Hi,

I was thinking how to glue the heaters to the vat. Also the vat is hollow inside. This was a concern for people, because air is bad conductor of heat. 

I found this glue AS1803. On paper it has pretty good thermal characteristics, which one is to expect for 85 euros. I used to fill the gaps and attached the heaters to the vat. 

I ran a test, with the hollow vat + high temp double sided tape / fancy glue and filled gaps. This is the result:

I recorded the temperature of the heaters and the temperatures of the inside of the vat. In both cases the vat reached 51° the only difference is that it reached it one minute faster.

Is the tape the best - no. Does it make sense to spend 80 euro for one minute improvement, also no.

The tape is way easier and cleaner to use, the only tools you need is an exacto knife.

In conclusion: I am relived that this expensive glue did not do a much of a difference and in general that the hollow vat is not a concern. 

Cheers,

M