Good evening team.
Christmas challenges - have to confess I have no idea how you work these out.
Take the image into Photoshop or similar image editing software and invert. This makes black white and white black. Then print a few copies.
Sit at desk with pen and start connecting dots.
If you examined Graemes' clue, it was rather obvious that he was referring to an Abbo boomerang. Get CAC Boomerang profile drawing and try to make it fit. I almost got it right.
As for the latest challenge - I know the answer since I posted it on behalf of John.
However, only he should therefore confirm or not. If that has not happened in, say, an hour or so then I shall do it to avoid thread stall.
LM