a removable piece of hard ceramic (best if you’re using welding flux), Kaowool or another piece of

ceramic board (shown below). It can easily be brushed off,

turned over or replaced when worn. An adjustable sup-

port (also shown below) keeps stock off the floor.

All the work shown in this issue was made using the

prototype forge (built from the drawings in issue #149),

and the new burner shown in this issue. It heated up

quickly to a light yellow forging heat, and produced con-

sistently clean forgings. The next step? We’re adding the

forge and burner to our product line. Please check our

web site for new information as it becomes available.

FORGE CASE WITH FIBERBOARD LINER AND

REMOVABLE FLOOR INSTALLED

CROSS SECTION OF FORGE

SHOWING POSITION OF STOCK

AND ADJUSTABLE SUPPORT

BLACKSMITH’S JOURNAL 1887

FORGE BURNER

This is a prototype atmospheric burner for the gas forge that first appeared in issue #149 (see previous

page). Its main feature is an adjustable air inlet for fine tuning the burner at a given pressure. We chose

the sleeve design as opposed to the more common air horn design for production purposes (the mechani-

cal tubing components can easily be laser cut). The following feature was compiled using notes from the

construction of our prototype.

470-1

LAY OUT A CUTTING PATTERN ON A

PIECE OF PAPER, WRAP AROUND ¾”

SCH. 40 PIPE, AND CENTER PUNCH.

470-2

DRILL OUT THE CORNERS, AND

CUT OUT THE OPENINGS.

470-3

FILE TO CLEAN UP THE EDGES.

1888 #151 AUGUST 2003

CUT THE END

OF THE 1¼”x

14GA. TUBING

SLEEVE AS

SHOWN TO

MAKE THE END

CAP MOUNTING

LUGS. THE END

CAP CAN ALSO

BE WELDED

RATHER THAN

SCREWED TO

THE SLEEVE

470-4

BEND THE

LUGS DOWN

COLD, THEN

SET THEM

FLUSH WITH

THE END HOT.

CUT OUT THE

AIR OPEN-

INGS IN THE

SAME WAY

AS THE TUBE

(FIG. 470-2).

470-5

DRILL HOLES AT THE

BEGINNING AND END

OF THE AIR ADJUST-

MENT SLOT.

SAW BETWEEN THE

HOLES TO FINISH.

BLACKSMITH’S JOURNAL 1889

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