Laser Tips and Tricks

1Which Laser Forum should I join to learn more about Laser Engraving Machine?

Join Fiber Laser Metal Engraving -

2What is Frequency setting for Fiber Laser Engraving Machine?

Think of it like sandpaper.....lower frequency=lower grit, higher frequency=higher grit. The lower the frequency, the more aggressive the material removal will be. So to get depth quick, use your minimum frequency, for a light etch, use a higher frequency.

It's more complex than that, but that's the simple explanation.

3What is the frequency setting to get Strongest shooting for different watt fiber laser engraver machine?

If you use Raycus 30w...start freq at 30..if Raycus 50w..start freq at 50khz..

If 50w jpt.. start at 40khz..if 60w start at 45khz@200ns..if 80w..start at 60khz at 200ns.. if 100w start at 75khz@200ns.. if 120w start at 90khz@200ns.. if 200w start at 240khz@200ns

4How to run Ezcad on MAC?

You can run Windows on a Mac using Parallels or BootCamp or VirtualBox.

5Windows 11 Pro Issue & Ezcad2 Driver Installation

If you have issues to install Ezcad2 driver on a new computer with win11, you need to uninstall/remove the "windows preferred driver" (USBLMCV2) with the laser on and connected. Find "Universal Serial Bus devices >> USBLMCV2 >> Uninstall device", select "Delete the driver software for this device" and click "uninstall" button. Then scan new devices in device manager. If needed, power off the laser and power it back on.

6How to switch between Ezcad2 and Lightburn?

You need to uninstall one software driver first, then power off and power on the laser, scan new device in device manager, then install the other software driver.

7Where to buy Laser Safety Glass? 1064nm for fiber

8What is the difference between a JPT and a JPT MOPA?

JPT only makes MOPA Engraving Lasers. The 20, 30 & 50 Watt LP-E has a Fixed Pulse Width of 200ns, the 30 Watt M7 is 2-350ns and the 60 Watt M7 and above are 1-500ns.

9What is the difference between JPT 50W LP and JPT 60W MOPA M7?
  1. Q pulse: 50 Watt LP-E has a Fixed Pulse Width of 200ns, the 60 Watt M7 is 1-500ns.
  2. Frequency: 50 Watt LP-E is 1-600khz, the 60 Watt M7 is 1-4000khz.
10Basic Metal Laser Cutting Settings

Cutting aluminum blanks.. 1.5mm and 3mm thickness.. if you have 50w jpt run at 40khz...raycus 50khz..60w jpt 30khz@500ns..80w jpt 40khz@500ns..100w 60khz@500ns..120w 80khz@500ns...power range 75-95%..(depending on your modules).. speed range 750-2000...lens 70-110mm..offsetting at 0.1-0.3..hatch 0.03-0.05..mode continuous until parting.

11Tips to Laser Engrave Solid Black on Brass

Run a bunch of depth passes, then run a cleaning pass and then black setting.

Once it's engraved, put a little oil in the engraving and it will pop the black really nicely.

12Can Fiber Laser engrave Wood?

No and yes. Fiber laser is mainly designed for metals. Galvo co2 laser is the right tool for wood marking. But you could try wood with fiber laser, sometime it works. 

13How to engrave Glass with fiber laser engraving machines?

Paint it, or put aluminum foil on it, then engrave with fiber laser.

14Can I upgrade a 30W fiber laser machine to 50W?

Yes. Just buy a 50w fiber source, plug and play, nothing else.

15How to choose Lenses buying A Fiber Laser Engraver?

A. 150*150mm is suitable for most applications. 
B. 70*70mm lens is helpful for deep engraving and thin metal cutting. Smaller lens is with lower focus distance which also means stronger power shooting.
C. 300*300mm lens is useful for tumblers engraving without rotary, it has deeper focus tolenrance which allows you to do around max 40-60mm width on curved surface. Also useful for big size design when needed. Bigger lens is higher focus distance which also mean weaker power shooting, also good for plastics.

Optional lenses: 100*100mm/175*175mm/220*220mm/250*250mm/400*400mm.
For similiar size lenses, for example 70*70mm and 100*100mm lens, just choose one of them, no need to buy both.

16Is there any way to prevent Reflection while laser engraving and cutting?

Mask the surface with black mark sharpie or just a black marker.

For cutting reflection, put tape or paint over it first.

17Cutting comparison base on 120W and 80W Fiber Engraving Laser Machines

Cutting comparison base on 120w and 80w JPT YDFLP-M-R AkA CM7 model (Laser Source by Richard Zhang of Omg laser) .. all components and parameters are identical.. difference only on lenses.. 120w on 70mm..80w on 112mm both on Opex..

  1. 1st pass.. speed 2500 with wobble activated (ellipse) dia. 0.15..dist 0.1
  2. 2nd pass.. speed 2000 without wobble activated.
  3. Power 1st pass (cross hatch 45deg) @75%..2nd pass @40% (cross hatch -45deg)..hatch type.. unidirectional
  4. offsets at 0.5mm hatches @0.03.. 45 deg angle.. auto rotates @13 deg.
  5. pulsed width and frequencies on 120w 1st pass 80khz@500ns..2nd pass 90khz@200ns...on 80w 1st pass 40khz@500ns..2nd pass 60khz@200ns

(Material base on 1.5mm aluminum and brass)

120watts (70mm lens) tooks 3.5 cycles and 80watts(112mm lens) tooks 6.5 cycles (1 cycle 4 passes) with clean cutoff.

above base on aluminum and for brass just add another cycle for both module.

18How to transfer Adobe illustrator file to Ezcad?

Save as ai8, then import to Ezcad.

19How to transfer Coreldraw file to Ezcad?

Save as plt format, then import to Ezcad.

20What to do about the burnt edges on engravings?

For singed, sorched, burnt edges, after a quick spray of clp and a pass with nylon brush, still have sanding and polishing to do, but the burn marks are gone instantly.
clp: generic gun cleaner "clean lube protect"

21Tips and Tricks for Laser Stippling on Sigs

Use the settings for 1 pass, wait 1 minute, then do another pass, do that about 6 times for most sigs, I do 4-5 on the thinner areas if you can, 320s I think you can do 8 passes. So 1 minute between each pass, it will look bad when you are done,don't worry it's ok. Toss it in the sand blaster and blast it lightly 5-10 psi keep moving, doesn't take much. Pull it out and blow it off, then add a dab of oil to rejuvenate the cerakote.  
Some times it also leaves a black residue on top, not sure if an air assist would help, I'll leave that to the experts to figure out. 

30w OMG Laser , with a 200mm lens. The real truck is the waiting time and the sand blaster. 
700 speed, 40khz, 60 power, 0.08 line distance

22Which is better for Glass engraving, UV or CO2 laser?

UV laser works the best. For Co2, use the smallest lens you have. Use a low power as the glass fractures. Use a brass brush on a drill to remove the chards.

23How to clean Gun Slide after deep laser engraving?

Plastic brush + isopropyl alcohol leaves it super clean.

If you have gun cleaner or scrubber it works great. 


24How do you treat the steel afterward to prevent rusting after laser engraving firearms?

You have to finish the firearm with a corrosion protection finish. That could be just oil, annealing to bluing to cerakote. It’s all part of the gunsmithing process.

Whatever finish the customer chooses. Cerakote is popular. Small engravings, most just agree to keep it oiled.

25Ezcad2 Error saying IPG Laser: Not Ready

It ended up being a driver issue. Reinstall the driver.

26Glavo CO2 Laser Engraver vs Gantry CO2 Laser Cutter | Laser engrave Tumblers

For anyone on the fence about getting a co2 galvo you won’t regret it for doing tumblers.

Same settings for every brand and color of powder coat. Not like the fiber where sometimes you have to diddle the settings from cup to cup even if they are the same color!

1 minute start to finish and 90% of the time you don’t have any washing or clean up after!

For reference the same job on my 100w gantry is 7 minutes + clipping into the rotary and washing after with cleaner and magic eraser

60w omg co2 galvo
300mm lens
55% power
2x 45degree passes

Colton Backman

27Brass Laser Engraving Process for your reference

Laser engraving-->Tumbling with 2mm stainless steel balls-->polishing with guitar fret rubber--> Cleaning with isopropanol-->Spray coating with zapon coating for verdigris prevention.

28Why you can't use a fiber laser engraving machine to engrave wood?

Basically it comes down to wavelength and hertz of the laser and power. So some fiber lasers can work with wood but the average fiber laser you can’t modify the outputs enough. So co2 and diode work well with wood but not metal while fiber does well on metal and other similar material.

29What does extra frequency range mean in the materials your laser engraving onto?

It allows finer heat control for different materials and affects.
When Deep Engraving Metals with a 50 Watt JPT the Frequency is 40KHZ where the output is highest. Clean Up is at 80KHZ. 50 Watt Raycus would be 50KHZ and 80KHZ.

30 Fiber has stopped engraving on a longer project?

Fiber has stopped engraving on a longer project. The mirrors still move and red laser keeps going. No errors in lightburn. But it works again after cools.

It is more like overheating, try to put a fan close to the laser box, to keep it cool, especially when you do non-stop engraving for hours.

31Laser is more powerful on the left side and barely scratching the surface on the right side?

Check the alignment of the Galvohead to the table.

32Different Fiber Laser Engraver, LightBurn Set Up

If LightBurn is already set up and using a fiber laser, and you plug in a new, different fiber laser, LightBurn can't tell them apart, so it won't "detect" the new one, because it's already connected to it, thinking it's the old one.

Click 'Create Manually', not 'Find my laser', and choose JCZFiber as the device type and proceed from there.

When using the laser, run LightBurn first, choose the correct device from the drop-down list to the far right of the 'Devices' button, then power on the machine.

33How to draw the contours of a picture in LightBurn?

Right click image > trace image

34How to make STL files? | Laser Engraving

Make them using STLs from sites like cults3d and thingiverse.

35How to make TEXT into a Depth Map? | Laser Engraving

Try zbrush software.

36What sofware do you use to make the Heightmaps?


37What is the difference between hightmap and depthmap?

Height map is usually referred to a relief terrain for GIS, depthmap is more to do with what you want on coins, but essentially they are exactly the same thing, the only real difference is that the 'heightmap' term may be one used in a geographical information system and that it may have real 'height above sea level' information.

Highmap and depthmap is literally the same. The depth is converted into a grayscale from white to Black. Call it high or depth map.

38Is there any free software that can be used to create the 3D grayscale images?


39Are you using Air Assist to help keep the area clean when deep laser engraving?

when you all are doing deep engraving on slides or frames and coins are you using air assist to help keep the area clean?

Faster cleaner better finishes. 
I do cutting with my 120 watt setup and its a must. Otherwise you are just welding swarf back to the material.
Below 30 watts it's probably not necessary and below 60 watts you might now notice that much difference.  Above 100 watts yes. 
There's a reason why industrial machines use it.

40How to remove the grey and bring up the brass colour after coins engraving?

Brass requires buffing after being lasered. Use a dremel and buffing wheels. It removes the grey and brings up the brass colour. Same with silver coins. Others do use wire wool too to buff them after lasering

41Where can I get a USB Cable for Fiber Laser Engraving Machine?

42What do you use for the black on Silver laser engraving?

Rustoleum flat black paint.

43How to Switch Ezcad2 to Lightburn?

LightBurn requires a different driver than EZCad uses. The install is all outlined in the docs, as well as how to swap back to the EZCad driver if you need to run EZCad again.

44Offset / Wobbles in Lightburn

when you cut... having a wider kerf/more material removal can help the process. turning on wobble when cutting vectors accomplishes this.

while using line mode in layers you can manipulate the Galvo to oscillate back and forth along the path. Setting the offset and step over gives a bit wider cut which leaves a smoother finish then using a combined outline as in infill. 

30watt fiber start with 90% power, speed 150, freq 30. Wobble .05 step and a positive offset of .05

Do some sanding if you get tacky edges


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