In the simplest sense , usually hammer driven, nails, ice picks and awls can punch smaller holes in most materials. This is very useful for starting screws, Too often in sheet stock, the holes are jagged and not true, The opposite side usually has large burrs, which require removal. Punches on the other hand use the shearing action of a die either against an anvil or through a close fitting female die. Better ones produce almost no burrs, Punching is a fast way to make starting holes for saw blade for internal cuts.
Some punches are available as interchangeable knife type blades. These are pushed by hand into softer material, such as wood, paper or thinner plastic. Also they can be chucked in a drill or other press or tapped wit a soft hammer. Sizes are limited. They can be also be used to make disks.
Using a lathe other sizes could be made from steel tubing by turning a sharp bevel on the outside for disks or the inside for holes.
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XACTO PUNCHES
.185" ID
.437" ID
Four corners can be set with this punch to establish rectangular opening, then connecting lines can be cut with any selected method, for doors, windows etc.
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3/16" CORNER PUNCH
The NWSL Sensi-Press has die accessories for punching small holes in thin materials. Available are 1/16. 5/64, 3/32 and 1/8" round; 1/8" square and 1/8 x 1/4 rectangular. With adapter sleeves, the above punches can be used.
Many plier handle type punches can be found for paper at stationery and for leather work at craft suppliers. Ticket punches quite often have unique shaped dies for identification purposes. These can be used to create positive or negative relief motifs for decorating structures. Various sized portholes can be made by round dies.
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PLIER TYPE PUNCHES
Ticket or paper.
Multiple size leather.
Heavy duty hand punch with compound leverage and range of 3/32"-9/32" in 1/32" increments. Female dies screw in bottom, while center pointed male slide in top. Point is placed in center punched dimple to assure centering. Handles 1/16 sheet metal with clean holes. Holes can be reamed to size, once punched. With a little practice, washers can be made by partially punching OD for later reference.
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HEAVY DUTY SHEET METAL
This screw type can punch 1/16" and 1/32" round holes in sheet metal . Throat is short, but could be lengthened with only slight weakening.
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SCREW TYPE
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