Introduction: DIY PCB

By

goal - in the home to create a printed circuit board

Supplies

textolite plate coated with copper on one side

fiber laser raycus 30w

syno-galvo SG7110

Step 1: Preparation

The task was to engrave the circuit board as accurately as possible for subsequent etching with iron chloride.

First, I degrease the metal side of the workpiece and paint it with black paint.

After the paint has dried, I put the workpiece on the work table.

Step 2: Software Part

Then I work in CoralDraw. On the Internet, I found the type of printed circuit board that interests me. For further more convenient work, I converted the raster image into a vector image using outline tracing.

I needed to burn off all the paint outside the conductive paths. Therefore, I invert the image by excluding it from the rectangle.

Step 3: EzCad

Then I save it in .plt format. Run EzCad and import that file into it. I set the shading with a line frequency of 0.03 mm.

I fire up the laser. Working mode 1200 mm / s, power 28%. In this mode, the laser burns paint in those places where copper will have to dissolve in the future.

Step 4: Аirst Result

Here's what we got after engraving.

Step 5: Etching

Next, place the workpiece in the previously prepared solution of ferric chloride 3. Put the workpiece with the processed side down.

Etching can take 5 to 60 minutes. In my case, it took 12 minutes.

Step 6: Final Result

Here is the final result after rinsing off the paint with isopropanol.

In the finale, I discovered that there were mistakes. (visible in the last photo) I think I accidentally ripped off the paint before etching.