hello everyone,
hope you all having a good day,
i designed a PCB and took it to the manufacturer, he told me he can't make vias but he can make the holes for it, and he told me to connect the sides by wires or something, so my question : is there anyway of making vias like instead of normal wires connecting the top to the bottom ?
Hi,
No, you simply put pads/holes opposite each other like a via.
Then put a piece of wire through the hole and solder both sides.
Simple, how many PCBs have you had done will be done, change PCB manufacturer if its important.
Tom... 
TomGeorge:
Hi,
No, you simply put pads/holes opposite each other like a via.
Then put a piece of wire through the hole and solder both sides.Simple, how many PCBs have you had done will be done, change PCB manufacturer if its important.
Tom...
lol thanks for your reply
so this is it then the wire method, it's the second manufacturer, the first i tried he doesn't have a machine for printing he does it by etching, but this one has a machine except no vias,
by the way how are the vias done ? is it some sort of rivet like or something ?
You can get special little rivets that fit tightly in the holes - I can't remember the name, I
can't remember how expensive.
These days through-plated holes are not expensive to have made, but there is no easy way
to make them yourself. Have you looked at the various aggregating PCB manufacturers like
OSH Park?
MarkT:
You can get special little rivets that fit tightly in the holes - I can't remember the name, I
can't remember how expensive.These days through-plated holes are not expensive to have made, but there is no easy way
to make them yourself. Have you looked at the various aggregating PCB manufacturers like
OSH Park?
aha ok i am searching to see if its possible to make the vias myself
i can't go online for manufacturing, i had to look for a local one 
firashelou:
aha ok i am searching to see if its possible to make the vias myselfi can't go online for manufacturing, i had to look for a local one
Plated-through vias can only be made as part of the production of circuit boards using the "additive" process, not the "etching" process.
The additive process adds all the traces and vias by electro-plating the copper back onto the board. This is the only way to get the fine-pitch traces used today. Etching would undercut and destroy today's traces on circuit boards.
Google can help if you are interested.
Paul
Strip the insulation off 30AWG wire wrap wire.
Use this as the conductor between the two sides.
.
I've seen DIY through hole plating and I think using two pads and a wire would be easier. The through hole plating required a bunch of special chemicals and equipment and it looked like a lot of work.
A common technique when through hole plating isn't available is to make your vias occur where a resistor or other through hole component is placed on the board. You need to make sure you solder both the top and the bottom of the board when you do this.
There are lots of inexpensive fab houses which make great boards with through hole plating but you'll have to wait for shipping.
MarkT:
You can get special little rivets that fit tightly in the holes - I can't remember the name, I
can't remember how expensive.
These were discussed a while back on the Parallax forum.
Here's a link to instructions on using them.
Edit: I see LarryD beat me to it while I was waiting the 10 minute limit.
An alternative to the rivet method, uses a squeegee to force a conductive epoxy into the holes. When cured this makes the connection between the layers.
LarryD:
We only had rivets in the olden days:
Let me guess - you had to walk five miles to school in bare feet through parching heat and blizzards?
......"and up hill... BOTH ways!"
Let me guess - you had to walk five miles to school in bare feet through parching heat and blizzards?
......"and up hill... BOTH ways!"
Were you neighbours? ;D
Paul_KD7HB:
Plated-through vias can only be made as part of the production of circuit boards using the "additive" process, not the "etching" process.The additive process adds all the traces and vias by electro-plating the copper back onto the board. This is the only way to get the fine-pitch traces used today. Etching would undercut and destroy today's traces on circuit boards.
Google can help if you are interested.
Paul
thanks for the info, and good to know well seems that i was searching the wrong way but now you pointed it, the additive method,
at the end i had to go with etching process at a local shop because the cost are cheaper than making a CNC model with no silkscreen
so i decided to go with the etching half price
thanks everyone for your advices i am checking it one by one
i designed a PCB and took it to the manufacturer, he told me he can't make vias but he can make the holes for it, and he told me to connect the sides by wires or something,
I think you should find another manufacturer. Plated through holes/vias are very basic technology, and one of the major advantages of using a "manufacturer" instead of etching the board in your kitchen.
Plated-through vias can only be made as part of the production of circuit boards using the "additive" process, not the "etching" process.
The additive process adds all the traces and vias by electro-plating the copper back onto the board. This is the only way to get the fine-pitch traces used today. Etching would undercut and destroy today's traces on circuit boards.
That's not quite accurate. Most PCBs start with copper clad board, drill the holes, "activate" the holes, plate holes (incidentally increasing the copper thickness as well), add resist, and etch. Wikipedia seems to call this a "semi-additive" process, and implies that for very fine pitch you start with thinner copper, and only plate the traces/holes rather than the full surface. After all, you need something conductive and "attached" to do electroplating, and while there are conductive inks, they tend to be horribly expensive compared to copper.
There used to be several shops that had detailed info on the process steps they used, but I can't find one at the moment.
One of the interesting things I remember was that there's a process that uses the tin plating as the "etch resist" (with somewhat exotic etchants.) In that case, they drill, apply photoresist "negative", plate copper, plate tin, strip photoresist, and then etch.
(In any case, the exact details vary from one company to another, and probably vary significantly depending on just how fine your traces are, and how many boards you are making, and whether you're doing "quick-turn" or not. And nearly all the commercial processes are significantly different from what a hobbyist would do at home...)
This site goes thru the processes pretty well
And companies can do this quite efficiently too.
hello everyone,
i just received a phone call from the shop where i am manufacturing my board by etching, they said it has many default which won't work out, i am glad they did because there is many things i want to change, so my questions are :
1 - is it necessary to add pour to the board if i am using the Etching way ?
2 - if there is changed between the Top and Bottom what can i do other than the vias ?