Ortur Laser Master 2 Pro Laser Engraver: Long Focus vs. Short Focus Laser Modules

Ortur laser master 2 pro engraving machine is trending in 2021, because, let’s admit it, it is simple, affordable and reliable. Since you can install different laser modules on it and get different results, let’s explain the differences between long focus laser modules and short focus laser modules.

Before we start, let's list the issues to consider when purchasing laser modules.

Things to consider before buying a laser module

Brand: If there is no special indication, laser modules and laser engraving machines of different brands are not compatible, so please pay attention to the brand name on the label before purchasing the laser module.

Focus length: You will get different results with different laser focal lengths, so you need to determine whether you need a long focus or short focus laser module before placing orders. Of course, you can also buy both to get a freer DIY experience.

What is focus length?

The focus length of laser engraving machines means the distance between the point where the laser beam is focused and the focusing lens. Different focal lengths are achieved through different lenses in different laser modules. Just like naughty children burning ants with a magnifying glass in the sun, in order to minimize the light spot and maximize the energy concentration, the distance between different magnifying glasses and the ground is different.

 

Please note that all the Ortur laser modules have fixed focus length, and we will include the adjust devices in the packages.

The differences between long focus and short focus laser modules.

Because the spot size of the focused laser beam is directly proportional to the focal length of the laser module, short focus laser modules generate smaller points and finer engraving, and long focus laser modules can cut thicker materials.

Short focus laser modules

Long focus laser modules

Pros

Smaller focal spot, finer engraving

Good at engraving harder materials

Can cut thin materials, only slower.

 

Has a longer engraving depth, can cut faster.

Good at cutting thicker materials

 

Cons

Shallower engraving

Bigger focal spot

May need extra air assist to avoid black edges

To help you get the right Ortur laser module, here is a side by side comparison of Ortur Short Focus (SF) laser modules and Long Focus (LF) laser modules.

 

Short Focus Laser Modules

Long Focus Laser Modules

Model

Ortur LU 2-4 SF

Ortur LU 2-4 LF

Picture

 

 

Focal Spot Size

0.12 x 0.15mm

 

0.17 x 0.25mm

 

Suitable Materials

Cut & Engrave

Wood, plywood, corkwood, bread and other food, acrylic, leather, paper

Glass, stone, oxidized metal, stainless steel, ceramic tile

Cut & Engrave

Wood, plywood, corkwood, bread and other food, acrylic, leather, paper

 

Work Example

 

 

Here is the performance comparison of three laser modules when cutting different materials with different thickness. Please note The results would be different in even same material with different finishing or different colors, So you need to adjust the speed and power rate based on different objects. Also, please adjust the focal length to be the best, make the focal spot to be the smallest. Materials couldn't engrave or cut directly: Glossy metal plate, Transparent materials, Reflecting materials, Some materials in white color or pervious to light, etc. Then, you need to use the marker pen to black it to engrave.

 

LU2-4 SF

LU2-4 LF

Note

 

 

 

 

 

Plywood Plate

1.6mm

Engrave
10000mm/min, M4, S1000
15Lines/mm

Engrave
10000mm/min, M4, S1000
15Lines/mm

You can get better results if the material has a darker color

Cut
300mm/min, M3, S1000
Number of passes: 1

Cut
400mm/min, M3, S1000
Number of passes: 1

2.8mm

Engrave
10000mm/min, M4, S1000
15Lines/mm

Engrave
10000mm/min, M4, S1000
15Lines/mm

You can get better results if the material has a darker color

Cut
100mm/min, M3, S1000
Number of passes: 1

Cut
150mm/min, M3, S1000
Number of passes: 1

4mm

Engrave
10000mm/min, M4, S1000
15Lines/mm

Engrave
10000mm/min, M4, S1000
15Lines/mm

You can get better results if the material has a darker color

Cut
100mm/min, M3, S1000
Number of passes: 1

Cut
130mm/min, M3, S1000
Number of passes: 1

Pine Board

6mm

Engrave
10000mm/min, M4, S1000
15Lines/mm

Engrave
10000mm/min, M4, S1000
15Lines/mm

You can get better results if the material has a darker color

Cut
100mm/min, M3, S1000
Number of passes: 1

Cut
150mm/min, M3, S1000
Number of passes: 1

9mm

Engrave
10000mm/min, M4, S1000
15Lines/mm

Engrave
10000mm/min, M4, S1000
15Lines/mm

You can get better results if the material has a darker color

Cut
100mm/min, M3, S1000
Number of passes: 3

Cut
150mm/min, M3, S1000
Number of passes: 3

Paper Board

3mm

Engrave
9000mm/min, M4, S400
15Lines/mm

Engrave
9000mm/min, M4, S400
15Lines/mm

You can get better results if the material has a darker color

Cut
500mm/min, M3, S1000
Number of passes: 1

Cut
500mm/min, M3, S1000
Number of passes: 1

Colored A4 Paper

0.1mm

Engrave
9000mm/min, M4, S350
15Lines/mm

Engrave
9000mm/min, M4, S350
15Lines/mm

If the paper is white, the result will be not good.

Cut
3000mm/min, M3, S1000
Number of passes: 1

Cut
3000mm/min, M3, S1000
Number of passes: 1

Kraft Paper

250g

Engrave
9000mm/min, M4, S500
15Lines/mm

Engrave
9000mm/min, M4, S500
15Lines/mm

You can get better results if the material has a darker color

Cut
1000mm/min, M3, S1000
Number of passes: 1

Cut
1000mm/min, M3, S1000
Number of passes: 1

Leather

0.7mm

Engrave
10000mm/min, M4, S1000
15Lines/mm

Engrave
9000mm/min, M4, S500
15Lines/mm

/

Cut
800mm/min, M3, S1000
Number of passes: 1

Cut
1000mm/min, M3, S1000
Number of passes: 1

Dark Colored Non-woven Fabrics

0.5mm

Cut
1500mm/min, M3, S1000
Number of passes: 1

Cut
1500mm/min, M3, S1000
Number of passes: 1

Can not cut the white papers

Acrylic

5mm

Engrave
10000mm/min, M4, S1000
15Lines/mm

Engrave
10000mm/min, M4, S1000
15Lines/mm

Need to coat a dark colored paper on the transparent Acrylic plate.

Cut
100mm/min, M3, S1000
Number of passes: 3

Cut
100mm/min, M3, S1000
Number of passes: 2

Tin Wire

Will melt

Will melt

Can not engrave

Cobble Stone

Engrave
100mm/min, M4, S1000
15Lines/mm

Engrave
100mm/min, M4, S1000
15Lines/mm

Need to be coated with acrylic dye heat transfer film

Ceramic

Engrave
100mm/min, M4, S1000
15Lines/mm

Engrave
100mm/min, M4, S1000
16Lines/mm

Need to be coated with acrylic dye heat transfer film

Powder Coated Metal / Paint Sprayed Metal

Engrave
10000mm/min, M4, S1000
15Lines/mm

Engrave
10000mm/min, M4, S1000
15Lines/mm

Engrave in the powder coating layer.

Plated Metal

Engrave
100mm/min, M4, S1000
15Lines/mm

Engrave
100mm/min, M4, S1000
15Lines/mm

The surface color will be changed, need to paint the glossy finishing surface black.

Anodised Aluminum

Engrave
100mm/min, M4, S1000
15Lines/mm

Engrave
100mm/min, M4, S1000
15Lines/mm

Stainless Steel

Engrave
100mm/min, M4, S1000
15Lines/mm

Engrave
100mm/min, M4, S1000
15Lines/mm


1 comment


  • Franco latini

    Ho trovato le spiegazioni, interessanti, semplici e molto utili. Grazie.


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