Worlds Simplest Drill Bit Sharpener
Introduction: Worlds Simplest Drill Bit Sharpener
Do you want to give your old dull bits another life? Then I suggest to take a look at this instructable.
Step 1: Simple Design
As the title suggests, it's going to be a very simple build. You will need an extension nut and a matching bolt; obviously the bigger the nut, the bigger the bits you can fit in there. If you are after something more advanced, take a look at my other drill bit sharpener.
Step 2: Drilling the Nut
Before start drilling and marking. You need to create a flat surface on one edge of the nut. Then you can start by drilling three different sizes of holes in a way that half of the smaller holes are overlapped by the bigger holes.
Step 3: Filing
I used a triangular file to make the shape of these overlapped holes become like a drop, this simple drop shape later will help to centralize different sizes of bits automatically. 431
Just remember the bolt should be on the bottom of the drop.
Step 4: Sharpening
To use this jig, you have to insert your bit into the drop-shaped hole from the flattened surface we created, and the bit's tip will be out from the other side just a bit enough to be ground. Make sure the center line in the middle of the bit is aligned with the nuts edge, and then tighten the bolt to secure the bit. Then, start grinding the two sides of the tip gently without grinding the nut.
If you liked this project, make sure to check the advanced version here too.
If you have any questions or suggestions for me, please leave a comment I will reply as soon as I can. I hope you enjoyed this Instructable. You can also check the video tutorial of this project by clicking on the video, which is located at the top of this page. Please feel free to ask any questions in the comment section below, and
also, you can check my YouTube channel for more projects like this. 438