Lumia glass special cuboid shape

[TheHermit]

Indeed, it is a laser show, quite rich also. I will try with more basic repetative patterns. Thank you.

You're very welcome. I enjoy sharing my experiences and suggestions with others. With your OTC crystal, I would start with a simple circle and play with the vertical and horizontal sizes to enable manual control the lumia shapes, and modulate the colors.
If LaserShowGen is capable of creating square or pulse width waveforms, to mix/sum with the previously mentioned circle, then you can double the lumia effects along either axis and/or quadruple a beam by applying it on both axis. This will also overlay similar lumia clouds.
You can also slow down the square wave's frequency to jump lumia to the beat or strobe the effect.

It is also quite interesting how the colors are mixed. It is a DPSS laser projector with full analog modulation, i think a very good color gamut and it is represented very artisticly through the crystal structure.

Yes, a very slow sinusoidal RGB color modulation signal works great.
If you synchronize color changes with the square wave frequencies, then you can have different colored overlaid lumia.
Now, you're in control to be more creative.

This one crystal is very good for lumia effects, I think.

A motorized base to rotate the crystal would be a great addition to create random flowing motion to your lumia effects.
Doesn't need to be anything elaborate. A small geared 5VDC motor can be powered via a powered USB hub. Doesn't get much less expensive than these on Amazon, plus they're Arduino compatible to make their speeds programmable.
A large RC gear connected to the shaft provides a simple turntable base. The slower the gear ratio, the better for torque and to allow the eyes to savor the lumia effects. A potentiometer can be added for variable speed control. Great to be able to slowly accelerate from a static lumia background to more aggressive movement. The key for good 'shows' is the ability to milk as many variations out of a single effect as possible to keep it interesting, while maintaining continuity for viewers to easily follow the progression from simplicity to a complex climax.
I would expect, the whole assembly, inside a box would cost less than 30 euros. Great bang for the buck!
I suggest mounting the motor as close as possible to one side of the box so that vertical scan through lumia wheels, like the textured shower glass one Greg has pictured can be another option. 2 4 1 doubles the value.
Clickamouse has a great How To thread for making torture tubes, which are commonly used inside lumia projectors. These give you custom control on what the lumia effect will look like and save money on purchasing OTC crystals. Here's another lumia thread with all of the details for sourcing bits.
TBH, while focusing on developing the T4 Laser Synth, I haven't had the time to build my lumia projector, yet. But, I've been considering my numerous options for a few years. For sure, I'll repurpose those 2 original el cheapo Ali Express RGB diode modules, with analogue drivers. Beam quality isn't crucial.
I've already provided 12VDC to power the T4 LS with an external brick, which can be split to power lumia motors and diode drivers inside a lumia projector. A buck convertor inside the lumia projector can provide 5VDC power to solenoid activated mirrors to redirect the beam(s) to the various lumia devices. The T4 LS also provides an I2C bus to control all of their drivers' signals. It also provides -/+ differential aux X/Y galvo outputs; 2 projectors controlled by a single T4 LS.
The previously suggested variable speed turntable/lumia wheel motor would provide you with the ability to test and select your preferred assortment of lumia devices. A second lumia projector frees up your imaging projector to scan dancing imagery on top of the lumia backgrounds, plus allows you to easily redirect beams to different lumia backgrounds.
Then, you'll have yourself a proper laser show system, as Laserist suggested.
Food for thought... a large enough serving to chew on for a while, I reckon.
BR
Roj

[glassLaser]

I will try the pulsating orb effect and pulsating square.
The motor - I have a rotating turntable mirror base and there i am rotating the crystal horizontaly. You can feel the rotation on the wall how the effects are moving to the left or right.

[TheHermit]

I found a big roll of good burn mylar some years ago at work. They said it came from home depot, and to take as much as I wanted, so I took a couple of meters. No idea what it's intended purpose is. Here's a poor quality video of this mylar burning using a Lasershowgen timeline. I should remake this using the original long side pod fader.

Often I find that the uncluttered, unconscious mind is a better problem solver than while cluttered with sensory stimuli. I go to sleep with an unsolved mystery and the mind automagically connects the dots for clarity to become realized during moments of wakening.
This morning, my subconscious had reached a conclusion regarding your burn challenge and informed me that the Home Depot mylar must have a clear plastic coating.
That would explain what is causing the faint random lumia surrounding the reflected beam, which is melting the clear plastic, but not yet powerful enough to melt the mylar to create the burn bubble effect.
Perhaps the plastic coating is only on one side of the mylar, but not the other. So, flipping it to the opposite side may provide a better result.
Perhaps you need to apply more laser power to melt the mylar.
Absolutely need my morning coffee & kahlua.
Wanted to share, before my dreamstate fades away.
😎
pre-coffee EDIT:
Checked out Home Depot's website & searched for 'mylar'. Only double sided insulated sheets, with air in between was returned.
But, HD also sells UV Blocking Mirrored Window Film which looks a lot like mylar, but it's not specified as such. Some are titanium, others aluminum. Some have a thin plastic layer that's peeled away & soapy water provides adhesion to the window (check out the application video). I suspect this is what you have.

Caffeine induced, trivial brain activity:
Back in the day, The Who had their own laser company, Holoco Ltd, which owned a bunch of ion argon gas 20-30W SP 171's for their tours, s well as a 60W SP 192, which was 2 171 tubes, mounted on a huge I-Beam, with the optics at each end.
But, Holoco was most noted for Nick Phillips' amazing work in developing holography, which included using a pulse CO2 laser Don't remember it's actual power, but according to gossip, it was measured in 'gillettes', as in the number of razor blades it would burn through. 🤯