[JMay]

A while ago I released a STL file to create a handle to take the 4mm hex bits, so I could have a range of drivers to go in the pit box with blade, pozi & allen drivers pre-fitted (3F solution see below). One of the problems with the 4mm hex allen drivers is that they are too short to get to the wheel grub screws without leaning on the tyre or with the shallow hubs the wheel itself. Other parts like motor screws are also a problem. So for these I was using plain allen keys to get the reach. Problem with that is as you get older (62 now) your finger fumble factor (3F) increases and I have lost count of number of the Slot It allen keys flicking up and disappearing over the bench edge and seeking passage to biro heaven in the most inaccessible recesses under the bench.

Solution as I saw it was to put the allen keys in a holder, hence the design below.

   




This has a hole to take either the Slot It or NSR sized allen key and a slot to allow the allen key to be pushed down until it reaches the bottom of the slot, this also stops it from twisting in the holder. The cap (red) then slides over, the key section goes in the slot and centralises the allen key and then locks on the curved section at the bottom of the travel, but can still be prised off if the allen key is beyond use.

By opening up the hole and slot and adjusting the key on the cap then you can cater for other sizes, i.e. I made one for the BRM allen screws.

Note: depending on printer/print setting then the hole/slot may need some fettling either on the print settings or with a drill/file for best fit.

Allen Key Holder.stp Size: 207.34 KB  Downloads: 2

Allen Key holder.dwg Size: 77.02 KB  Downloads: 1

Allen key holder 1.stl Size: 2.73 MB  Downloads: 6

Cheers
John