... for avoiding charcoal, you can spraypaint the PCB, then remove only 90% of the copper, and last remove the last remains with acid (I've used 1:1:1 30% Hydrochloric acid, 30% H2O2 and Aq.Dest). Or use PCB's with aluminium-core, then you can remove all the copper and the ceramic isolator beneath (the aluminium core is pretty resistant against the fiber-laser).

That's so dang cool.

Burnt FR4 is slightly conductive. Could cause arching at high enough voltage.

@CraigHollabaugh

Ай бұрын

Good point, I didn't move past this point. Electronoob recently did a complete video on making pcb with a fiber laser. Check it out.

Did you get the traces the way you wanted them? Any broken ones?

Nice video. I'm also planning to have one together with a CNC mill and drill for the holes and cutting but the alignment process might be tedious during tool transfer

@CraigHollabaugh

Жыл бұрын

use alignment pins.

Thank you for sharing. Are you able to share more details on the type of laser source and settings?

@CraigHollabaugh

Жыл бұрын

sure, next time I'm in the shop I'll send these to you.

@CraigHollabaugh

Жыл бұрын

Check my YT posts to get the fiber laser settings used here.

@AngelR1227

Жыл бұрын

@@CraigHollabaugh Thank you.

How long time to make this pcb?

Hi Craig, could you share the model of the laser you are using? Not the parameters but the model of the product. Thanks in advance!

@CraigHollabaugh

Жыл бұрын

US Stock Fiber Laser Engraver 30W JPT Fiber Laser Marking Machine with 80MM Rotary Axis,Engraving Area 175×175mm a.co/d/gWSLxM8

Quel model de tête laser permet un tel résultat puissance? réf, prix

How small is that board?

Could you please describe the process you used to find the best settings ? I'm trying the same with a 50 W Raycus and no luck at all, the copper doesn't mark :( It's in focus (red dots aligned) and I'm using 90% power at 20 kHz

@CraigHollabaugh

Жыл бұрын

Check my community post, there's an image there of my settings.

Excellent !!! I buy an LaserPecker 3 but with 100% and 3 passes cant eliminate the coper layer

@frankherrmannweilburg4436

3 ай бұрын

Laser Packer is not really a Laser, its a LED flashlight.........................

Also I would like to see the layers in lightburn.

@CraigHollabaugh

Жыл бұрын

are you talking about these? yt3.ggpht.com/xBtkD7yEdlWEO9qsEfc0eDtaTpBxMaOaF1vxlOy5nhwTCa07n9HnEJ0BX1unyswwaxCU1mTa8zAHQYs=s640-nd-v1

@oldekline

Жыл бұрын

@@CraigHollabaugh No first time i watched this I thought it was multiple operations. Now it looks like two passes with as starting angle of 0 with a crosshatch. Might be a good move to do a line only pass to isolate everything.

@CraigHollabaugh

Жыл бұрын

@@oldekline OK, thanks.

So you're burning away the copper and leaving burnt - and potentially conductive - fibreglass in its place. How's' that useful?

@Bezulba2

7 ай бұрын

Useful as in how a lot of pcb's are made, but instead of etching away the coper, he burns it away.

@frankhovis

7 ай бұрын

@@Bezulba2 By burning the PCB he's carbonising the fibreglass and making it conductive. Its useless.

Pleases can you give me the laser paremeters ?

@amir.victor

5 ай бұрын

Speed : 500mm/s Power : 75% Frequency : 20khz Line distance of hatch : 0.05 Cross hatch Mark loop : 3

Gual potencia lazer

Ce genre de laser coûte une fortune et difficile à trouver contrairement aux lasers qui grave bois ,cuir etc... ce modèl vaporise le cuivre sa longueur d'onde est d'ailleurs plus grande 1020 environ contre 470 pour les autres

@CraigHollabaugh

3 ай бұрын

watch this Homemade PCBs with Fiber Laser - 0.1mm Clearance - electronoobs kzread.info/dash/bejne/gqONxcyyl8uqqJc.html

Useless video, no information whatsoever!

@CraigHollabaugh

4 ай бұрын

I agree, watch this instead from electronoobs kzread.info/dash/bejne/gqONxcyyl8uqqJc.htmlsi=jjUmkQBlW5HTC_Vb