User:Warddr/etsen

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Contents

Benodigdheden printplaten etsen:

INITIELE KOST: €30

Verbruiksgoederen:

PER PRINTJE VAN 10x15 ~€1,5, dit is redelijk groot, dus kan altijd nog in 2 worden gezaagd

The chemicals we use from left to right: Ferric Chloric Acide, soda water 20mg / 1l, stronger soda + baking powder

Manual (draft, definitive version will show up as an infrastructure project if finished)

Safety

To make PCB's we'll use acid to etch them. In our case we use Ferric Chloric Acid (Iron(III) chloride, FeCl3). This stuff will leave permanent marks if it touches your clothes, and can eat away metal objects if they come into contact. This stuff is also corosive.

Wear a lab coat / bad cloths, and wear gloves. If you don't want to wear gloves make very sure you take your rings off your fingers.

DO NEVER POUR THIS STUFF DOWN THE DRAIN, IT WILL EAT AWAY METAL PIPES. It should be disposed off as toxic waste.

No toxic fumes are released when you use it at room temperature.

Never put the Ferric Chloric Acid in a club mate bottle, the metal cap will disappear.

Step by step manual

Step1: cut the PCB to size, and sand it with a sand paper (I used a 240) to sand away oxidation, and other stuff on the surface. Make sure the board is a little bigger as the PCB you designed. Don't touch the metal surface with your fingers after sanding it.
Step2: cut the PCB dry film to size, a little bigger as the pcb. Try not to put this in the light for too long (10 minutes is usually fine, but light also contains a bit of UV). Make sure to put the excess back in the tube ASAP!
Step3: put a piece of tape on either side of the dry film (better to use transparent home / garden & kitchen tape), and pull them apart, repeat until a transparent layer comes off the dry film.
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