How to make high quality PCBs with Photoresist Film Sheet

[SevenZero]

Step by step guidance to make high quality PCBs with photoresist film sheets.

1. The film is folding in between of two cover film, remove one side first.

   

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2. Place the film on copper board, clean the copper board with sand paper beforehand, so it's easy to stick on it, make sure the film is flat, and without bubble

   

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3. Also possible to use an heat transfer machine to place the film like this (or heat the film up with iron, not too hot, so the film is fixed on top of copper plate)

   

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4. Print Circuit board with photo film

   

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5. Exposure the circuit onto copper board which are already covered by film. Depends what kind of light you use, time is varying from 1 mins to 30 mins.For this UV light, you only need 1-2 mins

   

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6. Developing, remove the another layer of film, leave it in developing liquid which is pre-mixed with water by 1:00

   

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7. Etch

   

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8. Removing the rest film by film remover liquid pre-mixed

   

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[davejo]

It is only for hobbyist, you will not get quality PCB for fine pitch components and thin tracks and also you need PCB drilling experience.

pcb assemblies