Simple Sleeve for Sparrows practise lock cylinders

thingiverse

I designed a quick sleeve for holding Sparrows training lock cylinders, which proved too awkward to grasp directly in your hand. I discovered that the gap in front of the keyway caused issues when clamping them in my vice, as there was no room for the pick to rest against pin 1.\r\n\r\nTo remove the cylinder, you can stick a key into place and turn it 90 degrees. Alternatively, if you don't have a key, there's a 4mm hole at the back that allows you to poke the cylinder out.