Thanks very much Count'. 
Ok, the helmet is now in the hands of Mojo-Fett. He got it yesterday ready for moulding the lid. Also, he very kindly turned an aerator for this lid on a lathe!
The aerator isn't the same as a TK or the clones we see in EpIII. The idea is to use this one master part to mould and cast resin copies to include with the kit.
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Hope it looks good to you guys, I think he nailed it myself. Thanks Gav!! 