New crucible furnace design - hands-free lid.

Beautifully done. Subscribed, and thank you

Clever design! Thanks for sharing!

I have an old 12" propane burner set up with a 6inch burner in the center. Can I use that for the heat source to make a smelter

I love the lid lifting design! 👏🏻

Good point regarding flammable/volatile substances that may have been in a drum or cylinder - I met a severely disabled man back when I was a teenager, he used to bring his recumbent tricycle into the bike shop where I worked. He was a farmer until he cut open an empty 44 gallon drum that had had petrol in it. The resulting explosion almost killed him

Thanks for publishing this. Curious what the warm-up time is for this furnace - does the thermal mass of the volume of refractory cement cause issues? On other videos I've seen only a skim of refractory used, hence the question.

ACHIEVEMENT UNLOCKED 🔓

The lid is magnificent.

The metal wire in the lid will expand and contract with heating and cooling, destroying the cast refractory. :( I don't know of a solution unfortunately.

Hi i am from indonesia, and i am a teacher, it is nice to see a new bright idea here,

I don't get what makes the lid spin...Is it just the raising of it makes it spin and follow the j slot?

I'll take 2!

That's REALLY slick. Well done.

Love the lid action.

Impressive design and build

The range of skill’s you’ve developed is impressive, welding, fabrication, machining, electrics, electronics, control engineering and 3D printing! I’m sure there are more…..

What intrigues me most about this is my friend Tutankhamun whom I met in Kairo... what they made 3000 years before us. Made me shrink to an inch.

What's the burner you're using?

I like your use of momentum for the hands free lid mechanism!

Beautiful application of my designs!! I kid.
Isn't it amazing how different people around the world can have near exactly similar ideas without ever interacting?? I'll get mine built eventually. Love the video!

Very cool cover solution.

Best one I’ve seen so far

My furnace at the moment comprises of two thermolite building blocks stuck together and hollowed out lol. Time for an upgrade. What is the capacity of this in aluminium/brass terms?

Another seriously brilliant design. Very impressive, Love the lid mechanism.

This was awesome! Thanks for sharing!

Thanks for sharing, Really like your hands free design. Thumbs UP.

I love spot weld trick !

Very nice work. I like it.

is it possible to get 1500c temps without burning furnace ? for iron smelting

Bigger furnance design means bigger T2 Castings coming up !! :)

Is your metal saw made from David Gingery’s design?

Very neat realisation, and video. Thumbs up.

Muy bueno! saludos inge

Great design.

Similar design to one we had, yours is just a touch smaller.

But I have got to say, dont work with aluminum or other molten metal over concrete, if it spill it can spall and splatted molten metal everywhere. Work on dirt, grass, sand, even plywood will work.

He says "Never do this with any cylinder that once contained a flammable gas" after showing the previous version made from a propane tank.

Nice video!

Good advice about grinding cylinders that may have had flammable gasses in them.

If you do have cylinders that had LPG in them you can take the valve off (obviously only when empty) then fill them with a hosepipe until overflowing. Tip the water out and then they're suitable to cut. Nice thick steel too.
I've only done it for calor style tanks, but I think they're worth a bit more now as empty cylinders.

Good job, I may do the same one day.

I turned one helium bottle into a vacuum chamber, for the cost of 6mm weld on flange (£50). Vacuum chambers that size are normally around £400.

Excellent build!
But not to show demoulding of that pour at the end - that's just cruel)

Really clever lid on that thing!

Neat design andy, I would have added a bit extra height tho so you can add a plinth block, you dont want the burner flame to come in contact with the crucible, otherwise you'll end up spalling the crap out of the crucible and ruining it. A plinth block puts the crucible up above the path of the burner.

Best lid design I’ve ever seen!
Big thumbs 👍

Hi Andy. Well, I've seen a few of these being made, but I wasn't expecting that delightful lid action!
Both on and off. Excellent. Your idea?
Might well get round to making one of these and your version seems significantly simpler than some others. Thanks for sharing.
Regards Mark in the UK

Brilliant!

impressive!

Nice work... Love the hand's free lid, I think that may be an idea I'll pinch when I get around to my upgrade :)

Perfect and usefully