Sorry for the lack of progress folks, we had birthdays, and then a scary earthquake, and work has been mental. Oh, and then it was our wedding anniversary this week and we were out for the weekend, but I managed to skive off for a couple of hours this afternoon and do some modelling. I reckon I need to get the sniper mounted so I can do all the in-situ painting and other bits and bobs, so I've been working towards that.
I settled on a place to stand him, making sure that the gun and bipod don't foul the concrete blocks, and the cable is long enough to reach the sensor. Then I drew around his feet and gouged out the texture and filler with a screwdriver so he can stand directly on the flat MDF. I painted the cut edges brown and will fill in with more earth mix when he's installed.
To make the mounting secure, I drilled up into the legs (from inside the heels) about half an inch and inserted some thickish brass rod to make mounting pins. It took two tries to get corresponding holes drilled in the base because the pins exit the feet at a slight angle.
Flickr linkI then set the figure in place again (not glued yet) and marked the sensor location on the concrete block. I drilled up from underneath with a power drill, and then fed a brass tube up into the block to complete the cableway. With that in place I could poke a hole for the wires through the front face and check it met.
The florist's foam is a pain - easy to make holes in, but very hard to fish wires though because it's so soft. As soon as the wire hits the foam it will dig in rather than follow a pre-drilled hole. In the end I got it to work by catching the end in a brass tube inside the hole, feeding in enough wire, and withdrawing the tube. It helps to use both hands so you can feel all the contacts (or lack of them) between the wire and the tube.
Once I've finished detailing the sensor I'll solder the wire joints on the rear face, and pull the LED wiring through using the beading wire which is in there at the moment. Oh, and I drilled out the base with a big spade bit to make a recess for a button cell.

Not very exciting pictures, but it is legit progress! I'll try and do some more tonight.
Will