Homebrew_PCBs

I really was trying to make a single side board into a two sided board.
Figured i would have to use epoxy of something to stick it down


[Non-text portions of this message have been removed]

Lex,

Presuming you already have single-sided material, and if you already have
the copper foil (and you have no other likely use for it), it might be
worth pursuing this idea. But if you have to buy the copper foil, it would
be much more cost effective to buy double-sided material instead. You'll
probably end up eventually using the single-sided stuff if that's what you
have now.

Now, if you already have an *etched* board, single sided and . . . . . . .
. Hey, actually, instead of me rattling off imagined possibilities of that
you're actually trying to do, maybe it would be best if you could fill us
in on the project you have in mind. That way, our ideas could be tailored
to your application. I have a few ideas now, but they may not apply to what
you're up to.

73,

Todd
------------------------------------------------------------------------------------
K7TFC / Medford, Oregon, USA / CN82ni / UTC-8
------------------------------------------------------------------------------------
QRP (CW & SSB) / EmComm / SOTA / Homebrew / Design

On Thu, Mar 21, 2013 at 5:13 AM, lex allen <lex_allen99@...> wrote:

> **
>
>
> I really was trying to make a single side board into a two sided board.
> Figured i would have to use epoxy of something to stick it down
>
> [Non-text portions of this message have been removed]
>
>
>


[Non-text portions of this message have been removed]

Todd:

I was not anything that super important. The thought of making PCB's on demand and trying to save some $$$ while doing so.
I few boards I used to buy and build are no longer being offered. The person who was suppling them has sold out and don't want to buy more. I fully understand his position, why spend 51 for 3 boards?

That was it. just maybe better to buy two sided and just go with it.

Lex,

Maybe you want to consider buying your pcb material at eBay. That's where
I've gotten mine. There are sellers for just bare board stock as well as
presensitized. Here's the seller I've dealt with: abcfab (
http://myworld.ebay.com/abcfab/&_trksid=p3984.m1439.l2754). Domestic
USA. 99.9% rating. Very fast shipment. I don't know him or anything, but I
like to hear about good sellers myself.

I've given passing thought that if I wanted to retrofit a single-sided
board with a ground plane that I could use adhesive-backed copper-foil
tape. Some is made explicitly to be conducting (for EMI shielding, etc.).
Some might be found at craft stores, especially ones that carry
stained-glass supplies. Care would be needed with this source that the
material is 1) really copper, and 2) it doesn't have a non-conductive
coating, though if there's real copper underneath some of the coating could
be sanded off so connections can be made. I think it could be directly
solderable, though since it would have a sticky back soldering would need
to be fast. It fast enough anyway. Besides, it wouldn't matter if the
adhesive got warm. It'll cool off. I guess one could also use screws and
lugs to make connections, again mindful of any coating.

In addition to pcb uses, I'm going to try using the foil tape to shield the
inside of a plastic enclosure, jumpering between the pieces. Wouldn't have
to be copper. Could be aluminum, tin, etc.

73,

Todd
------------------------------------------------------------------------------------
K7TFC / Medford, Oregon, USA / CN82ni / UTC-8
------------------------------------------------------------------------------------
QRP (CW & SSB) / EmComm / SOTA / Homebrew / Design

On Fri, Mar 22, 2013 at 5:38 AM, lex <lex_allen99@...> wrote:

> **
>
>
> Todd:
>
> I was not anything that super important. The thought of making PCB's on
> demand and trying to save some $$$ while doing so.
> I few boards I used to buy and build are no longer being offered. The
> person who was suppling them has sold out and don't want to buy more. I
> fully understand his position, why spend 51 for 3 boards?
>
> That was it. just maybe better to buy two sided and just go with it.
>
>
>


[Non-text portions of this message have been removed]

>In addition to pcb uses, I'm going to try using the foil tape to shield

the
inside of a plastic enclosure, jumpering between the pieces. Wouldn't
have
to be copper. Could be aluminum, tin, etc.

I read somewhere that auto ignition distributor caps (plastic)
can be coated with metal....check QST archives RE mobile
radio and see what comes up.

73,
Charlie, N0TT

[Non-text portions of this message have been removed]

Stewart MacDonald sells various widths of copper tape intended for shielding the insides of electric guitars -- it intended to be soldered. I've used it for that purpose and it works well.

Sent from my iPhone

On Mar 22, 2013, at 3:38 PM, "Todd F. Carney / K7TFC" <k7tfc@...> wrote:

> Lex,
>
> Maybe you want to consider buying your pcb material at eBay. That's where
> I've gotten mine. There are sellers for just bare board stock as well as
> presensitized. Here's the seller I've dealt with: abcfab (
> http://myworld.ebay.com/abcfab/&_trksid=p3984.m1439.l2754). Domestic
> USA. 99.9% rating. Very fast shipment. I don't know him or anything, but I
> like to hear about good sellers myself.
>
> I've given passing thought that if I wanted to retrofit a single-sided
> board with a ground plane that I could use adhesive-backed copper-foil
> tape. Some is made explicitly to be conducting (for EMI shielding, etc.).
> Some might be found at craft stores, especially ones that carry
> stained-glass supplies. Care would be needed with this source that the
> material is 1) really copper, and 2) it doesn't have a non-conductive
> coating, though if there's real copper underneath some of the coating could
> be sanded off so connections can be made. I think it could be directly
> solderable, though since it would have a sticky back soldering would need
> to be fast. It fast enough anyway. Besides, it wouldn't matter if the
> adhesive got warm. It'll cool off. I guess one could also use screws and
> lugs to make connections, again mindful of any coating.
>
> In addition to pcb uses, I'm going to try using the foil tape to shield the
> inside of a plastic enclosure, jumpering between the pieces. Wouldn't have
> to be copper. Could be aluminum, tin, etc.
>
> 73,
>
> Todd
> ------------------------------------------------------------------------------------
> K7TFC / Medford, Oregon, USA / CN82ni / UTC-8
> ------------------------------------------------------------------------------------
> QRP (CW & SSB) / EmComm / SOTA / Homebrew / Design
>
>
> On Fri, Mar 22, 2013 at 5:38 AM, lex <lex_allen99@...> wrote:
>
>> **
>>
>>
>> Todd:
>>
>> I was not anything that super important. The thought of making PCB's on
>> demand and trying to save some $$$ while doing so.
>> I few boards I used to buy and build are no longer being offered. The
>> person who was suppling them has sold out and don't want to buy more. I
>> fully understand his position, why spend 51 for 3 boards?
>>
>> That was it. just maybe better to buy two sided and just go with it.
>>
>>
>>
>
>
> [Non-text portions of this message have been removed]
>
>
>
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