Looks pretty damn nifty to me. I'm about to mold mine up....One thing I'd reccommend is get a decent set of scales as my first molds were pretty poor and one didn't work at all. These a re a few tips Neil Gorton of Millenium FX gave me
"try and get ones that do between 2 and 5grams minimum increments. 2gm being preferable. Imagine if you want to weigh a 100gm of silicone. The catalyst at 10% will be 10gms but if you have scales that only go in 5gm increments you could weigh out up to 14gms and still it will read as 10gms.
At least with a 2gram increment you can get within 1gram of being accurate on small volumes."
He also said that for the first two thin coats of silicone you shoud use 11% catalyst instead of 10 and add a few drops of the accelarator. I made the mistake of throwing in a ton of catalyst as I wanted it to cure NOW
but all that did was make the rubber weak that when I demolded the piece the rubber tore as too much cat weakens it a lot.
when you want to build thickness you can use cheap mutton cloth instead of bunging in a load of thixo, simply dip it in the silicone and drape if over the surface like you would if you used plaster bandages as a jacket mold.. This way you can get a mold of upto 4mm thickness from a load of silicone that cost only 20 quid or so, then you can do a fibreglass or plaster jacket and get tens of pulls out of it.
Anyways enough rambling......I think you're onto a winner with this one mate. Nice work.