I have been trying to work out how to make the circular fan cover for the roof,

In the end I couldn't come up with a clever plan so had to resort to cutting and filling it out of a piece of 60thou plasticard. I marked it out, drilled holes, then opened them up with a square needle file an hour of filling later I had a grid pattern and I just needed to cut off the outside to make it circular. Then glue on. I must be mad ??

I did have plans to cut out under the grill but decided it was far to fragile to be self supporting as a grill so I guess I will cheat and paint it black between the vents ! Not sure it would have been good to have a big hole in the top if it ever got caught running out in rain !

The only other thing happening is sanding and filling ! Every time I think I have got it right I give it a light dusting with primer and find a lump or hole i have missed !!! But there are less now than there was !

These last couple of shots have the OO Bachmann 25 riding piggy pack to answer a couple of people question as to just how big this is..