Laser Engraving Myths and Truth
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- čas přidán 6. 09. 2024
- We deal some myths and truths about diode laser engraver such as: what power do the diodes have? Can I trust chinese laser module? Benefit of air assist? Can I cut or engrave metals with laser diode?
AIR ASSIST ###
Hailea 318 air pump: s.click.aliexp...
LASER MODULES ###
Ortur 7/15/20W laser module: s.click.aliexp...
Neje 30/40W laser module: s.click.aliexp...
LASER ENGRAVER ###
Ortur engraver: s.click.aliexp...
Atomstack engraver: s.click.aliexp...
Music by DeDu Production: / @dedu7092
Support LaserGRBL: paypal.me/pool... - Věda a technologie
I measured the optical output of the Neje 40W laser diode with ThorLABS PM400 Optical Power Meter. Optical Output is : 8.576 W.
Hi @Alkim Aydin and thanks for your feedback.
Neje contacted me but never send a sample till now, so I can never test it, but I tested out some other modules with "double diode" technology from two competitors. They both claim 10W optical power but my measure (with a cheap LPM) is really near your result 8.1W-8.5W. That's strange, considering that single-diode modules usually rate 5.5W of optical power, so double diode should be 11W.
I guess that when you have to blend two laser diode rays inside the module, using mirrors and optics, some kind of dispersion is unavoidable, but 20-25% sound too much. Are you able to measure input power of this module? When measuring Comgo Z1 i have 36W of electrical power (instead of 40W which I expect).
Have a nice day
Hi thanks for the software. Just jumped in from 3d printing to laser engraving/cutting.
I am glad you guys understood what he said because his accent makes it difficult
I apologize for my english and bad accent, it's hard to do english content when you are not native speaker. I hope you appreciate the effort
Molto interessante, per me che sono alle prime armi con i diodi laser, è stato ricco di spunti. Grazie per aver condiviso la tua esperienza!
i havent tested it but the neje 40w laser use 2 7.5w diode
I have read about it, but even I could not test it.
Thank you for your video! You' ve answer precisely ....now, i know more about my laser!!!
Great job!!!
Respect from France
I wanted to test air-assist without investing much and used a cheap "Ideenwelt" air-mattress pump (7 Euro in Rossmann) and some 5mm (I think...) transparent green hose from Toom (around 3 Euro for 2 meters).
Good God, how noisy this thing is... But even this cheapskate setup did the trick and I could see the difference by turning the pump on and off mid-print - as soon as it was off, charring started.
Ti ringrazio sei stato molto esaustivo e precison nelle domande e risposte ora con il mio ATOM... posso fare di più
I love diode laser because they are more accurate than co2 tube laser with mirrors but a good adjusted laser will work fine, a diode laser is fixed on the arm and always has the same distance to what you are burning,
I chose a Neje 40watt laser with a good lens, it should have 15watt output in focus,I have not tried full power only 50% power because I can not see the temperature in lightburn.
Of course a 40watt co2 is probably better and faster but I do not have a room for such a machine, it could be fun to see a 40w diode laser vs a co2 laser with the same wavelength.
The temperature is very important to measure so if you have a diode laser of 15w and run at 100% it will be hot but if you have a diode laser of 40w and run it at 70% it will also be hot but can last longer, but of course no one knows when a diode burns out.
Grazie !
about the Pizza... is 100% right ! :-)
Have a nice day, buona giornata.
bonjour
j'ai acheté le two trees totem"40w"s et ça coupe vraiment mieux que la ortur 20w. il me semble que le faisceau est vraiment mieux focalisé. pour la gravure il me semble bien aussi.
A pizza as a unit of comparison. I'm sold. Sign me up.
this video is pure gold! i learned a lot and i thank you!
Very useful video, thank you very much. Most of all, without the time-absorbing irrelevancies often found in such videos. Great Job!
Nice video. You did not talk about the lens, this can make a difference in power density and power loss. I would also mention not all Chinese vendors use false claims to sell their products, the EleksMaker modules for example are rated at optical output and have a very good reliablity.
Hi T2Laser and thanks for your contribution. The video was getting very long, and there was no more space to talk about lenses difference or other interesting things like how to focus in the best way, how to experimentally find the greatest speed and acceleration for your machine, how the color of the material affects the marking process etc. These are good ideas for the next videos!
I preferred to do the tests with the machines I own (ortur and atomstack) and which can be purchased by beginners, so that many people can compare with their results.
I also have a self-built module with NUBM44 7W diode and G2 / G8 lenses, which is on another level (>500 W/mm^2). I also have SHARP brand diodes 5.5W which are very interesting.
I am also expecting to receive a Laser Power Meter. Maybe I'll do some tests and post videos for more experienced users.
Unfortunately I am not familiar with EleksMaker's products even though I have often heard them mentioned. From the photos I've seen they look really well done, I'm sorry I didn't mention them in the video.
Best regards, and have luck
nao consigo desbroquear o alarme,alquem poderia me ajudar
Thank you for the good information!
Model ： NEJE Module 40W
This laser module uses 2 laser diodes.
Technical parameters ：
Module input ： 30-40W
Optical power output ： 15W
Wavelength ： 445-450nm
See video from NEJE:
czcams.com/video/D9dSq8KhL0U/video.html&feature=emb_logo
Do they use prism? How exactly do they combine rays?
Хорошо что с картинками и текстом! Всё хорошо понятно, лайк!
They put two laser diodes in one head, and link them with mirrors so that they build one laser beam.
Maybe that is how they achieve stronger lasers then 30w.
Here is a video name where the guy disassembled the 40w laser head and you can see the two diodes and mirrors
'Neje A40640 40w laser modul [unbox / review / first test] best laser modul modul i try' from TinC33 (i did not put a link to avoid maybe being blocked as spam)
I got Neje 40W it consists of 2 diods and pretty powerful.
Are you able to make a cut test over 5mm (thickness) plywood?
@@lasergrbl I have 3/4/8mm plywood. I was able to cut 8mm plywood in 3 passes without additional air pump with 200mm/m speed. (3mm in 1 pass exactly as mensioned in laser description). Both cuts were performed at 95% laser power.
@@amelien_by after this time, your laser is still working? I read neje diodes have a very short life
Thanks for this video, you already have helped me a great deal with the LaserGRBL software but your explanation for the air assist sure is going to give me a wider selection of woods that I can cut.
I'm going to try a car tire air pump and I hope the 35L of air it push through is enough.
You really don't need to go over the top with air assist. I use a 40mm high output 12V fan with a 3d printed nozzle to direct air down from the side of the laser unit. That allows me to cut 6mm plywood with a so-called 15W laser. Its more just a matter of blowing the smoke away and cooling the cut so it doesn't carbonise too much - the laser will not cut though otherwise.
@@frankhovis I found out myself that overdoing it have the opposite effect and help embers to form on the wood.
I got an electric air pump for beach balls etc that probably push way too much air.
At least is not wasted money, I will get it to pull air out of the box that I plan to install the laser :P
As for the air assist I plan to just add 3 standard PC 90mm fans that I have accumulated over the years and have them push air from the front side. I just need to figure out how to power them since they are 12V.
Thank you very very very much arkipita. This video like as a treasure for me. The information in this video is very valuable. Respect and greetings from Turkey...
Excellent Video and thanks for providing this free software... Some day once I start making money from this stuff, I shall volunteer to share some profits to support free and opensource software.
Спасибо. Ечень толково и познавательно!
amigos boa noite minha gravadora leiser modelo tts 55 deu problema de fairawre o movimento x que faz o movimento horizontal , eu dou o comando escuto ate o bip sonoro mas o eixo x não se move ,o restante esta tudo normal , alguem sabe o que eu devo fazer
Great video 👍 Thanks for the breakdown, it was exactly what I needed.
Thanks a Lot! Very clear and informative video, please keep going your valuable channel!
Thanks for the video! I have a question, if you can help me:
I have the Atomstack A5 and I was wondering if it is necessary to install an "Air Assist" as you show in the video, or if the ¿air cone? system (You mentioned in another video) it has is enough. Also, if I install an "Air Assist", should I remove the green protection plates? (To put the straw focusing on the laser)
I want to know that too :s
An air-assist system is extremely useful, and the benefits are many.
It removes combustion residues from the groove left by the laser, which absorb its power,
thus allowing cut deeper (and faster).
Blow away the combustion fumes, preventing them from dirtying the lens and avoiding the degradation of performance due to dirt.
Keeps material out of the laser groove, cooled. This ensures that the edges of the engraving/cut are nice and clean and have no burnt smudges.
The atomstack cone cannot be considered equivalent to a real air-assist system because it does not perform these functions. A narrower and more powerful jet of air is needed which can only be achieved with a compressor, not with a fan, and with a narrow nozzle.
About the protection shield: if you are smart enough you can drill a hole inside of it and insert the air-assist through the hole
@@lasergrbl Thank you!!
Thank You for such good information that clears up a lot of things. Happy New Year ! 2023
Hello , thanks for the video , !!!I have a question for you. I bought a laser machine .. inclusions of Artur Laser Master 2 PRO S2 .. I connected everything as in the instructions, downloaded the drover program.. But when turned on without a USB cable to the laser , it does not turn on ... And when I turn on the UZB cable in the machine, the light bulbs start blinking periodically ( red blue ) the head does not go.. What could it be???
I'm another newbie to laser engraving. A friend gave me his broken 3 axis cnc router setup that i converted for a 445nm laser. The controller is a laserpecker board using an Atmel nano processor. My question is how do a flash update of the firmware to version 1.1 or higher so I can take advantage of the variable laser power to improve images ? Merci beaucoup pour un excellant video.
Nice work keep it up with your good work, it gives me a clear mind overal!
Need that in this crazy corona madness.
Thanks for all your work and sharing
would a 15-20 watt diode laser be harmfull to the control board? would I notice change from 5 watt diode module to a 15 watt diode?
I created the file in fusion 360 export into dxf file.....my grbl v5.4.0 couldn't see it....I placed the dxf file in illustrator cc and export it as PNG file....when I open it with grbl and selected vectorize for better cut.....the vector lines are double....pls Can someone offer help...thanks
Excellent and very informative. very straight forward and enlightening. thanks so much for this! I'm a little new to the laser thing and this really seems like I just took a power-up pill !!!!
Bravissimo e chiarissimo... grazie😀
nice Video and good Basics for beginners...i like your Software and spend with gratitude.
thanks 4 your work
Hola tengo una Tottem de 40w y me cuesta cortar plywood de 4mm que parametros puedo utilizar tanto en GRBL y el que mas ocupo es Ligthburn
Hello. What about different types of lenses, such as three-piece, G2, G7, G8, does it affect the quality of engraving and cutting?
Mainly the different focal distance and their transparency (i.e. how much energy loss in going through the glass). About the focal distance I posted a video: czcams.com/video/pJbQuDcLIxo/video.html
@@lasergrbl Thank you
now i have neje30w , I try it and tell you what I think.
if you have any advice please tell me
v ery useful,thank you. grazie mille
Thank you I was going to by 40w 3040 model for more power but you made me change my decision
Actually I want to engrave on chest name plate's and after that I want to be cut as per size . Which machine better for me
So important and easy for understanding information! Thank you very much!
Already donated, you are amazing thanks so much for existing♡♡♡
thank you!
Супер, спасибо за ваше видео и такую прекрасную работу. Привет из России!
Will this also cut and if so what material and what thickness ??
EXCELLENT VIDEO ! God bless you. Impressive laser power.
so in the end would you go with the ortur 15 or 20w? couldnt you just get the 20w and run it at a lower speed?
Thank you very much, great Information!
As soon as you said "A MORE POWERFUL LASER!!!" a image of StyroPyro popped into my head, and you obviously had the same idea! 😁
Earned yourself a sub ;)
You are welcome my friend!
Great video. How many l per m have to have the air pump to be enough olus something?
@6:00 it would appear the ortur has a better focus than the atomstack
I confirm. Ortur 7W and 15W are the best for focus size.
Bonjour et merci pour cette video, pour l'air assit es ce que la Hailea 208 air pump peut suffir ?
Hi, great video! Where did you get the file used on the "cardboard" at 6:29? Please post link. And what is the size?
I googled about asterix and used google image search. I don't have this file anymore.
Extremely helpful and well done as are all of your videos. Thank you!
I would like to engrave on wooden teaspoons, made of bamboo, the names are 90mm x 10mm and its taking about 25min per spoon, I am lasering the names "Louis & Bianca" in the font Edwardian Script ITC
I have 60 spoons to do, what a nightmare. Some suggestion or help would be great.
you can try to speed up it by setting higher limits for speed and acceleration in grbl configuration
Very informative - thanks for posting!
Thanks for being such a great resource.
Grazie! chiaro e decisamente semplice... tra le altre cose sei stato decisivo per la scelta del prox laser! ;)
Che tu voglia utilizzare LaserGRBL o meno, benvenuto!
@@lasergrbl cele...celo...:)
buona sera ho provato a vedere sul sito store aliexpress ma non trovo il diodo come quello che ai messo tu nel video sai per caso qualche sito dove si possono trovare grazie mille
thank you so much. it was a very helpfull video
Спасибо.
For cutting 10 mm Acrylic what power i need
can I install lazergrlb on a Mac please tell me how
who is russian guy which sale laser module? Good works. Thanks. I wanted a very much power laser module. i will buy 1.5 w for thin works.
endurance laser
Hi, thanks for your contributions with the software and for your videos. I am using your LaserGRBL with my Atomstack A5 and would like to have a benchmark of my laser power, I’m fairly new to laser cutting and don’t know what to expect from it. Can you confirm that your Atomstack cuts 6 mm solid wood in 15 passes at S400 F1000 as claimed in the manual. I have a 3mm thick Beechwood piece as reference and I need about 40 passes to reach through at S400 F1000. I just want to know if my laser isn’t performing up to specifications or if this is the expected results with this power. My Geometry G-code for cutting an 8mm circle is essentially
G91
G2 X0 I4
I have set up the distance for fixed focus according to the manual. Am I correct when assuming that my laser isn’t performing according to specifications or is this the expected performance?
However if I make a “solid filled circle” and burn with 0.12 mm line separation using my own design of air assist, similar to yours, it manages to burn a hole in the 3 mm beechwood after 6-7 passes with S400 F1000. I am mostly interested in the cutting performance for 6 mm Balticbirch plywood and the performance you demonstrated in your video is what I expected and would like to have, but I don’t know if I can expect that from the 20W/5.5W.
Sorry for this late reply. I made some benchmark and released a video: czcams.com/video/UKGKnOxY3ac/video.html
Here you can find the file: lasergrbl.com/resources/circle30.nc
Спасибо
this video was very useful.... thanks
Hello. my laser beam is low and does not cut at all. what could be the reason, please help
Can be dirty or died.
On my site LaserGRBL.com faq session you can read about died laser.
Here in CZcams my channel how to clean laser lens
so if we bought the 20 watt laser and we want to get the resolution of the 15 watt laser can we just turn down the power of our 20 watt laser?( i just ordered the 20 watt version like 10 minutes ago and I cant wait for it to arrive.)
no, unfortunately this is not the case: there are different diodes, it is not just a question of how much current
@@lasergrbl ok thank you
Отличное видео, много полезного, Благодарю Вас за этот ролик!
Does it possible to use CO2 laser lenses for laser diodes.?
Buonasera ho un problema con laser grbl quando premo il pulsante per mostrare la luce dove incidere non funziona e mi caccia il messaggio missing the expected g code world value or numeric format is not valid! Mentre se prendo il file e lo metto in scheda sd sullo slot del display dell’atomstack x7 la luce di assistenza funziona bene!
Fai una foto e caricala da qualche parte. Così come lo descrivi non posso capire
Что за лазер на 80 Вт сейчас на АлиЭкспресс?
Hello,
Great video.
I still have a question, in the video you cut wood, what was the distance between the lens and the wood and where was the focal point of the lens adjusted?
When cutting wood I am still a beginner and am grateful for every wheel.
Hi Gerd
The laser module I used is Ortur 20w fixed focus. It comes with a spacer of 2cm height that can be used to put the workpiece at the best distance.
Fixed focus lensa are generally more uncomfortable to use because the distance with the pieces is very small, but the focuins is always accurate and the lens has less power loss (simpler optical schema).
Thanks for the answer.
Excellent video, very clear and thorough! Thank You. I would like to ask Your opinion regarding a new 80w diode laser I just found on aliexpress, that seems to be manufacture combining two diode lasers beam by a prism. It seemed a good idea but I do not know if trustworthy.
First of all, you should know that 80w is not possible. Highest diode power is 7-8w optical (~25w electrical power) so a pair of this diode can do 15opt/50eln watt.
Said that, i read a lot of enthusiastic comment about this module. They have very good price/power ratio, and they are fast for cutting up to 10mm.
I have not the opportunity to test them by myself, so I can't say more.
My doubt are about the heatsinking of this huge power (temperature kill laser diode, and 50w is a lot of power to cool) and spot diameter (i don't think it could be too precise)
thaks for your work man.
Atom stack A5 pro have Air assistance ?
thanks men, you are great
Bravo! Risetto alla soluzione che hai sclto tu per l'ugello dell'air assist ci sono vantaggi ad usarne uno che faccia uscire il laser in asse con l'uscita dell'aria? In pratica un cono dotato di presa per l'aria che si inserisca nella lente e spari l'aria dal foro in basso insieme al laser. E nel caso ne conosci qualcuno in vendita per il Laser Master 2 Pro?
tecnicamente è una soluzione migliore, ma difficilmente praticabile perché per essere efficace il getto d'aria deve essere molto forte e questo è compatibile solo con un ugello molto piccolo, diversamente rimuove solo il fumo ed evita alla lente di sporcarsi ma non ha l'effetto di soffiare via i residui di combustione dal solco. ho visto comunque soluzioni artigianali simili a quella che descrivi
très intéressant et très amusante prestation bravo
Sehr schön gemacht. Vielen Dank für das teilen. Weiter so!
спасибо за видео. у меня как раз китайский лазер на 40. буду делать как у вас подачу воздуха, спасибо за подсказку.
Hi Is it possible to cut 3mm acrylic in one pass with a diode engraving machine?
I never try on acrilic, but the engraver come with a small piece of acrilic of this thickness and I have this data from the factory:
Engraver: Atomstack A5 PRO
Material: Acrylic 2.8mm
Power: 100%
Speed: 310 mm/min
Passes: 3
@@lasergrbl Thank you for your reply, I think maybe a Co2 40w will possibly cut 3mm acrylic. Cheers Richard
Helo! Does this machine cut and engrave in 2mm golden acrylic?
usually this machine came with a sample piece of acrilic to cut, so I believe it can (but never try personally)
great video , thanks!
thats a really cool video. I think i made a mistake buying 30w from atomstack as i want to engrave not cut. what if i drop power of the laser ? that would give me better results in quality??
You have not made a mistake. The 30w will engrave very nicely with fewer passes than a cut operation.
dear arkipita, thanks a lot for this video, very good job !!!
about what kind of air assist talking you ? aspire or blow ?
If is to aspire, i would like used an old household vacuum cleaner to create an global air solution : depression to keep parts light on place (like cardboard, paper or laminate sheet and wood veneer...), to aspire smokes generate by engraver and also to aspire closer of laser...
If is blowing, are you thinking i could use brushless cooling fanbrushless cooling fan like on head of 3d printer ?
Thanks of your response !! Enjoy !
I think blow is better, but I never try vacuum cleaner to remove fumes
blow also help keep cold the engraving area, helping prevent overburned edges
@@lasergrbl Thanks a lot for your response, really great job !!
good explanation! thank you.
❤ respects bro. thank you.
Good evening!
I watched a lot of videos with you and admire you !!!
But I have one problem at the expense of the diode laser module and I want to consult with you ...
How can I contact you ???
Ciao complimenti per il video e il canale, avrei una domanda da farti, quale laser è più adatto per il taglio di tessuto con una dimensione (area di taglio) di 60cmx80. Grazie anticipatamente
mi spiace ma nn so rispondere con molta competenza su questo tipo di materiale. ho fatto alcune prove con diodo 20w e il cotone si taglia facilmente, però dipende anche dalle tue esigenze e volumi (per hobby o per lavoro?)
@@lasergrbl per prototipi nella mia azienda prevalentemente è cotone e acrilico (stoffa ). La cosa che mi preoccupa un po è il fatto che si possa bruciare sui bordi...
@@AntonioLovesMarta su cotone non ho avuto bruciature, su acrilico non saprei
@@lasergrbl ok grazie mille per la disponibilità, sei stato molto gentile e di aiuto. Grande
Teşekkürler! Thanks
Спасибо! Действительно нужная информация в кратком и понятном формате.
Hi friend, how can to find a little diode at the 0:56 min please?
Ebay or aliexpress. Most common model are NUBM0A, NDB7A75
@@lasergrbl Thanks friend, do you know of the two which is the 20W (5.5w) one?
Does using diode laser at 100% power damage it? thank's in advance
Overheating diode is bad, not the power itself. If diode temp >50° diode lifespan rapidly decrease.
If you feel your module hot or warm I suggest using 90% or using cooling cycles (you can configure cooling in LaserGrbl settings).
Please note that winter/summer temperature can make big difference.
@@lasergrbl thank you so much.
@@lasergrbl but how can I prevent overheating? What causes it in common?
i bought a 6W laser with declared 2,2W optical output, but you say 7W lasers only output 1,5W. Do you think the aliexpress store was just saying random numbers or could it actually be 2,2W. I had no experience with lasers before buying this one.
link?
@@lasergrbl
a.aliexpress.com/_mtpbNep
Well, the rate between electrical power and optical power in not a constant but it strictly depends by the laser diode itself.
Some diode perform better than others and the only way to know the real power is to read the diode datasheet but, unlucky, noone declare what diode is using!
Another way is to measure the optical power with a laser power meter, but it is a tool that cost more than 100$
Sincerely i think that your 6w could be 1.5 optical power (looking at the price) but without a measure it is difficult to say
is it possible to get that test pattern
drive.google.com/file/d/1NEiNVmMAeCPMiyAtyuqpYmqcxYD7ziz5/view?usp=drivesdk