I've had this one lurking in my system for too long now and it needs letting loose. It's not perfect and any help would be appreciated, or even take it and just DIY! :o) Simple rules... · Click a spot to set the first cog centre · Move the mouse to set the size of the cog · Choose the cog to link to (you have one at the moment...) and click it · Use the mouse to set the next touching cog. · Choose the cog to link to (you now have two)... You get the idea. Give it a bash - you might even like it!
The meshing is not always 100% bang-on. I blame my old Chemistry teacher for that. There's no reason, but it makes me feel better. I really should do layers. Then you could make your own working clock! Try counting 60 teeth mind you...