I made it at TechShop http://www.techshop.ws

Second place winner of the Father's Day Challenge.

Is your Dad a member of TechShop? Maybe he works for the big blue oval (if he does, you know what I mean), or maybe some other company the uses security badges?

Here is a great gift for Dad... Make him a retractable badge holder that he can actually use! Who doesn't need a tape measure from time to time?

10 ft Carabiner Tape Measure  (Harbor Freight  $0.99)
Key ring
Electrical Tape

Tools: (all available at TechShop)
Metal shears or scissors
Bench grinder with wire wheel
Spot welder

As with all Instructables, read ALL of the instructions first, before starting your project.

Step 1: Modify the tape measure

Start off by extending a length of the tape measure, and locking it in place.

Clip off the end with a pair of shears or scissors.

We will be making a loop to hold the keychain, so in order for the spot welder to work, use a wire wheel on a bench grinder to remove all of the paint in the areas of contact (spot welders work by making electrical contact). 
you inspired me.
Thank you for saying that. I recently made another one of these, and completely skipped the spot welding, and just held it together with the electrical tape. It seems to be doing fine.
Update folks! I found a very similar carabiner tape at Lowes. It wasn't as cheap as the Harbor Freight tape, but I think it was only about 5-6 bucks, which is pretty good for the convenience. My badge retractor snagged and broke a few days ago, and I went looking for a replacement. I think I am going to buy one tonight :-)
Another update. The one I bought at Lowes was $2.98, so a little better price than I first thought. The retraction spring is a little weaker than I like, but I made it, and it is working. Thanks again to lime3D for the idea!
If the hook at the end of the tape is sturdy enough you could drill through the rivet. Then you could put the split ring of the badge through the hole and still have a functioning tape measure. Depending on the size of the rivet, it might even be possible to drill a small enough hole to allow the rivet to function as it should; holding the hook on to the tape.
Yes, maybe with a larger/stronger tape measure. The metal on these little ones is pretty narrow and thin, but I suppose you could try it. If it doesn't work, you could always cut the end off and do it like I did.
This is so brilliant! All these years I have been running around with a retractable badge holder, and fixing them when they broke, when I should have replaced them with something useful. This is really one of those "Why didn't I think of that?" moments. Thanks!
To be honest, I don't even know how I thought of it. I just sort of popped into my head while driving to work. (My best designs usually occur while driving or in the shower!)
Good idea. I plan on doing this for myself for work, but instead of welding I'm going to use pop rivits. Thanks for the idea!
You could probably use a good epoxy too.
Love it!

About This Instructable


9 favorites


More by lime3D: Make your pumpkins live longer Worlds' easiest sugar skulls Haunted Tombstones
Add instructable to: