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Ortur Aufero Laser 1

The Video about the Aufero Laser 1


You can buy the LaserMaster 2 Pro in the online shop of Ortur. That's where you can also get a metal enclosure box.
Activity 1: Flash Sale Price during 2 pm to 3 pm Nov. 25-Nov. 30 UTC (ONLY 5 units per day):
Aufero LU2-2, Aufero LU2-4, Laser Master 2 Pro
Activity 2: 10% discount for all products during Nov. 25-Nov. 30:
Coupon code: ORTURBF (with 10% off for all products at ortur.net)
On AliExpress:
Aufero LU2-2
Coupon code: AUFEROAL1 (Get US $2.00 off on orders over US $100.00)

Mechanics

Ortur Aufero Laser 1, Package
Figure 1:
The Aufero Laser 1 ships assembled. Only the laser module has to be mounted and wired up.

Ortur Aufero Laser 1, Mechanics
Figure 2:
The mechanics is composed of 20x20mm extruded aluminum for the X-axis and 20x40mm extruded aluminum for the Y-axis. The two axes are each driven by a stepper motor via timing belts, and they are guided by plastic rollers with ball bearings along the extruded aluminum. The backlash of the mechanics can be minimized via eccentric nuts, so that the laser runs smoothly along the axes. Both axes have limit switches to which the laser head is moved whenever the Aufero gets powered on.

Ortur Aufero Laser 1, Work area
Figure 3:
The maximum work area is 18x18cm.

Elektronik

Ortur Aufero Laser 1, Mainboard
Figure 4:
The machine is controlled by a mainboard with an ESP32 microcontroller. Grbl runs on this CPU, so that the machine can be operated with open source software - that's how it should be - devices with closed source firmware will no longer enter my workshop.

Ortur Aufero Laser 1, Laser module LU2-2
Figure 5:
Ortur offers three different laser modules and my package included all 3 types:
The cheapest module, named LU2-2 has a laser diode with a focal length of 50mm and an input power of about 8 watts delivering a laser output power of 1.6W.

Ortur Aufero Laser 1, Laser module LU2-4LF
Figure 6:
The two more powerful modules have diodes with an electrical input power of around 16 watts at a laser outout power of 5.5 watts. The focal length of the two modules is different:
Type LU2-4-LF for "Long Focus" has a focal length of 50mm like the first module,...

Ortur Aufero Laser 1, Laser module LU2-4-SF
Figure 7:
... while with the type LU2-4-SF for "Short Focus" it is only 30mm.

Ortur Aufero Laser 1, Laser module LU2-4-LF with nozle removed
Figure 8:
The module with the long focus is better suitable for cutting, ...

Ortur Aufero Laser 1, with Air Assist nozzle
Figure 9:
...especially because of the included nozzle for "Air Assist" functionality. If you have a compressor or an air pump for fish tanks, for example, you can mount the metal nozzle to the LF module that is included in the package, in order to blow more air onto the cutting edge. This significantly increases the "Air Assist" effect - a stronger air flow is better directed onto the cutting edge. Air Assist leads to even finer cuts through the material.

Ortur Aufero Laser 1, Laser module LU2-4-SF with nozzle removed
Figure 10:
The module with short focus is better suited for engraving work. Have a look at teh examples section to see the differences.

Examples

Ortur Aufero Laser 1, Example graphic Locomotiva on plywood with LU2
Figure 11:
Graphic "Locomotiva":
Bitmap Graphic: 1250x860 Pixel
Grid size: 0.08mm
Laser module: LU2-2


Ortur Aufero Laser 1, Example graphic Locomotiva on plywood with LU2-4-LF
Figure 12:
Graphic "Locomotiva":
Bitmap Graphic: 1250x860 Pixel
Grid size: 0.08mm
Laser module: LU2-4-LF
Due to the finer laser beam of the LU2-4-LF module in comparison to the LU2-2 module, you can clearly see the lines, the bitmap graphic is composed of. With this module, the resolution should be increased in order to achieve a more detailed engraving.

Ortur Aufero Laser 1, Example graphic Locomotiva on plywood with LU2-4-SF
Figure 13:
Graphic "Locomotiva":
Bitmap Graphic: 1875x1223 Pixel
Grid size: 0.054mm
Laser module: LU2-4-SF
Since the laser beam of the LU2-4-SF module is focused on an even smaller area, I have now loaded a higher-resolution graphic and reduced the grid size to only 0.054mm. With the same total dimensions, the graphic is now burned onto the wood with 450DPI. The job takes significantly longer, but the result is also signifficantly more detailed.

Ortur Aufero Laser 1, engraving steel
Figure 14:
Lettering "HomoFaciens.de":
SVG Graphic
Laser: 100%
Speed: 100mm per minute
Laser module: LU2-4-LF(top)
Laser module: LU2-4-SF(bottom)
According to Ortur, the more powerful modules are also suitable for engraving stainless steel. To do this, however, the surface should be covered with a marker. All colors that can absorb the laser light are suitable - you are on the safe side with black, but red also works fine. I don't use stainless steel, but a piece of normal steel that I usually weld into rusty areas of my cars. Due to its better thermal conductivity, this material is in general less suitable for engraving.
The laser module with the long focal length transferred significantly less energy to the metal surface, so the lettering is hard to recognize. The module with the short focal length, on the other hand, has engraved a clearly visible lettering - the smaller area of laser the beam at the focal point is a noticeable benefit for engraving. But here, too, it should be noted that the engraving is not very deep and can easily be rubbed off with steel wool, for example. The lettering should be fixed with clear varnish if the workpiece is exposed to mechanical stress.

Ortur Aufero Laser 1, example lettering cut LAser
Figure 15:
Lettering "Laser":
SVG Graphic
Material: 4mm Poplar plywood
Laser: 80%
Speed: 300mm per minute, 2 passes
Laser module: LU2-4-LF


Ortur Aufero Laser 1, Example lettering cut Let's Burn
Figure 16:
Lettering "Let's Burn":
SVG Graphic
Material: 4mm Poplar plywood
Laser: 80%
Speed: 300mm per minute, 2 passes
Laser module: LU2-4-LF


Software

The software used in the video are Python scripts and I use the Ortur Aufero Laser 1 Pro to teach programming of CNC machines in course of my series on "Physical Computing". This is why I am working on an extra chapter on the software of the laser engraver.


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