I hate ASM!

[Oilybloke]

, but demethed by bringing up to 110c and circulating overnight @ 70c.,

I'm not sure I understand what you're saying, are you demething via a condenser? If not how do you know how much meth is left in the bio.

You're probably aware that meth in bio = suspended soap, methanol stops soap particles coalescing and dropping out.

Yes Jim, de-mething with condenser. Some recent discussions with Nathan showed that I had not been giving enough attention to de-meth (and hence the squirrel enquiry).

Jim, I have lost your email address, and would like some more details on the squirrel set up. Some pictures perhaps?

[K.H]

Just covering my arse with the exploding bit, there was a cycle valve fitted to release the pressure although I found something posher for Nathans, it works better with calcium hydride but as it is hard to source I left it out (that is what is used in the sandy brae kit)
It could really do with a small airtight metal container but I have yet to find one

Its a good design to make at home
Calcium carbide giving off acetylene rather than Calcium hydride giving off hydrogen might make it a bit safer? 
Do you think it would not be as accurate then?

Should be as accurate, its just grinding up the carbide that is time consuming and you get a quicker reaction with the hydride