Due to popular demand on TMP (well confusion anyway...) I've done another post on my 15mm movement trays just to try and clear up any loose ends. I don't have time to do a full step-by-step tutorial but this pretty much covers the important stuff.
The bases themselves are to FOW dimensions and laser cut in MDF by warbases.co.uk (I highly recommend their service). The fit is nice and tight (I supplied samples of my mini's bases) but the 18mm holes needed a little sand to account for the paint layers on my bases. I used some sandpaper wrapped round a tool hand for ease.
This is 0.5mm self-adhesive iron paper from TinyTinTroops.co.uk. It doesn't need to be be adhesive, its just what I had to hand. I simply stuck it on some paper to get rid of its adhesiveness.
Stick a blob of paint on one pole and take them from the other side, this should help you to get all the polarities in the same direction. This isn't particularly important but I find it irritating when they stick to each other in transport, plus knowing my luck it'll turn out to be important somehow in the future if I don't do it.
Stick some filler on your movement trays to make them match your mini's base heights and then texture, paint and tuft or flock or whatever you like to do. (I haven't had time to do more than one of mine yet).
Pop your 15s in your movement trays and have fun making up new squads, attachments, heavy weapons teams and combinations.