This looks like a fun little project that I think people here would enjoy! I have a little stack of tin foil takeaway boxes that I could use for this. Just need to get hold of the plexiglass (or the oven bag they suggest, but I'd like to do it entirely with reusables if possible).
I've done this and it definitely works, but it's also finicky for sure. What I'd really like to know is how to build a DIY evacuated tube. AFAIK, the current very best designs for a solar oven use one, and almost nobody seems to manufacture the things.
Yeah exactly! I'm not sure how they're made... Maybe like a vacuum chamber that is also a glovebox? So you could put the tube+lid in the chamber, evacuate the atmosphere, use the gloves to apply the lid, then release the vacuum? Do gloveboxes work under vacuum?
I've done this and it definitely works, but it's also finicky for sure. What I'd really like to know is how to build a DIY evacuated tube. AFAIK, the current very best designs for a solar oven use one, and almost nobody seems to manufacture the things.
Like this kind of thing?
https://en.wikipedia.org/wiki/Solar_cooker#Vacuum_tube_technology
Yeah exactly! I'm not sure how they're made... Maybe like a vacuum chamber that is also a glovebox? So you could put the tube+lid in the chamber, evacuate the atmosphere, use the gloves to apply the lid, then release the vacuum? Do gloveboxes work under vacuum?