Casually Laser-Exposing 0.2 mm PCB features on a 3D printer

  Рет қаралды 508,105

Marco Reps

Marco Reps

6 жыл бұрын

Cetus 3D Printer: shop.tiertime....
Laser module: www.banggood.c...
Cheaper 3D printer www.banggood.c...
My patreon: / marcoreps
Holder .stl file: drive.google.c...
Test layout Eagle .brd file: drive.google.c...
In this video I wanted to make a heated build platform for my cheap 3D printer, but got distracted by another interesting feature of the Cetus. It has an unused output on the print head, that can be controlled from within gcode. That opens up a ton of possibilities, but what I am most interested in is, as always, laser PCB prototyping. Will that work? Spoiler: Yes, it will. Incredibly well.

Пікірлер: 290
@seasdfghjkl
@seasdfghjkl 6 жыл бұрын
"warning labels are indicators of good tools" I love this guy
@Wer38Info
@Wer38Info 4 жыл бұрын
Its kinda true though lol
@liveen
@liveen 2 жыл бұрын
The accent, tone of voice, plus lines like that one are exactly what I look for in this kind of youtuber. They always know what they're talking about, and the videos are always that one perfect style of video. Even getting some minor I Did A Thing vibes here, I love it!
@RobertSchauer1981
@RobertSchauer1981 6 жыл бұрын
7:29 - Thank you for letting that sound ring out completely; that was very pleasant.
@sb7687
@sb7687 6 жыл бұрын
You need a fan pointed at the work piece. The laser heats the air around the traces and that causes local refraction, so your laser accuracy is wobbly. If you keep a fan on, then that moves the hot air out of the way quickly, so you'll get more consistent lines.
@leocurious9919
@leocurious9919 6 жыл бұрын
I somewhat doubt that a few °C hotter air will have _such_ a drastically different refractive index that it bends "blue" light so much in such a short distance.
@sugarbooty
@sugarbooty 6 жыл бұрын
Not to mention it could damage the lens on the laser
@ysong89n0e
@ysong89n0e 6 жыл бұрын
Maybe is the plume created from ablation cause scattering? not sure just guessing
@spencergeorge4941
@spencergeorge4941 5 жыл бұрын
Leo Curious You say drastic, but we are only talking about sub .1mm vibration here.
@rosebarnes9625
@rosebarnes9625 3 жыл бұрын
@Blondie SL I know, how did we survive the stoneage 70's???
@shadowfoam3491
@shadowfoam3491 4 жыл бұрын
Between this kind of calm, deliberate narration of technical videos like these and clips of TNG where Picard admonishes people, I'm in a very happy place right now.
@casino130
@casino130 6 жыл бұрын
This is a really great presentation of laser PCB etching! I was looking at the Cetus3D because of the linear rails but had reasoned that it was of no practical use for my needs printing Ultem 9085, until now I see what can be done using it as a laser machine and only $299 plus parts that’s awesome! The download links, intelligent straight forward content that I can watch all the way through while enjoying the ever so subtle wit of the presenter is quite refreshing! Subscribed!
@cfeigel
@cfeigel 6 жыл бұрын
7:04 -- "It probably just uses the Google Translate feature." LOL! Looks like a great project. Thanks for the laugh!
@null-00000
@null-00000 5 жыл бұрын
Hey man, I know its a bit late, but if you use a raspberry pi with octoprint on it, and connect a camera, it has an option that will tell the hotend to move out of the way after every later and it'll take a picture and store it
@xilw3r
@xilw3r 5 жыл бұрын
and at 2:50 he just lets that laser drop and hang by the wire :D freaking comedy club, love it
@Inspironator
@Inspironator 6 жыл бұрын
I really like your humor!
@maultrommel
@maultrommel 6 жыл бұрын
easily does 0.1mm features (65mA laser current, 405nm - 750mm feedspeed, careful with accel times) - ping me if u need some data (i burned a lot of bungard to get to right values ;)
@jojoposter
@jojoposter 6 жыл бұрын
maultrommel ping :P would you mind making your findings public? While i don't own this printer, i am sure others would appreciate it. :)
@PhG1961
@PhG1961 6 жыл бұрын
Looking forward for the next video on this topic. Great work ! Impressive workshop/equipment you have.
@myetis1990
@myetis1990 4 жыл бұрын
good touches of humor, like! because of the nature of step motor(steps generates mechanical vibration), you will not be able to get ultra-precise lines unless you use high gear ratios on each axis with some renunciation of speed, As you know, you can use bldc motors driven by sinusoidal or FOC control (like odrive) to reduce vibrations, it may be more costly but prototyping machine are also high priced
@Factory400
@Factory400 6 жыл бұрын
The hard part is not making small etched features - it is the drilling and vias that make a PCB useful for anything more than a blinking LED project.
@charliemillhollin4471
@charliemillhollin4471 6 жыл бұрын
For a really good timelapse try attaching your camera to the build plate. I did it to my printer and you can see the part grow and it is really cool. I just attached some spare aluminum cut into a strip and screwed the aluminum to an unused hole using a nut and bolt. Make sure it is pretty stiff or you will get some wobble in the timelapse. Good luck!
@GeorgeTsiros
@GeorgeTsiros 4 жыл бұрын
0:24 the pause and the "huh?!" won me over 🤣
@KaspersMC
@KaspersMC 6 жыл бұрын
Hey :) you can try whit a lower Acceleration, i believe it will fix the wave /shaking/ vibration problem you can also Test your 3D Printer vibration whit that laser, draw square in each corner, then you can see if it shake more in some of the corner ( no it was not mean as a shaking joke ;) "hmm??? what this tiny transistor for" Haha! i love all your small lovely detail in your videos : ) thanks
@rich1051414
@rich1051414 4 жыл бұрын
Some of the squiggles will always remain due to resolution aliasing.
@RaduOleniuc
@RaduOleniuc 3 жыл бұрын
A software dividing the plate in chess squares and 2 actuators moving some laser mirrors will increase the resolution a lot more, as there will be no vibrations in the frame. You could use multiple lasers as well for higher resolution - 9 smaller squares being burned at the same time, with 9 lasers, for increased productivity.
@oliverszk
@oliverszk 3 жыл бұрын
2300 mw/2,3 watt 450nm laser with TTL. I dont know if wavelength matter to cut somethink, but the Power does.
@goosenp
@goosenp 6 жыл бұрын
Hi Marco, thank you so much for this brilliant video! Could you try using the laser to make a soldering stencil in this set up. Also, you mentioned improvements that you made, could you go into more detail about that?
@reps
@reps 6 жыл бұрын
I meant improvements for the other machine (EleksMaker), but yes, I'll definitely show them! Stencils, maybe by the end of the year or early 2018
@ailtonmk11
@ailtonmk11 2 ай бұрын
Congratulations on the beautiful videos, I wanted to know if I can machine PCBs with a 20 watt diode laser
@LeckieInstallsLondon
@LeckieInstallsLondon 5 жыл бұрын
me every time I plan to do something "im going work on the heated bed and whats this random transistor for?" 12 hours later... "Ill just work on the heated bed another day" lmao
@helmut666kohl
@helmut666kohl 5 жыл бұрын
Wouldn't lowering the printhead lessen all the angular deviation you are getting? As in: "less amplitude of the wobbles". Also maybe try using the laser with a tiny masking dot right above the board?
@moracabanas
@moracabanas 6 жыл бұрын
If you manage to tune the jerk and acceleration and decrease them from the firmware side, you could stop that axis dependent vibrations propagated because the small scale. that adjustment just eliminate the resonances.
@GearDownForWhat
@GearDownForWhat 6 жыл бұрын
I've seen a ton of your videos. finally subscribed! great videos!
@Degenerate76
@Degenerate76 5 жыл бұрын
Nice mod, but I wonder if there is a more direct way to do this... Given that the photo-resist is a layer that polymerizes when exposed to light, to protect the copper layer from the etchant, and you have a 3D printer which is designed to lay down layers of polymer anyway, perhaps there is a suitable polymer that could be directly printed in a single layer on a plain copper board, avoiding the necessity for the laser, photo-resist and developer?
@thousandparadox
@thousandparadox 6 жыл бұрын
Excellent results. Perhaps bringing the laser diode closer to the bed would negate some of the wiggles. At least on the print head axis.
@code4chaosmobile
@code4chaosmobile 5 жыл бұрын
Warning labels are a sign of good tools.. I'm going to use this line often :)
@ray_gannon
@ray_gannon 6 жыл бұрын
Always a good watch! Thanks for uploading
@PartTimeRonin
@PartTimeRonin 6 жыл бұрын
Get yourself some JST XH connectors and a crimping tool then, if you plan on doing mod stuff for electric from China it worth the money :)
@fadywilliam3176
@fadywilliam3176 2 жыл бұрын
i waana ask a very basic question, lets say i want to have a cnc to drill pcb holes, how can get a correct orientation/alignment in order to make sure that the drill will go to the exact location where the drilling points actually are, without deviation ?
@ensoniq2k
@ensoniq2k 5 жыл бұрын
There are some nice timelapses to find on youtube that use the method you discribed. They look very statisfying. Way more than the ones with jumping print heads
@rikaige
@rikaige 5 жыл бұрын
Hi Marco! I have a couple of questions to ask you, I'm building a multifunction 3D printer + laser/miller for PCB work, I found your video very clear and helped me already a lot with flatCam and other tricks, my setup is based on Marlin firmware, that doesn't (completely) support G0 rapid movement (G0 works but at the same federate set for G1, not rapid), how did you manage to move the laser faster in ''laser-off'' movements? other issue with Marlin is that M42 to control the laser output is not buffered, thus I need to put an M400 command every time a call the M42, are you using a different firmware or trick to sync the laser switch with the movements? thanks in advance and my best compliments for your works!
@josehernandez5671
@josehernandez5671 5 жыл бұрын
Call any pring shop or silk printing shop and ask what their imagesetter provider is. They will happily print you a film with 4800dpi positive. Nothing can yet top that quality. 90's technology.
@brendanhansknecht4650
@brendanhansknecht4650 4 жыл бұрын
Do you still have the test file you used in this? I want to run it on my new laser to see how it performs.
@ZoeyR86
@ZoeyR86 5 жыл бұрын
Change the marlin curve divider in firmware and set jerk to a low number like 5 it will clean up the tiny round pads also belts don't use the little spring like belt tensioner it adds springy-ness to the belts make the g#-tight
@JustAnotherAlchemist
@JustAnotherAlchemist Жыл бұрын
I, personally, would appreciate an updated video on FlatCAM. 2015 is aeons ago in software land.
@JustAnotherAlchemist
@JustAnotherAlchemist Жыл бұрын
Edit:I guess so is 2017 :/
@dazmatic
@dazmatic 6 жыл бұрын
Couple of things to check. Looks like some of the wobbles come from change of direction, check the machines axis for backlash, huge huge quality killer is backlash.
@dazmatic
@dazmatic 6 жыл бұрын
Also, check the linear rails for adjustment, might need tweaking a bit tighter to minimise the rattle wobble effect from the balls rolling around. Looks great though!
@sto2779
@sto2779 3 жыл бұрын
Would it be fine to use 405nm with 500mW that has TTL/PWM control? I should be able to bring down the wattage due to controlling the duty cycle, right?
@omerk8403
@omerk8403 6 жыл бұрын
Where have you been bro we missed you...
@AtomkeySinclair
@AtomkeySinclair 6 жыл бұрын
Excellent. I expect this can be done with other 3d printers. I have an anet a8 just in the mail. I hope its possible with it. Ill see once its assembled.
@3D_Printing
@3D_Printing 6 жыл бұрын
3:25 very nice Raft as well :)
@alexnik8334
@alexnik8334 6 жыл бұрын
Vibration by X- axis, Y-axis is perfect, so diagonal lines are middle quality.
@RiderRickMaker
@RiderRickMaker 5 жыл бұрын
Idea: Use the bed to "shake" and heat the board etchant etching etcher thing that etches..! :)
@MCsCreations
@MCsCreations 6 жыл бұрын
Really nice, man. Looks promising.
@jacobhn2
@jacobhn2 4 жыл бұрын
From a computer to a projector for light the pcb, or a diy laserprinter
@josehernandez5671
@josehernandez5671 5 жыл бұрын
23bit absolute servo motors could vastly imporve the print. Also spring-loaded grounded ballscrews and of course pre-loaded B class linear guideways.
@ChrisPrefect
@ChrisPrefect 6 жыл бұрын
Try placing the Cetus on the ground. My results where MUCH better compared to the printing done on a table!
@ArtyomGalstyan
@ArtyomGalstyan 5 жыл бұрын
you should use optical stabilizer attached to a laser diode to get rid of vibrations.
@thebeststooge
@thebeststooge 6 жыл бұрын
I had the same version from Eleks as yours only in the 2500mw version and I finally had enough as it just could not engrave all that well and I guess it was that electrolytic you showed is probably in it as well. I would have needed some way to be able to toggle the laser on and off much faster though it wasn't very good at greyscale either. I have an eBay Chinese laser 50w (really 40w) CO2 that will be here on Thursday thanks to that blue laser from Elek's being so crappy.
@paulg.3067
@paulg.3067 4 жыл бұрын
How did you determine the "Tool dia" value in FlatCam for a Laser?
@ianboard544
@ianboard544 2 жыл бұрын
I switched driver boards on my 3D printer to one of the 'quiet' ones - I presume this shapes the drive current or does micro-stepping. In any case, the vibration level went way down. I was wondering whether this would improve the quality of the traces on your setup.
@TilmanBaumann
@TilmanBaumann 6 жыл бұрын
I need to see what you will use with that other LED driver board!
@reps
@reps 6 жыл бұрын
One of many LT demo boards lying around. I don't have an application yet, and because it is from 2005, it's not that great by todays standards.
@rondlh20
@rondlh20 6 жыл бұрын
Very nice, great tip to convert the gcode
@seasdfghjkl
@seasdfghjkl 6 жыл бұрын
haha I thought so too...
@hrishikeshb
@hrishikeshb 6 жыл бұрын
I can’t wait to try this. How did you get the hot end bit to synchronise with the camera for the stop motion?
@nukepizzaa
@nukepizzaa 2 жыл бұрын
I have deep love for you man
@johnfrancisdoe1563
@johnfrancisdoe1563 6 жыл бұрын
Do you really need all that extra mass on the moving head? Maybe the heat from the laser could be dissipated into the head itself. A more extreme weight saving technique is to only move a mirror, while the laser doesn't move, at least in the X direction. Laserprinters and professional PCB factories do it that way.
@PartTimeRonin
@PartTimeRonin 6 жыл бұрын
Also maybe look into cheap LCD based SLA printer, the resolution is super high for something like this.
@nipunagunarathne4882
@nipunagunarathne4882 5 жыл бұрын
I found that the lens on my laser jiggled a little bit during movements, causing wiggles like that. perhaps its not the frame vibrations after all
@poptartmcjelly7054
@poptartmcjelly7054 6 жыл бұрын
you could change the resistor to 15 or 20 ohms and decrease the speed.
@ameliabuns4058
@ameliabuns4058 4 жыл бұрын
Wouldn't the circuit get exposed with the surrounding UV? What chemical did you use for the etching? Can u pleaaaase give out more info on your our diy PCB process pleaaaaase I wanna make them with my own printer!
@MPVfan2
@MPVfan2 5 жыл бұрын
Maan. I love your humor! Keep it up! 😉
@rajz0r
@rajz0r 6 жыл бұрын
Greetings from BlackSea! Good job!
@AtomsLab
@AtomsLab 5 жыл бұрын
I know this video's a bit old, but have you tried using Octoprint and Octolapse for your timelapses? That's what I use for my timelapses, and it works out alright.
@michelfeinstein
@michelfeinstein 6 жыл бұрын
Maybe the lines are wobbly because of the stepper motors microstepping? (I also like the fumes theory as well)
@KarlMiller
@KarlMiller 4 жыл бұрын
Does anyone know what the laser wavelength range necessary to to etch the photosensitive copper clad boards this way? I am confused by the fact this laser has a wavelength of 405nm, but near to far UV light has a wavelength range of 100-400nm.
@Bodragon
@Bodragon 6 жыл бұрын
How did you make the onscreen text, "large" follow your movements? Did you do it manually or did you use some clever software? And if you used some clever software, did you write it yourself?
@Steven_Bennett_YT
@Steven_Bennett_YT 3 жыл бұрын
Great video, is your Cetus printer MkII or MkIII?
@albuswesly
@albuswesly 6 жыл бұрын
best video ive ever seen thanks for sharing!
@Rashombo
@Rashombo 6 жыл бұрын
Can't te laser be focused so you could place it closer to the board to reduce angular vibration?
@awesomefacepalm
@awesomefacepalm 6 жыл бұрын
Repetier server pro has timelapse that you can sync with the layers
@cliffchism9187
@cliffchism9187 6 жыл бұрын
Synchronized capture is easily accomplished using the Octolapse plugin in Octoprint.
@melody3741
@melody3741 2 жыл бұрын
That type of time lapse is called an octolapss I think.
@TheDefpom
@TheDefpom 6 жыл бұрын
Another nice and interesting video, good work once again.
@reps
@reps 6 жыл бұрын
You aren't too bad yourself :) Hope to see the Fluke working soon
@hudreous
@hudreous 5 жыл бұрын
How would I find out what all would be involved in upgrading the laser to something more high powered? 3000mW, for example?
@Markfps
@Markfps 6 жыл бұрын
Great video! Great humor
@mattmoreira210
@mattmoreira210 6 жыл бұрын
1:22 "for my application that power supply is not a dildo" LOL!
@m.t-thoughts8919
@m.t-thoughts8919 4 жыл бұрын
* "Ideal tho" ;)
@devilinside128
@devilinside128 6 жыл бұрын
hello, what power does the laser have? what type of pbc is ?? does he put any paint on the pbc ?, engraver directly on the copper?
@leozendo3500
@leozendo3500 6 жыл бұрын
YEAH! Thank you for such useful content.
@gastoncorthey7838
@gastoncorthey7838 2 жыл бұрын
Nice! What photoresist do you use?
@GearDownForWhat
@GearDownForWhat 6 жыл бұрын
You mentioned creating 3D printing time lapses with the based on nozzle position, Octoprint will actually do that for you!
@ChrisMuncy
@ChrisMuncy 6 жыл бұрын
Good morning Marco. Another great video, thank you sir. Quick question: On your bench, what is the device with the red, green, and yellow knobs?
@reps
@reps 6 жыл бұрын
Oltronix Power Supply B703 kzfaq.info/get/bejne/ithgecmLkqeXgGg.html
@ChrisMuncy
@ChrisMuncy 6 жыл бұрын
Thanks for the quick reply Marco and have a great weekend :-)
@fenixasin
@fenixasin 6 жыл бұрын
Is a 500mw 405nm laser powerful enough to do this? As that is what if offered for printers from crwality like the ender 3. Which is a 24v system and am having trouble finding a solution for this. Help please...
@dl8cy
@dl8cy 6 жыл бұрын
Awesome work again!
@CamiloACamacho
@CamiloACamacho 5 жыл бұрын
Did you remove the inside PCB laser and connect diode directly to constant power source?
@vinaybandekolla4950
@vinaybandekolla4950 6 жыл бұрын
Very nice video sir.. Right now I am working on convert 3d printer to a pcb laser engraving machine.. This tutorial is very helpful to me.. After pcb engraving you have dipped the board in water right.. No chemical process.. May know the software for laser engraving pcbs
@reps
@reps 6 жыл бұрын
The exposed boards are developed in a sodium hydroxide solution as recommended by the manufacturer. The software that creates the machine movements from PCB gerber files is called FlatCAM and the software that sends it to the machine is called LaserWeb
@eyeTelevision
@eyeTelevision 5 жыл бұрын
What kind of PCB are you using? Positive acting photosensitive ones?
@joecarnes9174
@joecarnes9174 6 жыл бұрын
Bet the double sided tape woulda dampened it enough for nice straight lines 😃 love yer format awesome vid 👏
@electronic7979
@electronic7979 4 жыл бұрын
Super
@jucsaba1692
@jucsaba1692 4 жыл бұрын
Can’t stop laughing... Google Translate... lol
@tcurdt
@tcurdt 6 жыл бұрын
Why do you raster the PCB? Following the traces will likely give you even better results.
@johnfrancisdoe1563
@johnfrancisdoe1563 6 жыл бұрын
Torsten Curdt You can use the fact that Gerber files were originally for plotters, though newer extensions may assume a rasterizer.
@Dr.Stein99
@Dr.Stein99 6 жыл бұрын
An x & y motion could possibly be more accurate with leads that small. Who knows what the motion control is doing, following contours and the path. If you see in the video, there is some variance when he does a close -up. Burning it just like a laser printer would print, going with the axis in the motions would save the headache of figuring out any bounce vibrations, abrupt turns, and/or backlash. It's a laser-fine beam, not easy to calibrate the mechanics down to that precision.
@tcurdt
@tcurdt 6 жыл бұрын
Not sure what you mean by "who knows what the motion control is doing". It would be generating GCODE you can even check beforehand. With such a lightweight machine getting rid of backlash shouldn't be such a big deal - and it's something that should've already been taken care of for the 3d printing. Despite the rails I would rather be sceptical of the cantilever design.
@tcurdt
@tcurdt 6 жыл бұрын
But in the end we are just speculating here - I would just give it a try and see if it makes a difference.
@Dr.Stein99
@Dr.Stein99 6 жыл бұрын
By motion control - I was talking about the the g-code interpreter and step driving hardware. Backlash has nothing to do with the weight of a machine. Take a look at 5:09 on the video, and study the etched board. The pattern printed on the board, I am certain - does not match his layout. I have to assume the g-code export handle's arc's, and if not by now - Mr. Sweedish Accent Guy certainly knows how to process out his own g-code by this time. At 7:55, the board shows a great improvement, but still with many blemishes. There are actually crisp arc's and lines - and then some portions the pattern is distorted.
@thedevleon
@thedevleon 5 жыл бұрын
How is the PCB coated? I'd like to do the same, but no idea how to make these pcb sheets...
@macfuehrbush
@macfuehrbush 5 жыл бұрын
Octoprint has a time lapse feature that does exactly what you are after.
@satishm4635
@satishm4635 4 жыл бұрын
Why you didnt show after etching?
@brantwinter
@brantwinter 5 жыл бұрын
Did you have any issue with the lack on base resistor on the NPN transistor on the Cetus main board you used to run the laser diode ?
@reps
@reps 5 жыл бұрын
I've only ran the laser for a single PCB and didn't see any problems in that short period
@brantwinter
@brantwinter 5 жыл бұрын
@@reps Thanks! I have since found a PDF one of the guy on the Cetus3D group posted showing all the missing base resistors ! Appalling electronic design !
@lv7603
@lv7603 6 жыл бұрын
I'm a new subscriber. Just wanted to say like the way you explain.
@reps
@reps 6 жыл бұрын
Welcome, thanks!
@jheissjr
@jheissjr 6 жыл бұрын
Is the second board, the board with the zebra, with etching? Looks good!
@T_TanksTinkers1066
@T_TanksTinkers1066 5 жыл бұрын
know its been a while but mind posting up some example codes what power that socket on in Gcode for us cetus users?
@tonyvo2023
@tonyvo2023 5 жыл бұрын
What about through hole pcb, laser can't drill the hole on pcb?
@vinaybandekolla4950
@vinaybandekolla4950 6 жыл бұрын
Thanks for your reply sir.. I didn't understand that you have exposed the board in chemical solution before laser engraving right.. After the chemical process you put the copper clad pcb under the laser engraving machine..
@reps
@reps 6 жыл бұрын
The PCB is made with a photosensitive layer. That layer reacts to UV light. If I point the laser beam at it I can expose areas that I want to remove later. After exposing it like that I have to remove the now exposed photosensitive layer. That is usually done in a sodium hydroxide solution which will remove only the exposed material. Then I have a board with remaining unexposed photosensitive layer and bare copper areas which can be etched away in the next step.
@DoCaosaCriacao
@DoCaosaCriacao 4 жыл бұрын
Friend good night! wanted to know what paint you used to make a pcb
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