Uploaded January 2026 | Updated September 2026, 1 week ago
Another Santa-sack of technical goodies from AliExpress for us to explore.
Here are some links to the items on AliExpress (not a sponsor).
These are affiliate links, but that will not affect the price you pay.
Keep in mind that these products may not meet your country's standards.
Some listings may not work for some countries and some may just be sold out or disappear.
The very weird galvanic-isolator anti-shock plumbing adaptors:-
https://s.click.aliexpress.com/e/_c3aHW0ev
The hex-bit wire brushes:-
https://s.click.aliexpress.com/e/_c3wkNnOH
The USB/battery display turntable:-
https://s.click.aliexpress.com/e/_c4ppOXaH
The emergency style battery powered bulb. It claims to be universal voltage, but has a linear regulator inside. I've since explored this and it's terrible in many ways. Only buy one for experimentation - and don't leave it on for any length of time as it can overcharge the lithium cell.:-
https://s.click.aliexpress.com/e/_c3soDzZj
Not-Lego mushrooms:-
https://s.click.aliexpress.com/e/_c4l1aRpb
Autism frog badge:-
https://s.click.aliexpress.com/e/_c4ekl9s1
"For rectal use only" stickers:-
https://s.click.aliexpress.com/e/_c2xQgxBR
Over/under voltage and overcurrent relay:-
https://s.click.aliexpress.com/e/_c322k9Jr
Electrical noise filter:-
https://s.click.aliexpress.com/e/_c3MTg2qp
Fake mini gold ingots:-
https://s.click.aliexpress.com/e/_c39DGFt3
Spiral filament USB light:-
https://s.click.aliexpress.com/e/_c3Hxr3A5
Time delay module - one of many on this listing:-
https://s.click.aliexpress.com/e/_c372H5JP
Shady Christmas light controller:-
https://s.click.aliexpress.com/e/_c3Z8hOhf
If you enjoy my videos then the easiest way to support the channel is to subscribe and enjoy my videos. But if you would like to contribute a dollar or two for coffee, cookies and gadgets to take apart, you can do so by supporting me on Patreon. I release videos without adverts for critique and feedback on Patreon as soon as they have been made. I also do Patreon live streams, which are much more relaxed and chatty than the busy public ones.
patreon.com/bigclive
Alternatively, for a single coffee contribution you can use PayPal:-
paypal.com/paypalme/bigclive
#ElectronicsCreators
Another Santa-sack of technical goodies from AliExpress for us to explore.
Here are some links to the items on AliExpress (not a sponsor).
These are affiliate links, but that will not affect the price you pay.
Keep in mind that these products may not meet your country's standards.
Some listings may not work for some countries and some may just be sold out or disappear.
The very weird galvanic-isolator anti-shock plumbing adaptors:-
https://s.click.aliexpress.com/e/_c3aHW0ev
The hex-bit wire brushes:-
https://s.click.aliexpress.com/e/_c3wkNnOH
The USB/battery display turntable:-
https://s.click.aliexpress.com/e/_c4ppOXaH
The emergency style battery powered bulb. It claims to be universal voltage, but has a linear regulator inside. I've since explored this and it's terrible in many ways. Only buy one for experimentation - and don't leave it on for any length of time as it can overcharge the lithium cell.:-
https://s.click.aliexpress.com/e/_c3soDzZj
Not-Lego mushrooms:-
https://s.click.aliexpress.com/e/_c4l1aRpb
Autism frog badge:-
https://s.click.aliexpress.com/e/_c4ekl9s1
"For rectal use only" stickers:-
https://s.click.aliexpress.com/e/_c2xQgxBR
Over/under voltage and overcurrent relay:-
https://s.click.aliexpress.com/e/_c322k9Jr
Electrical noise filter:-
https://s.click.aliexpress.com/e/_c3MTg2qp
Fake mini gold ingots:-
https://s.click.aliexpress.com/e/_c39DGFt3
Spiral filament USB light:-
https://s.click.aliexpress.com/e/_c3Hxr3A5
Time delay module - one of many on this listing:-
https://s.click.aliexpress.com/e/_c372H5JP
Shady Christmas light controller:-
https://s.click.aliexpress.com/e/_c3Z8hOhf
If you enjoy my videos then the easiest way to support the channel is to subscribe and enjoy my videos. But if you would like to contribute a dollar or two for coffee, cookies and gadgets to take apart, you can do so by supporting me on Patreon. I release videos without adverts for critique and feedback on Patreon as soon as they have been made. I also do Patreon live streams, which are much more relaxed and chatty than the busy public ones.
patreon.com/bigclive
Alternatively, for a single coffee contribution you can use PayPal:-
paypal.com/paypalme/bigclive
#ElectronicsCreators



![Making a laser lumia/aura effects disk - with a slight silicone disaster
The Lumia or Aura effect is created by shining a laser through rippled glass, but it can be difficult to find the right glass, and someone who can cut a circle from it for you. This was an experiment to use a standard filament based 3D printer to create a silicone mould for optically clear resin.
This was my first attempt at creating a mould with liquid silicone. Apparently platinum-cured silicone is very fussy about what its used with, and my master shape was fine on its own, but when pre-textured with UV cured resin it prevented the silicone from curing in that area and caused an outgassing effect. Even with ordinary two-part resin the silicone still stayed slightly sticky where it was in contact.
In the end the answer was to use the 3D printed PLA mould on its own and add the effects onto the cast resin disks afterwards.
When using UV curing resin I strongly recommend wearing gloves to protect your hands from contact with it. The chemicals used to make it light sensitive can also make your skin sensitive to sunlight.
This is an experimental device. I dont know how the resin will hold up to specific wavelengths of laser energy. Its also probably limited to low power lasers for safety. The disk can also be used with various styles of LEDs for an aurora borealis effect.
For laser use the disk should rotate very slowly to get the best optical warping effects.
Heres the OpenSCAD script that creates your custom mould for this project.
There are two adjustable variables - one for the outer diameter of the disk and one for the central hub where it attaches to a suitable motor. The script will automatically place a small central indent for aligning a drill if needed.
OpenSCAD can be downloaded for Windows, Linux and Mac (plus others) from the official site:-
https://openscad.org/
To use the script, copy and paste it into the left hand editor window in openscad. You can either adjust the two variables directly in the script or you can enable the customizer that will open a window to do it.
If you want to use the customizer then you can open it from the window drop down menu.
To see the results of any changes quickly, press the cube-button with two arrows on it. To do the full build press the cube-button with the hourglass on it, and when it is complete, save the file by pressing the STL button.
That will save a design file that can be used in your choice of slicer for 3D printing.
The script is below:-
//Ripple disk mould maker
//Diameter of disk in mm
dia=75;
//Diameter of central hub in mm
hub=20;
difference(){
cylinder(h=12,d=dia+12);
translate([0,0,1])
cylinder(h=12,d=dia+10);
}
difference(){
union(){
cylinder(h=5,d=dia);
cylinder(h=7,d=hub);
}
//Central drilling indent
translate([0,0,5.5])
cylinder(h=2,d1=0,d2=3);
}
$fn=100; Making a laser lumia/aura effects disk - with a slight silicone disaster](https://i.ytimg.com/vi/5yNYqsbBkJM/mqdefault.jpg)






