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I did something along the lines of 3 and 4, based on the scratch n etch approach discussed from time to time in this group. Here's my approach: https://reprap.org/wiki/PCBScriber

Not sure if you’ve entirely missed the point. You burn off the paint exposing the copper, then you drop it into the etchant. The remaining paint (on the tracks) acts as your mask. Yeah

CO2 laser is worst selection for this application.? The wavelength of the CO2 is *extremely* reflective on copper.? That's why their mirrors are made of copper.? (20+ years as a CO2 laser service

Working... Nuno T.

It’s been on the to-do list for a while. The ‘kerf’ of a CO2 laser is about 0.15mm, say 6 thou when cutting stuff, so I guess that’s a reasonable guess for paint on copper. The actual

Let us know when you try it. I’m very interested in the idea. Can you measure the laser line width when you try it? Jeff Sent: Wednesday, June 6, 2018 2:42 AM To:

I’ve been meaning to try the laser paint PCB thing. I’ve done similar which is to etch the metal by burning the paint with high power, like these:

Ok 3d printers are all the rage. I myself built one like 7+ years ago But I have a fab idea based on a laser cutter idea I have seen. They used black matt paint and laser ed away the paint and etched

This is a link: www.learnmorsecode.com/ch/index.html this is an image link: http://www.learnmorsecode.com/ch/IMG_7312.JPG attached is an image

Monthly Reminder for Homebrew_PCBs list, please read: Messages and threads: Please do NOT start a new thread by replying to another message. Even if you change the subject line completely and trim

Happy to follow. Yahoo really sucks. All e-mails are scanned. I attempted to opt out. Believe me, there are more than 200 partners that are stealing our privacy. There is no global

The changeover for Electronics_101 went smoothly, it took about a week from creating the group, then it was over in a short time. http://groups.io/g/electronics101 I've just created

In article <pbkkuu+1mtrlt2@...>, goofy_36@... [Homebrew_PCBs] <Homebrew_PCBs@...> wrote: Same here. -- Stuart Winsor Tools With A Mission sending tools across the

Monthly Reminder for Homebrew_PCBs list, please read: Messages and threads: Please do NOT start a new thread by replying to another message. Even if you change the subject line completely and trim

HI DonThe reason some of the people here are getting repeatable good results and others like yourself not so good is a lot to do with the type Toner your particular printer usesI use the Samsung

Toner transfer is only one method, the group is about more than that. But it is up to each individual to determine if they get enough out of the group. Steve Greenfield AE7HD

I'm thinking to leave the group as I never ever used toner transfer after I tried it. I use presensitsed boards. Black opaque image on clear photo set film, a 30 year old UV sun lamp... A photo tray

With the yahoo's new policy, I'm abandoning my registered mail addresses. Consequently: no yahoo address no groups. I hesitated for long but yahoo is really sucking too much. That's a

I lurk a lot and keep up on the discussions. Just not one to post anything unless I have something to add or a question.

We are still here. Just short of topics... Nuno T. _____ Sent: domingo, 22 de Abril de 2018 23:30 To: Homebrew_PCBs@... Subject: [Homebrew_PCBs] Re: Thinking of moving the