This instructable will help you create a tool for repeatedly grind perfect screwdriver tips. The idea is to roll the tool on the bearings back and forth, over an abrassive media, to grind the tip.
These screwdrivers have removable tips made of brass and sometimes copper ( for not marking or scoring the screws and also not be affected by magnetism).
There are some branded similar tools in the market that use a spring instead of a screw but cost quite a lot of money.
This tool costs just a fraction of the branded ones and can have the same results.
Hope you like it and vote it ?
This is a small video of the tool in action.
Lets get started
Step 1: Tools
Also a 4mm tap with a taping wrench and a small file.
Step 2: Materials
- 2 identical ball bearings with 8mm ID (i used an old pair i replaced from my small bandsaw)
- An 8mm round steel rod about 6cm long
- A 4mm 3cm long screwdriver sloted machine screw
- Some loctite or epoxy or even superglue.
Step 3: Drill a Center Hole
Step 4: The Side Retaining Screw
Step 5: Assembly
Step 6: Finished Tool and Use
Step 7: Through the Lens and Extra Tip
Thats it. Hope it is usefull to any or all of you. Any comments are welcome.