Uploaded December 2020 | Updated September 2026, 1 week ago
DIY metal lathe series – Update #2. I show a tool I've made to conform the lower side of the ways of the lathe with the upper side. While the ways have been made flat after several stages (see my last update for more details here: youtu.be/wRTY7FXOd5I or older videos of this series) the lower side was not yet ready. I've made the upper sides of the ways flat with a tolerance of +/- 0.01 millimeter, along the whole length of the ways (860 millimeter). The lower side however was not yet made flat and should conform to, in other words should follow, the upper side. So I've made this tool to perform this job. The lower side is less important than the upper side as it has the function to keep in place the carriage and to reduce the vibrations when the lathe is used to mill parts.
This tool is used to make a gross removal of material, while the fine work will be performed with the aid of a stripe of emery paper glued on the retainer of the slide.
In this update I also mention the boards that I've designed to build the motor drivers. Since these boards are not yet fully assembled I just make an anticipation, while more details will be shown in a future update.
Follow the whole series (playlist): youtube.com/watch?v=KSE7DORiYfs&list=PLwbCeSU2Kq_wrUUInSUWJksA-LHhhMhFx
Last Q&A + Update video: youtu.be/wRTY7FXOd5I
DIY metal lathe series – Update #2. I show a tool I've made to conform the lower side of the ways of the lathe with the upper side. While the ways have been made flat after several stages (see my last update for more details here: youtu.be/wRTY7FXOd5I or older videos of this series) the lower side was not yet ready. I've made the upper sides of the ways flat with a tolerance of +/- 0.01 millimeter, along the whole length of the ways (860 millimeter). The lower side however was not yet made flat and should conform to, in other words should follow, the upper side. So I've made this tool to perform this job. The lower side is less important than the upper side as it has the function to keep in place the carriage and to reduce the vibrations when the lathe is used to mill parts.
This tool is used to make a gross removal of material, while the fine work will be performed with the aid of a stripe of emery paper glued on the retainer of the slide.
In this update I also mention the boards that I've designed to build the motor drivers. Since these boards are not yet fully assembled I just make an anticipation, while more details will be shown in a future update.
Follow the whole series (playlist): youtube.com/watch?v=KSE7DORiYfs&list=PLwbCeSU2Kq_wrUUInSUWJksA-LHhhMhFx
Last Q&A + Update video: youtu.be/wRTY7FXOd5I
![How to spot a fault in a circuit, like a pro : hands on electronics [1]](https://i.ytimg.com/vi/ye9dguKy_Cs/mqdefault.jpg "How to spot a fault in a circuit, like a pro : hands on electronics [1]
In this video I show the method to find out a fault on an electronic circuit board. In the specific case we have an ESC (Electronic Speed Control) that is used to control a washing machine motor (used to drive the spindle of a lathe) and somewhere in the circuit there is a faulty contact. It turns out it was a bad soldering that caused an uncertain contact, making the motor to start and stop randomly. The video shows the procedure to spot the exact point where the fault is present.
Wonder how to #faultfinding without schematic? Watch this video too: https://youtu.be/yjxuMwLN7zI
For more related/complementary content over my videos please visit my website accidentalscience.com.
Watch the full series of electronics: https://www.youtube.com/watch?v=ye9dguKy_Cs&list=PLwbCeSU2Kq_zORt4un2iQ3JUYxzWF3cTJ
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Website: https://accidentalscience.com")
![The mindblowing #photoacoustic effect: #light makes materials to play #sound! - [Redone video]](https://i.ytimg.com/vi/zIQXlf1qLsM/mqdefault.jpg "The mindblowing #photoacoustic effect: #light makes materials to play #sound! - [Redone video]
A piece of fleece generates sound just projecting a modulated light! No electronics involved! (Aside the light modulator.)
*This plays sound JUST with light!*
I reproduced an experiment that led to the definition of the photoacoustic effect. This effect has been first discovered by Alexander Graham Bell, the inventor of the telephone and of the photophone. While this effect is widely exploited in photoacoustic spectroscopy, it is often overlooked by many.
So with this video I bring it to light ...so to say :-)
After a first failure in reproducing the experiment, after some research I managed to achieve results.
Encouraged, I developed a special #LED driver. The final result is amazing: a simple piece of fleece emits #music just for the radiated modulated light!
The effect is regarded to be caused by light induced thermal expansion and contraction of materials.
In doing this experiment I also stumbled upon a weird response from a piezoelectric sensor, with an unexpected and interesting effect that I showcased in a bonus extra section of the video.
Remark: This video has been redone because of missing content and technical issues in the originally posted video.
Full series of #Experiments: https://www.youtube.com/playlist?list=PLwbCeSU2Kq_wbNEUGGWLkCgvLpUz3eP-k
Full series of #Electronics: https://youtube.com/playlist?list=PLwbCeSU2Kq_zORt4un2iQ3JUYxzWF3cTJ
Visit the website: https://accidentalscience.com")
