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I'll agree.? Other than what's mentioned, I've done two layer boards at home. Problems are: 1) you can't do vias under chips unless the chips are DIL. 2) the vias have to be fairly large for you

From a pro, If its only 2 layers and you insist on real through hole, it's most time and cost effective to just have them made at an online boardhouse( dirt cheap). Otherwise the threading a long

@ Bertho: That's an very interesting note. Thanks for sharing that. I wonder if the slit also broke some sort of surface tension at play to help the solder get where it needed to go.

Just a comment about eyelets, not at all suggesting to use them: Many, many decades ago I worked at Motorola when eyelets were used. The original style, and common today, is a tube with the top edge

Received from Terry Gray at 6/13/2020 00:17 UTC: Perhaps I'm wrong, but I bet you found places that list a price for it, and seem to indicate it's available, but the real hassle will come when you

Here's another method for making conductive thru holes: < https://pcbfx.com/main_site/pages/tech_support/plated_thru_holes.html > A Google search turns up many other methods, some of them may

I think that are difficult to understand all the content of the site, but I want put focus in this process that doesn't use calcium hypophosphite: Ativa??o Com Prata e Metaliza??o Com Cobre

Jim, Sodium Hypophosphite Monohydrate is apparently a controlled substance but for whatever reason it seems to be much easier and far cheaper to obtain than its cousin Calcium Hypophosphite, and I

Eyelets + solder paste + reflow oven?Sent from my T-Mobile 5G Device

And again, not looking for a mechanical solution.? Already tried eyelets...they suck for so many reasons, the foremost being inconsistency of connection. Already tried soldered wires...this also

I did have an idea, which may or may not work: It's not a replacement for plated through holes, but may address the same problem. I was working on a strictly mechanical basis, which meant eyelets or

Received from Matheus Costa via groups.io at 6/12/2020 15:16 UTC: The method at this site starts with Sodium Hypophosphite, which is as much a controlled substance as Calcium Hypophosphite. Jim H

Thanks everyone for your replies and sugestions. Thanks, Matheus!? While not exactly what I was hoping for, this is a reasonable solution.? I will give a shot at trying to "make" calcium

There are another method that don't use calcium hypophosphite. It's in this site (in portuguese, but google translate can be effective to get the

You know what? You asked a question and I answered on point... and then amplified separately in hopes of helping. You are no worse off now than you were when you started, but now you act like I'm a

An electroplating shop might be cool and give you a small amount.

There are several sources for eyelets so if I wanted to use them they are available.

There is an Instructable on this very subject. I have had no luck with the conductive ink or paint method, never getting close to 95%, which is why I am inquiring about the chemical method. If I

Thanks for your suggestions but did you read where? I am specifically asking about "through-hole activation" and not for alternatives?? I have used eyelets but really don't like them due to a too

One might also check out the jewelry sellers on "etsy.com"....I purchased some VERY tiny brass rivets on a site (sorry, no link...Google) and they also had eyelets. Charlie On Thu, 11 Jun 2020