This is my first Instructable, so please bear with me. Constructive criticism is welcomed!
Sometimes I need to drill a perfectly straight hole in surfaces too large for my little bench-top drill press. So I went about modifying my cheap (~$70-ish) drill press from a "bench tool" to a "hand tool." The mod allows me to make holes at a perfect right-angle to large or mounted surfaces like table-tops, floors, and shelves. It is also reversible, so I can convert it to a regular drill press again without any trouble. Best of all, it was free.
Step 1: Get Your Stuff
Tools you will need include...
- Things for disassembling the drill press. These may vary depending on who made your drill press.
- A few screwdrivers.
- Hex wrenches. The only size I needed was 5/32".
- A 1/8" pin punch (or a nail with the tip cut off).
- A hammer. The type doesn't really matter.
- Some method of applying a layer of ink/paint to a palm-sized area on metal.
- I used a Sharpie Magnum. Love those things.
- You could also use spray paint, Dykem layout fluid, regular-sized Sharpies, etc.
- Things for making a big hole in sheet metal. Specifically, a hole slightly larger than the column of your drill press.
- The Messy Way
- A file. Round or half-round files are probably best. A Dremel with a grinding attachment works even better.
- A hand drill .
- Standard twist drill bits.
- The Better Way
- A hand drill.
- A hole saw slightly larger in diameter than the column of your drill press. Mine is a bit over 1-13/16" diameter, so the closest hole saw size I would be able to find would probably be something like 2"
- The Messy Way
Oh, and you'll need a drill press, too.