Alan here from sunny Barnsley lol
I'm making a mould for a air intake to the air box on my Ford Focus RS its an odd shape and hopefully you could help me decide how many splits on the mould I would need ?
I need to sand down the joints then cover with filler before flatting then I plan to spray it to get a really good finish 

That's brilliant Steve Hopefully the plug should be ready to take a mould from sometime next week ' as I've a boost problem with my car ' I'm going to smoke test it this morning to see if I've any boost leaks before I start checking the sensors.