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Printing a PC board Pt2
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New MessagePrinting a PC board Pt2 (modified 0 times) Miyu2002
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Just bring up to date on a very strange dream.

It looks like Dye based ink's may hold up to std etching solution! Ran a test using a small square of paper with black text and drop it into my normal etch tray with an amount of etch and did my normal actions that I do to a pc board. No problems after leaving it in for 40 minuts or twice the time I normaly use.

The paper was heavly stained and basicaly now a yellow tranparancey but the letter held! :) I was able to scrape some but where I did normal thing to it, the text held up very well. Was also able to wash off the solution like I normaly do.

Now need to get some ink on a square of PC marterial and give this a try. Nothing major but since my ink jet uses a J-Path need to think on this. proabbly just hold it steady and print a short pattern on it. If this will work and I can get the rest of the pipeline with a strate through printer then I can crank out board as faster than it would take me to dream them up!

I know regular sign grade vinyl holds up very well to etching solution also.

Wish they had copper particle ink cart for printers. ;)

04-10-2002 20:16:13

New MessageRE:Printing a PC board Pt2 (modified 0 times) vwbug19
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there's a cheaper way i use is i simply have 2 mylar transparencies(the one used for overhead projector) and i put 2 in copy machine tray and the orginal layout paper on scanning surface and hit one copy and 1st transparncy comes out and you have to replace the orginal with this fist tranparncy but flipped mirror image and hit once and you have the correct mirrored copy and place them with inkside face down on the copper pcb board and secured with tape and use hot iron do the ironing completly and the ink will have transfered like orginal layout :) and your'e ready to dip em'
but you have to practice that ironing to get a perfect transfer
04-10-2002 21:48:06

New MessageRE:Printing a PC board Pt2 (modified 0 times) Miyu2002
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Have tried this method. It works, but as you state it takes skill to get the iron right etc. Have look at the blue transfer sheets also. The best method is a dry-mount press that you can apply presure with a set amount of heat to a area but those are expensive.

The final scheme I am looking at is run the board through a "printer" which deposits the trace directly onto the PC board. No heat, wast material etc. Then just etch it. It sound possible since the pc board material I us is about as thick as a CD and places have modified InkJets to take a cd so could also handle a pc board. Also would allow to "silkscreen" parts labels etc.

Did try the vinyl method a few years ago and it work well but had to be carefull in lifting and deposit it on the pcboard. Weeding is also a problem. May try it again.

The next test is to try ink on top of a non-wicking surface. IE either a small pc board or some plastic material. And run the same test again.

04-10-2002 22:52:02

New MessageRE:Printing a PC board Pt2 (modified 0 times) preacher
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Why not silk-screen it on. You can pick up some basic silk-screen supplies at any educational supply house, and the process is very easy and simple. Costs are pennies per piece.
04-11-2002 06:30:36

New MessageRE:Printing a PC board Pt2 (modified 0 times) Miyu2002
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Have though of it and is on the list of thing to try. Work at a place around 1978 that used silk screen tech to make a lot of items including PC boards and front pannels for tranceivers.

There is a crafy place near by. May check to see if they have silkscreen stuff. Saw years ago in a Anime mag a small silkscreen kit.

04-11-2002 10:42:11

New MessageRE:Printing a PC board Pt2 (modified 0 times) philba
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I found this when shopping for parts for a temperature logger. It looks pretty easy to use but some what costy ($2.50/sheet). now if only the PC board sw was as easy....

http://www.allelectronics.com/pdf/printed.pdf

Phil

04-15-2002 14:49:35

New MessageRE:Printing a PC board Pt2 (modified 0 times) haiqu
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There's a much simpler way of making pcb's than the above.

Print with a bubblejet - even an old BJ10-SX works fine - onto mylar "tracing paper" (available at most newsagents) then tape it to precoated positive-resist pcb material and expose to UV. Dump it into a medium-weak solution of cheap caustic soda to remove the unwanted green stuff.

This works fine for 99% of projects. Most mylar is pre-printed with a light blue grid pattern, but the UV goes right through it.

Downside is that the precoated board is only available in a limited range of sizes, and not at all in double-sided to my knowledge.

haiqu

05-21-2002 17:56:31

New MessageRE:Printing a PC board Pt2 (modified 0 times) Miyu2002
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Been a bit busy and have not had a chance to try any ideas exxpressed here. Got to pay the bills! ;)

I have heard the special coated sheets work well and also making "film" also works. Just grabed a 600dpi laser printer for 129 new and plan on trying some ideas including using some glossy paper that will break down in water releasing the toner.

Tnks for all of the ideas! :)

05-21-2002 19:56:47

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