GUNSMITHING AND TOOL MAKING BIBLE
MATERIALS Galvanized Iron Sheet, 26 Gauge 1 Piece. 7 1/2 X 32 (Top & Sides) 1 Piece. 7 1/2 X 8 1/2 (Door) 1 Piece. 6 1/2 X 1 ...
5 Insulating Firebrick, 2300°f, 9 X 2 1/2 X 4 1/2 24 Round Head Sheet Metal Screws, #6 X 3/8 1 Piece. Asbestos Shingle or Sheet ...
boards that are cut to the length needed. Bending the pieces with the above method is slightly more difficult, and they can achi ...
you want. Take the two half bricks and looking at the coil layout, route the bricks so the heating elements will fit. The routed ...
AMOUNT OF COILS The amount to which the coils return should be the length needed as determined above. Starting 3 inch from the e ...
We should put the bottom piece in position to check the locations where we should drill the holes. The holes should be the same ...
Take the two pieces of 2 x 3 2-inch sheet metal and bend them into a bracket for the terminal board. Bend a 2-inch flange on eac ...
Use clamps to hold the door piece down against the insulated surface to prevent warping during welding or brassing. About 1-inch ...
Set the two bracket pieces on the positioned door rod and locate the three screw holes on the sides of the metal case. Drill hol ...
In mounting a pyrometer, the vent holes in the back cover can be used to pass the thermocouples through to the back firebrick an ...
BUILDING A GAS HEAT TREAT FURNACE Building a small heat-treat furnace for the shop. This furnace is made from standard firebrick ...
pipe; this will go to the blower. Next, you will need to cover the firebrick on the outside. Cut 1/8 inch metal to fit to the ou ...
to tap into the airline with a line from your gas supply. The basic tools for heat-treating are the gas torch. The torch is a si ...
The air blast tends to blow the main flame so far away from the end of the mixing tube that it will mix with so much outside air ...
to shut the air down quite a bit. If you tried to use the full amount of air, it would blow out the flame. When you are ready to ...
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LATHES TYPES OF LATHES. Lathes used in manufacturing can be classified as speed, engine, and tool room. Special types of lathes ...
process after a few passes on the O.D. Turning constitutes the majority of lathe work. The work usually is held between centers ...
In turning operations, diameters usually are measured with micrometer calipers, although spring calipers may be used to check ro ...
to be performed than can be accomplished when the work is held between centers; Two basic types of chucks are used. The tail sto ...
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