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Toner Transfer is not an option for large quantity or quick production and in my area I could not find any photosensitive sprays.

I tried with screen printing emulsion, but it does not stick with the copper quite well after exposure. I tried also with plastic paint by screen printing process, but I couldn't achieve the resolution I wanted (12 mil trace with 12 mil clearance).

The plastic paints sticks with the copper quite well but it is not VU Curable. Does mixing the plastic paint with the emulsion will make any use to me?

If it still don't work I got a last option of this. But it is not available in low quantities. They provide a minimum of 20kg. But for my need 1kg will be enough.

What should I do?

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    \$\begingroup\$ CNC milling is an option you haven't considered. However, I used to make all my own PCBs. I don't bother now, with services like iTead, OSHPark, etc, being so cheap. \$\endgroup\$ – Majenko Dec 1 '14 at 10:52
  • \$\begingroup\$ I want something local, I don't like it when the shipping cost and custom charges exceeds the actual cost of the product, or may sometimes become the double of that. CNC Milling only replaces the etching and drilling part, with very costly machine, not suitable for my use. \$\endgroup\$ – Jimut Dec 1 '14 at 12:00
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    \$\begingroup\$ You mean there are NO PCB manufacturers in India??? That's hard to believe. \$\endgroup\$ – EM Fields Dec 1 '14 at 13:08
  • \$\begingroup\$ No! I didn't said that. There is no online one with such easily usable interface (I mean like it is not as easy as just submitting the layout and getting it in front of your door), I know some manufacturers locally, but I want to do it myself. As I know they do it by screen printing, maybe with a less resolution. I think its time to decrease my resolution any try another time. \$\endgroup\$ – Jimut Dec 1 '14 at 14:59
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    \$\begingroup\$ Doing it yourself is not a wise choice for quantity. It takes investment in tools, technique, and material handling to make boards efficiently, and unless you want to get out of the design business and into the board making business instead, your time is better served developing a relationship with someone in that business who can get you 10 pieces by Friday. When you only need one, and you need it this afternoon, then it is sometimes appropriate to get out your printer and your iron and your etchant. \$\endgroup\$ – Chris Stratton Jul 5 '15 at 15:57
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I saw a video once where a guy used finger nail polish & finger nail polish remover (acetone). This question is a bit old by now, but that technique is inexpensive & may work for some people--but, perhaps not for 12 mils precision.

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If you must roll your own, try dry resist film; there'a a zillion videos on YouTube about how to do it.

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  • \$\begingroup\$ I know about dry resist film, but it is still a costly and time consuming process and moreover that it is not available in India. \$\endgroup\$ – Jimut Dec 1 '14 at 12:01

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