Following the last publication about PCB (printed circuit board) manufacture, we present another useful project. The corrosion with iron perchloride, is a slow speed process, but we can accelerate the process, by agitating regularly the solution. To do this, we created a simple device, able to make an automatic PCB agitator, using an old DVD desktop drive.
Step 1: Disassemble the drive
Step 2: Connect the cog with a wire
To support the container’s base, it was necessary to put a screw in laser’s support. Since this drive already has a hole, we just put an M8 screw. To hold the screw, we use two nuts, one for tightening the bracket and the other to create the spacing for the drive’s cover.
At this point, it’s convenient to see the screw’s movement caused by the cog, and make a cut in the drive´s cover, with the appropriate size so that can move to the rear and to the front.