[bitluni] took matters into his own hands and built this nifty DIY hole punch for light-gauge sheet metal. A little backstory will probably help understand why [bitluni] needs so many holes.
Holes of various sizes and shapes can be made quickly and simultaneously ... such as door frames which are produced as single pieces with a similar punch but different sizes. The machine works metal ...
The leather hole punch features a cylindrical steel tip with a sharp, knife-like edge that easily cuts into the leather to leave a clean hole. While you can also punch holes on leather using a ...
The first step in fabricating a sheet metal component is cutting to size. Shearing machines and shearing machinery perform this function. Shearing machines are multipurpose devices used in the cutting ...
these cards used square holes to encode information. Reading a card is simple. There are 80 columns on a classic card. If a column has a single punch over a number, then that’s what that column ...