Intro: Magnetic Hex Extension Keyring
It's time to treat someone at Christmas. A simple value added gift will bring joyful to the world.. er him, my best friend who helped me survive my financial crisis once. A hex bit extension from used parts as a gift? Shame on me. Well, but this is classy, portable, useful and unique. You could not find one in the market. It is made with love.
Normally I will show you how it works at the very last step. Today, this special gift, I will show you why I called this "value-added" and how it works.
- Keyring : 1" (3 mm wide) Gold color gives a classy look. Strong and portable. Give a good grip and torque with your thumb and pointer to drive a screw in or out.
- Magnetic Hex Bit Extension : Support standard 1/4" hex bits so you can carry your favorite most useful bit. The strong magnetic will keep the bit in place without fear of loosing it, yet it is easy to pull and switch. The shiny chrome finishing presents classy look.
- Leatherman Compatible : It is redesigned to fit into some Leatherman's products namely Skeletool, Signal, Charge, MUT, Wave, Surge (certain varians may not support the plug-in bits). The Leatherman's bits are also fit into the extension because they are made based on standard 1/4" hex.
- In some cases, you cannot drive your screw in or out of a tight space with your bulky multitools, then you need an extension to finish the job.
I am sure he owns a Leatherman Signal and I am pretty sure he will love this keyring. The extra bits are nothing to count, but those are bonuses so that he can pick his favorite bit to carry. This is a kind of DIY gift from a person having financial problem :D
Interested to make one? I will make one for myself ^_^
Step 1: What You Need
Actually you can make one from brand new stuffs at cheap. All we need are :
Hex Quick Release Magnetic Screwdriver Extension Bit Holder 1/4". Mostly sold in set of three sizes or ten of the same size.
Power Drill with 3 mm and 3.5 mm drill bits.
A set of files.
Center punch and Hammer.
Step 2: Shape the Hex
Leatherman's bits are using 1/4" hex, that is 6 mm, but they slimmed it to 3 mm at two opposite sides of the hex. Now we do the same to the full 6 mm extension. We need to file 1.5 mm off of each sides (opposite) to reduce a total of 3 mm. Keep filing and measuring and try-fitting into the Leatherman clip until you get the perfect size (3 mm). Make a shallow lock-gap at 16 mm from the hex end with a triangle file or a saw. Keep trying at the Leatherman lock-clip to get the best gap size (about 1 mm gap).
Step 3: Drill a Hole
Now we drill a hole to let the key ring in. I picked a point where the key ring can serve good grip to my thumb and pointer, and also easily lock into Leatherman lock-clip without having to remove the ring. There it is as you can see in the picture.
Punch a small dimple with your hammer. This gives the tip of your drill bit a place to ride in as you begin to drill. It is not only about a good drill bit, but you need to maintain the pressure and low speed or you will break your drill bits no matter how good they are.
Drill a 3 mm hole and then enlarge with 3.5 mm to give a good space to the flat 1" key ring which has 3 mm thickness at its wide side.
Step 4: Handling Sharp Edges
Remove any sharp edges with files. For inner side of the hole, if you don't have a tiny file to fit into the hole, you can pick any thin screw, long enough to provide good grip. Scrubs all the sharp inner edges with the threads.
Step 5: The Ring
Another good trick is using a drinking straw to help sliding in the ring. Cut the straw 3 mm then cut off one side so that we can spread it into a rectangle. Fold the rectangle in the middle and put it in the hole. The smooth surface of drinking straw prevent scratches on both the extension hex (if you decided to give a new paint on it) and the ring.
Now it's time to pick a box, ribbon, and send it. It will be delivered in time just before Christmas.
My Friend, and all Instructables Crews and Members ^_^