Yes, I've considered putting something around the sides to reduce heat loss through convection. I've also experimented with putting aluminum foil (shiny side up) on the non-contact wood platform below the PCB to reduce heat loss on the bottom.
That's pretty much what I was thinking; increase spacing between traces toward the middle slightly (where the thermistor is taped). I do understand the need to keep the trace width perfectly even throughout, otherwise the thinnest part will have higher resistance and will heat much faster (I think the Joule heating goes something like the square of the resistance).
Thanks!
That's pretty much what I was thinking; increase spacing between traces toward the middle slightly (where the thermistor is taped). I do understand the need to keep the trace width perfectly even throughout, otherwise the thinnest part will have higher resistance and will heat much faster (I think the Joule heating goes something like the square of the resistance).
Thanks!