Homebrew PCBs

I was just going to start with ferric chloride but after some more 
reading I found I can make my own etchant by mixing muriatic acid with 
hydrogen peroxide. Has anybody tried this or currently use this method 
and if so, how good does it work? I have a $10 coupon if I spend $25 at 
Lowes and can use it wisely on acetone and muriatic acid while I am there :)
Thanks,
Dave

----- Original Message ----- 

From: "Dave" <theschemer@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Saturday, November 24, 2007 8:00 PM
Subject: [Homebrew_PCBs] most popular etchant?


>I was just going to start with ferric chloride but after some more
> reading I found I can make my own etchant by mixing muriatic acid with
> hydrogen peroxide. Has anybody tried this or currently use this method
> and if so, how good does it work? I have a $10 coupon if I spend $25 at
> Lowes and can use it wisely on acetone and muriatic acid while I am there 
> :)

You might get asked some awkward questions - actetone, H2O2 and HCl are used 
to make triacetone triperoxide or TATP, the suicide bomber's favourite 
explosive. 8-)

Leon
--
Leon Heller
Amateur radio call-sign G1HSM
Yaesu FT-817ND and FT-857D transceivers
Suzuki SV1000S motorcycle
leon355@...
http://www.geocities.com/leon_heller

I have no problem whatsoever purchasing Muriatic acid from Lowes, Home 
Depot,
Ace Hardware, Safeway, Fry's, or any other super market. In southern 
Arizona (as in other venues)
Muriatic acid is an everyday household chemical used in swimming pools. 
The stuff is 20 Baume.
Usually sells for about 3 bucks a gallon in two-gallon cartons.

Hydrogen Peroxide is easily obtained from Walgreen's Osco, CVS, or any 
other drug emporium.
The domestic stuff is 3%. About 79 to 89 cents per quart.

You will not be "carded" when purchasing these materials in the USA.

Both concentrations are more than adequate to etch copper.

On the Continent and in the U.K. there might be some problems in 
obtaining these materials
if you are not a professional who requires them in the course of your work.
At least, that is what I have been told.

Have we not gone through this at least a hundred times previously??

Roland F. Harriston, P.D.
***************

Leon wrote:
>
>
> You might get asked some awkward questions - actetone, H2O2 and HCl 
> are used
> to make triacetone triperoxide or TATP, the suicide bomber's favourite
> explosive. 8-)
>
> Leon
> --
> Leon Heller
> Amateur radio call-sign G1HSM
> Yaesu FT-817ND and FT-857D transceivers
> Suzuki SV1000S motorcycle
> <mailto:leon355%40btinternet.com>
>



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

Leon wrote:
>
> ----- Original Message -----
> From: "Dave" <theschemer@... <mailto:theschemer%40cox.net>>
> To: <Homebrew_PCBs@yahoogroups.com 
> <mailto:Homebrew_PCBs%40yahoogroups.com>>
> Sent: Saturday, November 24, 2007 8:00 PM
> Subject: [Homebrew_PCBs] most popular etchant?
>
> >I was just going to start with ferric chloride but after some more
> > reading I found I can make my own etchant by mixing muriatic acid with
> > hydrogen peroxide. Has anybody tried this or currently use this method
> > and if so, how good does it work? I have a $10 coupon if I spend $25 at
> > Lowes and can use it wisely on acetone and muriatic acid while I am 
> there
> > :)
>
> You might get asked some awkward questions - actetone, H2O2 and HCl 
> are used
> to make triacetone triperoxide or TATP, the suicide bomber's favourite
> explosive. 8-)
>
> Leon
> --
> Leon Heller
> Amateur radio call-sign G1HSM
> Yaesu FT-817ND and FT-857D transceivers
> Suzuki SV1000S motorcycle
> leon355@... <mailto:leon355%40btinternet.com>
> http://www.geocities.com/leon_heller 
> <http://www.geocities.com/leon_heller>
>





















I picked up a 2-gallon pack as thats the only way they sell it. It was 
just under $10. Its commonly used in pools here in the US and I also 
used it to "etch" my floor in my workshop years ago before applying a 
stain and that was the manufacturers directions.
Thanks,
Dave

>
>
> _
> _,___

Roland F. Harriston wrote:
 >
 > I have no problem whatsoever purchasing Muriatic acid from Lowes, Home
 > Depot,
 > Ace Hardware, Safeway, Fry's, or any other super market. In southern
 > Arizona (as in other venues)
 > Muriatic acid is an everyday household chemical used in swimming pools.
 > The stuff is 20 Baume.
 > Usually sells for about 3 bucks a gallon in two-gallon cartons.
 >
 > Hydrogen Peroxide is easily obtained from Walgreen's Osco, CVS, or any
 > other drug emporium.
 > The domestic stuff is 3%. About 79 to 89 cents per quart.
 >
 > You will not be "carded" when purchasing these materials in the USA.
 >
 > Both concentrations are more than adequate to etch copper.
 >
 > On the Continent and in the U.K. there might be some problems in
 > obtaining these materials
 > if you are not a professional who requires them in the course of your 
work.
 > At least, that is what I have been told.
 >
 > Have we not gone through this at least a hundred times previously??
 >
 > Roland F. Harriston, P.D.
 > ***************




>
>
> I picked up the materials no problem, I just wanted to make sure it 
> worked for etching. Sounds like it does. I read misleading info on the 
> mix though. One place says 1 to 1 and another says 1 part Muriatic to 
> 2 parts Hydrogen Peroxide. Which is correct or best?
>






Thanks,
Dave
> _,_._,___

Dave:

I  have used both mixtures, and either one works just fine.
Since I never really "timed" the operation with either mix,
I can't say which is faster. Both are fast.
I only use this stuff outdoors.

Roland F. Harriston, P.D.
*******************
Dave wrote:

>
>
>
> Sounds like it does. I read misleading info on the
> > mix though. One place says 1 to 1 and another says 1 part Muriatic to
> > 2 parts Hydrogen Peroxide. Which is correct or best?
> >
>
> Thanks,
> Dave
>
>
>
>

Roland F. Harriston wrote:
 >
 > Dave:
 >
 > I have used both mixtures, and either one works just fine.
 > Since I never really "timed" the operation with either mix,
 > I can't say which is faster. Both are fast.
 > I only use this stuff outdoors.
 >
 > Roland F. Harriston, P.D.
 > *******************

Ok, Thanks for the info. I plan on using any etchant outside for safety 
and also don't want to corrode my steel building :)
Dave

>
>
>
>

----- Original Message ----- 

From: "Dave" <theschemer@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Sunday, November 25, 2007 2:34 PM
Subject: Re: [Homebrew_PCBs] most popular etchant?


>> I picked up the materials no problem, I just wanted to make sure it 
>> worked for etching. Sounds like it does. I read misleading info on the 
>> mix though. One place says 1 to 1 and another says 1 part Muriatic to 
>> 2 parts Hydrogen Peroxide. Which is correct or best?

It depends on the concentrations.

Leon
--
Leon Heller
Amateur radio call-sign G1HSM
Yaesu FT-817ND and FT-857D transceivers
Suzuki SV1000S motorcycle
leon355@...
http://www.geocities.com/leon_heller

"Roland F. Harriston" <rolohar@...> writes:
> I have no problem whatsoever purchasing Muriatic acid from Lowes,
> Home Depot, Ace Hardware, Safeway, Fry's, or any other super market.

Unfortunately for me, it seems that up here (NH) it's seasonal.
Nobody treats their pools or cleans concrete in the winter.  Still
looking, though.

DJ Delorie:

Seek out some stone masons or tilers in your area.
Or people who clean and paint concrete, like garage floors, etc.
I bet that they will turn you on to where they get
their Muriatic acid.

Roland F. Harriston, P.D.
***********************

DJ Delorie wrote:

>
> Unfortunately for me, it seems that up here (NH) it's seasonal.
> Nobody treats their pools or cleans concrete in the winter. Still
> looking, though.
>
>

Try Lowe's or Home Depot for Muriatic Acid. Used in washing bricks or
concrete floors.

Myc in MA

On Nov 25, 2007 2:05 PM, Roland F. Harriston <rolohar@...> wrote:
>
>
>
>
> DJ Delorie:
>
> Seek out some stone masons or tilers in your area.
> Or people who clean and paint concrete, like garage floors, etc.
> I bet that they will turn you on to where they get
> their Muriatic acid.
>
>
> Roland F. Harriston, P.D.
> ***********************
>
>
> DJ Delorie wrote:
> >
> > Unfortunately for me, it seems that up here (NH) it's seasonal.
> > Nobody treats their pools or cleans concrete in the winter. Still
> > looking, though.
> >
> >
>
>
>
>