Cutting acrylic with the NEJE 40W Laser cutter/engraver
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- Опубліковано 27 сер 2024
- Doing a few test cuts on 3, 4.5, and 5mm Acrylic with the NEJE 40W Diode Laser cutter/engraver.
Music:
Virginia Highway - Tigerblood Jewel www.epidemicso...
Gold in Our Pockets - Tigerblood Jewel www.epidemicso...
Love For The Ocean (Tigerblood Jewel Remix) - Pastis www.epidemicso...
![Neje A40640 40w laser modul [unbox / review / first test] best laser modul modul i try](/img/n.gif)
Thanks for making the video and doing this in a fairly scientific way. Thanks also for finding the music I will listen to in my lab this week.
Glad you enjoyed it!
i came for the laser but i stayed for the music
I just got this machine and it's pretty decent. I also have an atom stack A5. I love that work horse. 40 watt is nice to have.
Very nice!
Try setting your focus to the *bottom* of the acrylic. Smooth clean cuts at a much lower power and no melting.
Cool thanks will try that
Does anybody know how to adjust for kerf when the laser focus is a rectangle like with the 4063 or 4064?
I would appreciate since this is a big killer of any precise cutting project for me now
Using 3 mm black acrylic I got nice cuts with my 40 watt NEJE. I left the protective "cover" on. Got a decent cut at 50% 200 mm min 2 passes. Also did a cut out of my shorten name "Mike" in New Times Roman at 125 mm min at 40% 3 passes. Your video is much appreciate. Recommend you get a honeycomb bed for cutting. It should improve you cutting of designs with details in them.
Thanks. Funny you should say that. I just uploaded a video testing with a laser bed. Unfortunately couldn’t find a honeycomb bed locally so made something else. I’m still in two minds if I get better quality cuts with a single pass at high power or multiple passes at lower power.
@@makerz4247 consegue cortar LP musical Black ??? Disco de música preto de 30 cm
I had to google translate your message but seems like you are asking if the laser can cut black vinyl records. I have not tried, but also, and more importantly, seems like it will emit toxic fumes when cut with a laser, so please don't try.
@@makerz4247 acrílico Black não emite gás tóxico também?
It does, which is why you need some ventilation but it is not as toxic as Vinyl which produces Chlorine gas. There are a few pages on the internet with guidelines for safe and unsafe materials and most consider Acrylic safe ( with ventilation). for example fablabdevon.org/wp-content/uploads/2014/08/Laser_Safe_Materials1.pdf or cardiffhackspace.co.uk/knowledge-base/laser-cutter-dangerous-materials/.
You could possibly get a laser with a proper filtration system that you can use to cut more toxic type materials but the Chlorine gas is corrosive so might end up damaging your machine.
I am no expert, just cautious so please do your own research before laser cutting .
Thank you so much for make this video. I have NEJE 5w but not good to cut Acrylic I want to buy NEJE 40W to cut Acrylic 3mm I think NEJE 40W is ok for me.
for clean cutting acrylic, blowing air is needed
Thanks, definitely something I want to look into in the future
The real fun part at 3:41
If you can hookup a air assist to it you might find that it requires less power extending your lasers life performance.
Cool, thanks I will need to try it
Do you think this machine is worth getting if I need to cut acrylic and quarter inch woods?
I think you will run into limitations quickly. It only really cuts black acrylic well and soft wood. If you need to only cut 3-5mm black acrylic and balsa wood it should be fine but anything else you will need a CO2 laser.
Think need to try with air pumping . Much faster should be .
I can tell ya what this poor Ant thinks: OH MY GOD I'M BLIND!!!
And maybe you want to use some mesh under your workpiece. You won't find any cutting laser out in the Industry without. ;)
I have realized the error of my ways :)
Clear acrylic - will it cut clear acrylic ???
Thanks for the video. It seems the area aroud the cut gets burned and not bright .I am wrong ?
Yep your right, in this video I cut directly on the board and that caused burn marks, with a cutting bed that lifts the piece off the waste board it works much better
HI
I have the same module and not able to get the same results as far as the speeds go
I checked the 12v Supply and make sure it is 12v
The TTL voltage is only 2v at 100% power can you measure the TTL voltage
On laser it says 3-12v TTL but TTL is normally max 5v
What controller is in the machine
Perhaps you've to clean your lens with some IPA, air assist while cutting will help to prevent the need of cleaning the lens for a longer period. As far as I understand TTL will turn the laser on or off as long as it is in the range of 3-12v, by PWM it controls the power of the laser. If the voltage is too low to operate correctly your wires might be too long. Did you measure while connected? Besides that, the results can vary per brand of the acrylic and extruded/cast.
Ant part was good :)
Thanks :)
Not strong enough for acrylic. 40w is not the power but the electricity use. Power laser is 7.5 w. A 40w laser is much more powerful than this. Now the stronger NEJE laser is 12w and the newest in 2022 the E40 is 11W.
I'm confused about setting the speed.. what is the minimum and maximum speed for the laser diode on lightburn... I use a neje laser module...thanks🙏🙏
It depends on the material and thickness you are trying to cut or engrave, for example these are some of my settings based on the 40W module:
3mm cardboard 900mm/m @ 65% power
4mm cardboard 900mm/m @ 75% power
3mm black acrylic 100mm/m @ 90% power
3mm Plywood 200mm/m @100% power
But usually its a bit of trail and error to see what works best
Thank you very much for making this video. it's very illustrative and it really makes you want to work ... please I have a question. What is the program you use to generate the cut in various speed and power calibrations in a single file ?. thank you very much again.
greetings from Ecuador
Hi, thanks, glad you liked it, I use Lightburn, I use different settings for different layers in Lightburn. I posted the file in Github. github.com/maker-z/LightBurnTestFiles
hi, may I know which NEJE laser cutter at optimum power that can cut acrylic 2mm to 5mm thick panel ? ( the model of minimum watt below 40W )
I do not know the lowest one, but I have seen other videos with the 30W laser cut 2mm-3mm acrylic. But the diode lasers only really work well on black acrylic.
only works on black acriylic?
Thanks for the comparison. How about the smoke? Do you have to pay attention to something here?
Yep, I just used a regular fan and put the laser near an open window to blow the smoke out. You also have to make sure whatever you cut or engrave does not emit toxic gases, wood, acrylic & real leather is usually fine but double check anything else
@@makerz4247 Thanks for the valuable tips.
the air assist could help to cut? do you try 8mm black acrylic?
I have not tried 8mm acrylic, don't have any shops in my neck of the woods that stock it will need to order internationally. Air assist sounds like a good idea, thanks.
the machine can not cat, red, blue, clear, green etc. acrylic
Hi, have you tried cutting white plexiglass?
Hi I did try to cut white acrylic. But it did not work. For clear or light colored acrylic you will need a CO2 laser
@@makerz4247 yellow, green, blue, pink and other colors? Did you try?
Will it cut clear acrylic?
Thanks a Million dude! I guess the only question now is will running 100% kill the diodes? The cooling on this new module is much better than the old modules in my opinion. But I wonder if it's enough
Thanks, yeah I was wondering that as well, the fan on the laser really spins up at 100% I might just tone it down to 80% or 90% and do more passes. Guess I will see over time how long it lasts
@@makerz4247 what you think how long it can last
You still can cut today acrilic or the diode lost 40-50% in 100 hours??
It is still cutting fine, I have not counted the hours I used it though
@@makerz4247 I'm waiting for the same module, so I'm very happy, maybe with a couple of LD the loss of power isn't so heavy. Thanks a lot Bro
wonder if it would work better if the surface wasnt glossy?
good point I will need to try that, thanks
Hey Maker Z, amazing video! do you know if its possible to cut glass?
Thanks, for glass ( and clear acrylic ) you would need a C02 laser that is in the infrared spectrum, so unfortunately this one wont do it
will this cut clear/transparent acrylic? if not, is there any alternatives?
Diode lasers cannot cut clear/transparent acrylic, you will need a CO2 laser for that as the wavelength is quite different, diode lasers are between 810 to 1064 nm and CO2 in the infrared range 10,600 nm.
@@makerz4247 thanks for the info! are you familiar with co2 laser? is there any co2 laser that you recommend for beginner?
No sorry I don't have one so cant really recommend any, but there are some "affordable" K40 type ones on Aliexpress but you will probably get what you pay for.
I am able to cut transluscent acrylic, the red/orange color has worked so far, 3 passes at 200 mm/min speed, 100% intensity, then 1 finishing pass at 100mm/min speed also 100%, but the finish comes out a bit rough, & still trying to tune it a bit, but it does cut. I cut with the backing paper still on. You do have to sand and burnish the edges after you are done, but it does cut through it. Stinky.
Please can you tell me the width measurement of the hole compared to the width measurement of the cut piece? I am interested to know the cutting width.
Good question, on the 3mm black acrylic the inside measurement of the hole is 10.1mm and the cut out piece is 9.7mm, so 0.4mm difference for both sides, so the cut width for a single cut is 0.2 mm. Like all good answers I would say it depends... for example on the material you cut and the laser settings etc, but this example is one of the better/finer cuts
Note that the beam is oval shaped (it is wider in one direction than the orthogonal direction). This is the reason that it cut through in one direction but not the other in the 3mm sheet. If your software allows it, you could cut faster along one axis than the other.
Excellent, I'm just about to start cutting with mine, so you've taken out the trial and error for me :) Do you think it will cut different colours of the same thickness?
I think colours that absorb blue light will work but colours that reflect blue does not work for example blue or purple acrylic or white acrylic.
@@makerz4247 Would clear work if it's not reflected then? Or would the wavelength be wrong to actually cut it
I tried clear, and it does not cut it in this video, ua-cam.com/video/gxHC_UNGgWc/v-deo.html around the 8:15 min mark. I think you need a CO2 laser to cut clear acrylic
@@makerz4247 cometi ese error justo compre un acrilico blanco y un clear y no me corto
What is the distance from the bottom of the laser to the material ?
The laser is 20mm from the waste board, so for 3mm acrylic its 17mm from the top of the acrylic, and 15mm for 5mm acrylic.
Is there a reason clear acrylic is not included in testing?
I did try in this video at around 8:20 ua-cam.com/video/gxHC_UNGgWc/v-deo.html This laser is the wrong wavelength for clear acrylic you would need a CO2 laser for that.
@@makerz4247 Thanks for the update.
Helo! Can this machine engrave and cut in golden acrylic?
I have not tried but think it might struggle with metallic/reflective materials
Nice , good but dsnt avlbel in India......it's so costly 4lakh in one machine in india...
Thanks
Can for cutting plate or metal
You should be able to engrave dark colored aluminum but it wont cut any metal
Thanks for making this video! I was thinking to upgrade my laser module to 40w mainly for cutting 3-5mm plywood, was wondering can it cut thru 3mm plywood in single pass?
Hi, I was able to cut 3mm plywood at 200mm/s @100% power, there is a bit of burning though so might be worth trying more passes or covering with masking tape etc. Or air assist might help as well.
@@makerz4247 Glad to know that! Thanks for the info👍👍
I have good luck on 3mm ply at 300mm 75% power 2 passes. Air assist. Nice clean cuts.
Where do I get those test files?
I uploaded the LightBurn test file to github.com/maker-z/LightBurnTestFiles, you will need to change the speed and power for each layer if you need to change it.
@@makerz4247 Thank you that effort!
What machine is this?
Its the NEJE Master 2 plus with the 40w laser module
Corta el acrilico transparente
This laser cannot cut clear acrylic as it is the wrong wavelength, you need a CO2 laser in the infrared spectrum to cut clear acrylic.
Sorry, I don't understand English speaking. What are your conclusions? With an air assistant would it be better?
Hi, the burning issues on the underside I resolved with a raised cutting bed. It really helped with the quality of the cut. I have not tested cutting acrylic with air assist
for the cost of the laser, not worth it, better co2 laser.
anything with this much cutting area 4 or 5 times as much
@@ironmonkey1512 But a co2 laser machine is way more expensive!