I managed to scrounge an aluminium piston from a local marine engineer (he repaired our boat engine......) and intend to see if I can produce the pistons for the Seal engines from it. I am working on the premise that if its good enough for full sized engines then it will be good enough for the smaller scale Seal.

I am hoping to get all 8 pistons from it but until I cut it up and see how much 'meat' there is in each segment I won't know. Still nothing ventured as they say........come back and see how I get on..