DX SUPER A
Thank you for your design Juan!nice etching mister thimios looks really good
Regards
Juan
DX SUPER A
I hope finish as soon as i can
Sorry for my bad English!
Thanks again .you are welcome
Regards
Juan
I hope finish as soon as i can
Sorry for my bad English!
May I ask what technique you use for the etching? I would love to find a good method. I tried iron transfer but my Brother laser jet doesn't work well for that.
Thanks. Terry
Looks to me like he uses my preferred method, the photographic method, assuming my eyes don't deceive me. Best results possible at home as far as I'm concerned. Correct me if I'm wrong.
DX SUPER A
Hi friends...yes i use the photographic method and i take special boards.I can give more details soon.
Best regards.
Hi friends...yes i use the photographic method and i take special boards.I can give more details soon.
Best regards.
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Really nice
Nice mister Eathguake I have those too they are just right in size they use to have those in black and silver but all run out, the golden ones comes with the M3 screw that depends on the seller too but any way really nice 
Regards
Juan
Nice mister Eathguake I have those too they are just right in size
they use to have those in black and silver but all run out, the golden ones comes with the M3 screw that depends on the seller too but any way really nice Regards
Juan
DX SUPER A
Let's go to explain this.
Firt of all ... special material.Bungard photoresist board.
Second step.A high contrast film (high contrast black printed areas).
This is the most critical and difficult to make.3 options available.
1 photographic film ....difficult
2 photocopies in transparent film ...easier ....but this method give good results if transparents are high quality .We must use color transparents and color photomachine but we must print in black&white.
3 The easier and most cheep method. We must print on non-extended rice paper with a laser printer.With this method black isn't so black but we have the way to resolve this.
We must spray this non-extented rice paper with White Spirit.Now it's time to dry it with a hair dryer.
Now we have a high contrast Black&Withe film.
It's time for exposure.
We need ultraviolet radiation.
The easy method is to use LEDS.
These are cheep on the Ebay.
Order some of them 200 or 400.
See photo for details.
Exposure time is critical.In my case withe rice paper is 4 minuites
After the exposure it's time for development.
We need 9 gram. of caustic soda in 1 litre water.
Development time isn't so critical.If exposure is right we must see photoresist go out about 3 or 4 seconds after .
Attention......all photoresist must go out,3 or 4 minuites is ok.
Now wash pcb with plenty of water.
The final step is pcb etching.
There are many materials .I use Ferric chloride from bangurd.
Tryk .Put pcb in 45 angle and wetting with chloride continuasly.
When all is ok wash with plenty of water.
Attention. You must use gloves and glasses.
Good luck,
Let's go to explain this.
Firt of all ... special material.Bungard photoresist board.
Second step.A high contrast film (high contrast black printed areas).
This is the most critical and difficult to make.3 options available.
1 photographic film ....difficult
2 photocopies in transparent film ...easier ....but this method give good results if transparents are high quality .We must use color transparents and color photomachine but we must print in black&white.
3 The easier and most cheep method. We must print on non-extended rice paper with a laser printer.With this method black isn't so black but we have the way to resolve this.
We must spray this non-extented rice paper with White Spirit.Now it's time to dry it with a hair dryer.
Now we have a high contrast Black&Withe film.
It's time for exposure.
We need ultraviolet radiation.
The easy method is to use LEDS.
These are cheep on the Ebay.
Order some of them 200 or 400.
See photo for details.
Exposure time is critical.In my case withe rice paper is 4 minuites
After the exposure it's time for development.
We need 9 gram. of caustic soda in 1 litre water.
Development time isn't so critical.If exposure is right we must see photoresist go out about 3 or 4 seconds after .
Attention......all photoresist must go out,3 or 4 minuites is ok.
Now wash pcb with plenty of water.
The final step is pcb etching.
There are many materials .I use Ferric chloride from bangurd.
Tryk .Put pcb in 45 angle and wetting with chloride continuasly.
When all is ok wash with plenty of water.
Attention. You must use gloves and glasses.
Good luck,
Attachments
Last edited:
Juan Vargas has changed his Yahoo email adress
Now it is juanvargasdiaz1970@yahoo.com
regards,
Carlos
Now it is juanvargasdiaz1970@yahoo.com
regards,
Carlos
