Taper reamer in for brace
1 Taper reamer in.) for brace. 1 Center punch.
1 Electric soldering iron (100 watts, small pointed tip). 1 Heavy knife
1 Circle cutter (adjustable) for brace. 1 Screw driver bit for brace. 1 Countersink for brace. 1 Carpenter's ratchet brace. . 1 1 Hand drill (2 speed).
1 Yardstick or other straight edge. x 1 Carpenter's plane (8 to 12 in.). 1 Combination square (12 in.). 1 Pr. wing dividers (8 in.).
1 Long shank screw driver with screw holding clip i}/i'\n. , blade).
1 Screw driver (6 in. to 7 in. M in. blade). 1 Screw driver (4 in. to 5 in. in. blade). 1 Scratch awl or ice pick. 1 Cold chisel (% in.) 1 Wood chisel (y2 in.). 1 Pr. tin shears (10 in.). 1 Set small stamped steel open end wrenches. Several small "C" clamps.
Drills; particularly % in., 14 in., % in. and Nos. 13, 21, 28,
1 Combination oil stone for sharpening tools Sandpaper and emery cloth (several grades). Steel wool.
Soldering paste (non-corroding).
Method of Bending and Cutting Sheet Metal.—The cutting of sheet metal is generally performed with a hacksaw, following a marked outline on the panel to be cut, after which the rough edge is trimmed down to measurement with a suitable file.
A dependable steel square should be used in marking out the various lines to be cut, otherwise the assembly will be out of alignment when put together.
FIG. 1—Showing method of laying out metal to be developed into a radio receiver chasms. The dimensions shown are typical only, and should not be considered as standard for any particular job.
FIG. 1—Showing method of laying out metal to be developed into a radio receiver chasms. The dimensions shown are typical only, and should not be considered as standard for any particular job.
As a final finishing of the edges it is recommended that a long piece of emery cloth or sandpaper be placed on a fiat surface, on which the edge of the metal be run back and forth.
In bending a piece of metal the sheet may be scratched as deeply as permissible (without weakening the strength of the piece) after which it is put in a vise and bent to the desired form. Sometimes a pair of iron bars or angles of the same length or longer than the width of the sheet, will facilitate the bending process.
Laying Out the Apparatus.—A general practice of good workmanship is to lay out the component parts, on a sheet of heavy
Post a comment