Hi Milk jugs full of water work pretty well for added thermal mass. For some odd reason the typical fridge seems to be able to “accept” a number of them …..
A small fan to keep the air moving and knock down gradient based issues is a relatively cheap improvement. Bob > On Jan 8, 2022, at 4:25 PM, Poul-Henning Kamp <[email protected]> wrote: > > -------- > Attila Kinali writes: > >> Oh.. and if anyone is going to build a DIY oven for some instruments, a >> 55x35x30cm >> styrofoam box with 2cm wall thickness, suspended in air has a thermal >> resistance of >> approximately 3K/W. But beware that proper seating of the lid is quite >> critical as >> that alone can drop the thermal resistance by a factor of 3 (guess how I >> know). > > Sorry for repeating myself about this: > > If you want a good thermally stable enclosure, pick and old freezer > or fridge, leave it unplugged, add as many bricks as you can for > thermal mass and get on with the fun stuff... > > They come in all sizes, have well designed door closing mechanisms > and can often be had for free, when a working compressor is not > needed. > > If you need active temperature control, get somebody with the proper > kit to suck the gas out, and run water through the nice plumbing > already installed. > > > -- > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > [email protected] | TCP/IP since RFC 956 > FreeBSD committer | BSD since 4.3-tahoe > Never attribute to malice what can adequately be explained by incompetence. > _______________________________________________ > time-nuts mailing list -- [email protected] -- To unsubscribe send an > email to [email protected] > To unsubscribe, go to and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
