Making Square Holes In Sheet Metal

Drill a hole in the metal close to but smaller than the finished hole size.

Making square holes in sheet metal.

Blacksmithing for beginners cutting a square hole in sheet metal. Here are some methods depending on the tools you have and the size of the square hole and the thickness of the sheet metal. The bit used is a 1 8 single flute type. Next use a compass to outline the edge of the hole.

Drag an awl along the end of the combination square blade. The first step for all these methods is to mark where on the sheet you want your square hole and sometimes the center of the square. The router is just a standard off the shelf ryobi router mounted under a home made router table. Insert the broach and ensure it lines up at 90 degrees from the work peice or the hole will be crooked.

Extend the combination square blade until it meets one side of the drilled hole. This is a simple diy solution to broaching odd shaped holes in metal. Move the combination square and repeat the process to mark a straight line on each side of the drilled hole forming a square. Super easy tip in this video we show you how to drill a hole for a carriage bolt.

You start off by drilling a small diameter pilot hole and then drill gradually larger holes until you get. How to use chisels instead of files to cut a share hole for carriage bolts. Put your ink to the use and mark the hole center. How to drill a square hole.

Drilling a hole in sheet metal with a twist drill is a rather straightforward operation. This will create dimples in the sheet. Simple tool to drill square holes. Drill a hole large enough for a jigsaw blade in the part you re cutting out then cut it out with the jigsaw you ll have to curve into the straight lines of your square hole and do a little whittling but it works level 1.

Use either a fine tipped sharpie or a metal scriber depending on your tolerances. Use your center punch to strike at the center of the hole. Now it s time to use that center punch. Use this technique to make perfect square or rectangular holes in 040 aluminum.

Use a hydraulic press to gradually and smoothly increase pressure until the broach is forced through the hole cutting material and forming a square.