just read through the last discussion!
its really easy, you've got a bit of your lock with a hole going through it and a bit the same sort of size that fits nicely inside and turns round to open the lock, this has the key in! with me so far?
right, now you get a pen or something the same thickness (see the picture!!)
yes the picture is crude, i know this! but then again, so is this answer after reading all the other ones posted!!
stick the pen in the back of the big bit with the hole in, have it just behind the bit where the spring and pin go that you're trying to put in, then drop in the spring and bottom pin in, press it down so you cant see it anymore and slide your pen forwards a bit so you cover it and it doesnt spring back up! do this for as many pins as you want, coming forwards to the front of the lock, then hold the pen there, put the other bit of your lock with the key in back in, letting the bit with the key push out the pen.
i've tried to make this as simple as possible, but you
NEED that round bit to put in the lock, its is absolutely, 100% impossible without one, so get one! make one, buy one, use a flippin carrot cut to size! anything the right size will do! just make sure you use one!
~ Master in Training ~