Hi, Alan said: >I'll bet Roger Mason (among others) has some ideas, or perhaps a >design. > Funny you should say that!! I didn't realise that your cursory glance around the workshop took in just so much, when you were here last year!! I have got a couple of devices which sort of work. One is a commercial device which I picked up at the local club auction. Unfortunately it won't take very large items. The other is a home made device, which if you leave it on too long starts acting like an electric oven and starts to leak the magic smoke, which we all know must be retained for things to work. Stan, if you want to experiment, bring your screwdrivers around and we can play! Cheers, Roger Mason, in St. Agnes. MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.