N.B. This design has been superseded by this one which has a print in place retainer and is available in a wide range of sizes.

I designed a locking 22mm pipe clip to secure a keyboard stand on which I'd previously been using ordinary pipe clips which became loose.

In order to use PLA I had to make the securing piece separate, but it clicks on very securely and holds the pipe in place perfectly. I can remove the pipe from the clip by sliding the top piece sideways.

The green one (V1) in the photos is the first effort to check the size and function. I then refined the design to come up with the black one (V2) which works really well and uses less material.

I printed the V2 with 100% fill, but you could get away with a low fill % if you use the V1, although it would be a good idea to increase the number of walls to ensure the integrity of the top part.

There is a 4.5mm diameter countersunk screw hole for fixing the clip in place.