Not a busy day for me today but here is something different. 

To heat the glass hull I put it inside my oven of material used in garage doors 

put a milk bottle of boiling water at each end and close the ends off. 

I put a thermometer in the side .The temp will reach 40 degrees and i change

the water when the temp lowers to below 30degrees doing this for 12 to

24 hours.

Cheers Ken