Nice work! I produced my own sulfur globe late last year, it was only the second one I'd ever seen on YT, and yours is the third! I really like the more controlled and gentle process you used with the oil bath. Shame to use a round bottom flask, but worth it IMHO, it's not like we're mass producing these things.
Thank you😊 I bought the round bottom flask used, just a few bucks. The machine I show here I built for this year's Christmas lecture by Dr. Andrew Szydlo at the Royal Institution in London. It seems we both have the same passion, building old scientific instruments 🤩
@@Marbslab Love the Christmas lectures, good stuff. And there's just hardly a better way to show how scientific ideas have progressed than to read the original sources and reproduce their work, IMHO. Makes the whole thing feel collaborative and gives a better sense for challenges and patterns of thought. Looking forward to seeing more from your channel!
Could I ask what the lower spindle/bearing is for? I get the belt goes round a big wheel on the crank and a small one on the ball to increase the speed of rotation but I don't get the purpose of diverting the belt to the lower pulley?
Hello nice video ! I have one large model and i’m looking for repare my sulfur ball ?! Or make one new ball !? Where can i find sulfur ? Many thanks bests regards jérémie
I designed the machine myself in Inkscape. I used three multiplex plywood boards with a length of 30 cm, a height of 20 cm and a thickness of 1.5 cm. I bought the wooden feet on Amazon: www.amazon.de/dp/B09D3Y14V3?psc=1&ref=ppx_yo2ov_dt_b_product_details
@@Marbslab Thank you very much for the prompt reply:-)) What is the approximate diameter of the the sulphur ball and were I can find to buy sulphur as I live in Malta an island in the middle of the Mediterranean so it not easy to get certain stuff:-((Actually I am an old stationary engine collector so now I want to do some light stuff!!!! Here is a sample of my engines, these are some steam engine which I have restored!! ua-cam.com/video/iyvqs5Fb4Oo/v-deo.html And these are two Stirling engine fans which I also restored they were very dilapidated:-(( ua-cam.com/users/shortswW6dHVHTD8Y
@@johnhili8664 The sulfur ball has a diameter of 13 cm. Unfortunately, I have no idea how to buy sulfur locally in Malta, but there is sulfur powder on Amazon (usually 1 kg in a plastic bottle), so should not be a problem.
@@Marbslab Thanks just the same, it will be very difficult to buy Sulphur on the internet here the customs people are very strict regarding importation of chemicals!! I just remembered I have some friends who work in a fireworks factory they might be able to help:-))
Thanks you. A leather belt would be closer to the original, but I use a timing belt that has the advantage of not slipping. The machine is for an upcoming Christmas lecture in chemistry at the Royal Institution in London. Nothing can go wrong there.
Nice work! That is a piece of art. I love the music too.
Thank you 😊
Great video
Nice work! I produced my own sulfur globe late last year, it was only the second one I'd ever seen on YT, and yours is the third! I really like the more controlled and gentle process you used with the oil bath. Shame to use a round bottom flask, but worth it IMHO, it's not like we're mass producing these things.
Thank you😊 I bought the round bottom flask used, just a few bucks. The machine I show here I built for this year's Christmas lecture by Dr. Andrew Szydlo at the Royal Institution in London. It seems we both have the same passion, building old scientific instruments 🤩
@@Marbslab Love the Christmas lectures, good stuff. And there's just hardly a better way to show how scientific ideas have progressed than to read the original sources and reproduce their work, IMHO. Makes the whole thing feel collaborative and gives a better sense for challenges and patterns of thought. Looking forward to seeing more from your channel!
Nice work as always 👍👍
What kind of oil did you use?
Silicone oil, but you can use any cheap cooking oil. Sulfur has a melting point of 115°C/239°F.
Thanks very kindly.
@@Marbslab wow, lower then zinc, thank you!
The song reminds me of Pink Floyd - Time
Very nice
Could I ask what the lower spindle/bearing is for? I get the belt goes round a big wheel on the crank and a small one on the ball to increase the speed of rotation but I don't get the purpose of diverting the belt to the lower pulley?
The lower pulley is used to tension the belt. It can be adjusted by means of a slotted hole.
@@Marbslab Thanks for the clarification
Hello nice video ! I have one large model and i’m looking for repare my sulfur ball ?! Or make one new ball !? Where can i find sulfur ? Many thanks bests regards jérémie
Thank you. You can buy sulfur powder for example on Amazon.
Very interesting instrument were did you get the dimensions/ drawings please??
I designed the machine myself in Inkscape. I used three multiplex plywood boards with a length of 30 cm, a height of 20 cm and a thickness of 1.5 cm.
I bought the wooden feet on Amazon:
www.amazon.de/dp/B09D3Y14V3?psc=1&ref=ppx_yo2ov_dt_b_product_details
@@Marbslab Thank you very much for the prompt reply:-)) What is the approximate diameter of the the sulphur ball and were I can find to buy sulphur as I live in Malta an island in the middle of the Mediterranean so it not easy to get certain stuff:-((Actually I am an old stationary engine collector so now I want to do some light stuff!!!! Here is a sample of my engines, these are some steam engine which I have restored!! ua-cam.com/video/iyvqs5Fb4Oo/v-deo.html And these are two Stirling engine fans which I also restored they were very dilapidated:-(( ua-cam.com/users/shortswW6dHVHTD8Y
@@johnhili8664 The sulfur ball has a diameter of 13 cm. Unfortunately, I have no idea how to buy sulfur locally in Malta, but there is sulfur powder on Amazon (usually 1 kg in a plastic bottle), so should not be a problem.
@@Marbslab Thanks just the same, it will be very difficult to buy Sulphur on the internet here the customs people are very strict regarding importation of chemicals!! I just remembered I have some friends who work in a fireworks factory they might be able to help:-))
Very nice work but instead of rubber belt you've to use leather belt
Thanks you. A leather belt would be closer to the original, but I use a timing belt that has the advantage of not slipping. The machine is for an upcoming Christmas lecture in chemistry at the Royal Institution in London. Nothing can go wrong there.
Hipnotic