|
Make one from Nichrome wire. Connect about 1m of the wire to 12v and feel the wire. Slide one end of the power wires along the Nichrome until the wire is just warm. That should be enough. I wrapped my scope tube in tape them wound the wire around the tube and then covered the lot with more tape and finally some neoprene (any thin flexible foam will do) you will need stuff all power to keep the tube warm.
I know this description is pretty vague so let me know if this makes no sense.
|