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My materials for "Cold Process?"

My materials for "Cold Process?"

2016-01-18 by Kirk Kleinschmidt

Hi, gang,
I'm going to pick up some glossy printer paper this afternoon (it's ONLY -10F today!), and I'm wondering whether my initial materials are a good fit for the process.
From Sally Beauty Supply I previously bought a quart of pure acetone. Should be good.
From the "real" pharmacy I have a couple bottles of "99% isopropyl" alcohol. Should be good, right? Or does it need to be "ethyl" or some other variety of alcohol?
I have four laser printers on hand, from old to new, so I should be able to find the "right" toner...
Thanks, as always,
--Kirk, NT0Z  Rochester, MN
  My book, "Stealth Amateur Radio," is now available from www.stealthamateur.com and on the Amazon Kindle (soon)

RE: [Homebrew_PCBs] My materials for "Cold Process?"

2016-01-18 by Boman33

Stay warm Kirk!

Hopefully you will do the testing at normal room temperature :)

Bertho
Show quoted textHide quoted text
From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] 
Sent: Monday, January 18, 2016 14:24
To: yahoogroups <homebrew_pcbs@yahoogroups.com>
Subject: [Homebrew_PCBs] My materials for "Cold Process?"

 

  

Hi, gang,

 

I'm going to pick up some glossy printer paper this afternoon (it's ONLY -10F today!), and I'm wondering whether my initial materials are a good fit for the process.

 

From Sally Beauty Supply I previously bought a quart of pure acetone. Should be good.

 

From the "real" pharmacy I have a couple bottles of "99% isopropyl" alcohol. Should be good, right? Or does it need to be "ethyl" or some other variety of alcohol?

 

I have four laser printers on hand, from old to new, so I should be able to find the "right" toner...

 

Thanks, as always,

 

--Kirk, NT0Z

  Rochester, MN

 

My book, "Stealth Amateur Radio," is now available from www.stealthamateur.com <http://www.stealthamateur.com>  and on the Amazon Kindle (soon)

Re: [Homebrew_PCBs] My materials for "Cold Process?"

2016-01-18 by rolohar@...

Boman33: 

I just walked in from my shop where I just completed another perfect cold toner transfer using 
a 2 to 1 ratio of "Top Care iso alcohol 70% to "Equate" nail polish remover, 100% acetone, 
from my local Walgreen's emporium. 

The PC laser image is on Office One "Business Gloss" 32lb. 92 brilliance (indication of glossy surface) paper. 
This paper is made by HammerMill Paper Co. 

Next, I will try Office Max "High Gloss" photo paper, which is thicker and much glossier 
than the above, but much more expensive. This stuff works quite well with "Hot Transfer" 
technique. 

Regards, 

Roland F. Harriston, P.D. 
**************************** 
----- Original Message -----

RE: [Homebrew_PCBs] My materials for "Cold Process?"

2016-01-18 by John Snyder

Roland


 


Thanks for the specific information. 


Can you also tell us the printer and if it has oem toner or not


And an idea of the line width  and spacing size?


 


John 


 


  _____
Show quoted textHide quoted text
From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] 
Sent: Monday, January 18, 2016 2:37 PM
To: Homebrew PCBs
Subject: Re: [Homebrew_PCBs] My materials for "Cold Process?"


 












Boman33:


 


I just walked in from my shop where I just completed another perfect cold
toner transfer using


a 2 to 1 ratio of "Top Care iso alcohol 70% to "Equate" nail polish remover,
100% acetone,


from my local Walgreen's emporium.


 


The PC laser image is on  Office One "Business Gloss" 32lb. 92 brilliance
(indication of glossy surface) paper.


This paper is  made by HammerMill Paper Co.


 


Next, I will try Office Max "High Gloss" photo paper, which is thicker and
much glossier


than the above, but much more expensive.  This stuff works quite well with
"Hot Transfer"


technique.


 


Regards,


 


Roland F. Harriston, P.D.


****************************


  _____

Re: [Homebrew_PCBs] My materials for "Cold Process?"

2016-01-19 by Mark Lerman


Sorry if I missed it, but what printer/toner are you using? Can you reliably do traces of 10 mil or less?

Mark


At 05:36 PM 1/18/2016, you wrote:
Show quoted textHide quoted text
Boman33:

I just walked in from my shop where I just completed another perfect cold toner transfer using
a 2 to 1 ratio of "Top Care iso alcohol 70% to "Equate" nail polish remover, 100% acetone,
from my local Walgreen's emporium.

The PC laser image is on Office One "Business Gloss" 32lb. 92 brilliance (indication of glossy surface) paper.
This paper is made by HammerMill Paper Co.

Next, I will try Office Max "High Gloss" photo paper, which is thicker and much glossier
than the above, but much more expensive. This stuff works quite well with "Hot Transfer"
technique.

Regards,

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



Re: [Homebrew_PCBs] My materials for "Cold Process?"

2016-01-19 by rolohar@...

Mark: 

I don"t own a laser printer. 

My laser copies are made by a local Quick Print shop. 

I have used them for several years for laser copies for my hot transfer work. 

I don't even know what kind of machines they use. 
But evidently, they have used the same type of toner for as long as I have used them 
to make copies for me 

I always supply them with the paper I want to use. 

Regards, 

Roland F. Harriston, P.D. 
***************************
Show quoted textHide quoted text
----- Original Message -----

From: "Mark Lerman mlerman@....com [Homebrew_PCBs]" <Homebrew_PCBs@yahoogroups.com> 
To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com> 
Sent: Tuesday, January 19, 2016 7:33:30 AM 
Subject: Re: [Homebrew_PCBs] My materials for "Cold Process?" 




Sorry if I missed it, but what printer/toner are you using? Can you reliably do traces of 10 mil or less? 



Mark 




At 05:36 PM 1/18/2016, you wrote: 



Boman33: 

I just walked in from my shop where I just completed another perfect cold toner transfer using 
a 2 to 1 ratio of "Top Care iso alcohol 70% to "Equate" nail polish remover, 100% acetone, 
from my local Walgreen's emporium. 

The PC laser image is on Office One "Business Gloss" 32lb. 92 brilliance (indication of glossy surface) paper. 
This paper is made by HammerMill Paper Co. 

Next, I will try Office Max "High Gloss" photo paper, which is thicker and much glossier 
than the above, but much more expensive. This stuff works quite well with "Hot Transfer" 
technique. 

Regards, 

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

Re: [Homebrew_PCBs] My materials for "Cold Process?"

2016-01-19 by Donald H Locker

Sally Beauty Supply is (at least was, last I checked) a good source for Hydrogen Peroxide (H2O2) in greater concentrations than the drugstore 3%.

Donald.

----- Original Message -----
Show quoted textHide quoted text
> From: "Kirk Kleinschmidt kirk@cloudnet.com [Homebrew_PCBs]" <Homebrew_PCBs@yahoogroups.com>
> To: "yahoogroups" <homebrew_pcbs@yahoogroups.com>
> Sent: Monday, January 18, 2016 2:23:46 PM
> Subject: [Homebrew_PCBs] My materials for "Cold Process?"
> 
> Hi, gang,
> I'm going to pick up some glossy printer paper this afternoon (it's ONLY -10F
> today!), and I'm wondering whether my initial materials are a good fit for
> the process.
> From Sally Beauty Supply I previously bought a quart of pure acetone. Should
> be good.
> From the "real" pharmacy I have a couple bottles of "99% isopropyl" alcohol.
> Should be good, right? Or does it need to be "ethyl" or some other variety
> of alcohol?
> I have four laser printers on hand, from old to new, so I should be able to
> find the "right" toner...
> Thanks, as always,
> --Kirk, NT0Z  Rochester, MN
>   My book, "Stealth Amateur Radio," is now available from
>   www.stealthamateur.com and on the Amazon Kindle (soon)

Re: [Homebrew_PCBs] My materials for "Cold Process?"

2016-01-19 by rolohar@...

Donald:

Thanks for the "Sally Beauty Supply" product.
I never thought about the stuff they use to create "beautiful blonds"

Regards,


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


Sally Beauty Supply is (at least was, last I checked) a good source for Hydrogen Peroxide (H2O2) in greater concentrations than the drugstore 3%.

Donald.

-

Re: [Homebrew_PCBs] My materials for "Cold Process?"

2016-01-19 by Kirk Kleinschmidt

At Sally Beauty they call their strongest hydrogen peroxide "Salon Care Maximum Lift 40 Volume Clear Developer."
FYI, "40 volume" = a 12% hydrogen peroxide solution.

It seems to be on sale now for $1.50 a quart = good deal :)
--Kirk, NT0Z My book, "Stealth Amateur Radio," is now available from
www.stealthamateur.com and on the Amazon Kindle (soon) 

    On Tuesday, January 19, 2016 3:46 PM, "'John Snyder' Kochcal@... [Homebrew_PCBs]" <Homebrew_PCBs@yahoogroups.com> wrote:
 
 

     Roland    Thanks for the specific information.  Can you also tell us the printer and if ithas oem toner or not And an idea of the line width  and spacingsize?    John     From:Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] 
Sent: Monday, January 18, 20162:37 PM
To: Homebrew PCBs
Subject: Re: [Homebrew_PCBs] Mymaterials for "Cold Process?"    


 Boman33:    I just walked in from my shop where Ijust completed another perfect cold toner transfer using a 2 to 1 ratio of "Top Care isoalcohol 70% to "Equate" nail polish remover, 100% acetone, from my local Walgreen's emporium.    The PC laser image is on  Office One"Business Gloss" 32lb. 92 brilliance (indication of glossy surface)paper. This paper is  made by HammerMillPaper Co.    Next, I will try Office Max "HighGloss" photo paper, which is thicker and much glossier than the above, but much moreexpensive.  This stuff works quite well with "Hot Transfer" technique.    Regards,    Roland F. Harriston, P.D. ****************************

Re: [Homebrew_PCBs] My materials for "Cold Process?"

2016-01-19 by rolohar@...

Kirk, NT0Z 
Thanks for the information. 

There is a "Sally" located about 5 miles from my home. 
Never noticed it before. 

Roland F. Harriston, P.D. 
**************************
Show quoted textHide quoted text
----- Original Message -----

From: "Kirk Kleinschmidt kirk@... [Homebrew_PCBs]" <Homebrew_PCBs@...m> 
To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com> 
Sent: Tuesday, January 19, 2016 3:00:13 PM 
Subject: Re: [Homebrew_PCBs] My materials for "Cold Process?" 




At Sally Beauty they call their strongest hydrogen peroxide "Salon Care Maximum Lift 40 Volume Clear Developer." 

FYI, "40 volume" = a 12% hydrogen peroxide solution. 

It seems to be on sale now for $1.50 a quart = good deal :) 

--Kirk, NT0Z 
My book, "Stealth Amateur Radio," is now available from 
www.stealthamateur.com and on the Amazon Kindle (soon) 


On Tuesday, January 19, 2016 3:46 PM, "'John Snyder' Kochcal@earthlink.net [Homebrew_PCBs]" <Homebrew_PCBs@yahoogroups.com> wrote: 





Roland 
Thanks for the specific information. 
Can you also tell us the printer and if it has oem toner or not 
And an idea of the line width and spacing size? 
John 

From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] 
Sent: Monday, January 18, 2016 2:37 PM 
To: Homebrew PCBs 
Subject: Re: [Homebrew_PCBs] My materials for "Cold Process?" 



Boman33: 
I just walked in from my shop where I just completed another perfect cold toner transfer using 
a 2 to 1 ratio of "Top Care iso alcohol 70% to "Equate" nail polish remover, 100% acetone, 
from my local Walgreen's emporium. 
The PC laser image is on Office One "Business Gloss" 32lb. 92 brilliance (indication of glossy surface) paper. 
This paper is made by HammerMill Paper Co. 
Next, I will try Office Max "High Gloss" photo paper, which is thicker and much glossier 
than the above, but much more expensive. This stuff works quite well with "Hot Transfer" 
technique. 
Regards, 
Roland F. Harriston, P.D. 
****************************

RE: [Homebrew_PCBs] My materials for "Cold Process?"

2016-01-19 by K5ESS

What ratio of the 12% hydrogen peroxide to acid do you use?  How long does a typical etch of one ounce copper take?  And how often do you have to “rejuvenate” it?

Thanks,

Mike K5ESS
Show quoted textHide quoted text
From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] 
Sent: Tuesday, January 19, 2016 4:00 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: Re: [Homebrew_PCBs] My materials for "Cold Process?"

 

  

At Sally Beauty they call their strongest hydrogen peroxide "Salon Care Maximum Lift 40 Volume Clear Developer."

 

FYI, "40 volume" = a 12% hydrogen peroxide solution.

 

It seems to be on sale now for $1.50 a quart = good deal :)

 

--Kirk, NT0Z

 

My book, "Stealth Amateur Radio," is now available from
www.stealthamateur.com and on the Amazon Kindle (soon)

 

On Tuesday, January 19, 2016 3:46 PM, "'John Snyder' Kochcal@... [Homebrew_PCBs]" <Homebrew_PCBs@yahoogroups.com> wrote:

 

  

Roland

 

Thanks for the specific information. 

Can you also tell us the printer and if it has oem toner or not

And an idea of the line width  and spacing size?

 

John 

 


  _____  


From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] 
Sent: Monday, January 18, 2016 2:37 PM
To: Homebrew PCBs
Subject: Re: [Homebrew_PCBs] My materials for "Cold Process?"

 





Boman33:

 

I just walked in from my shop where I just completed another perfect cold toner transfer using

a 2 to 1 ratio of "Top Care iso alcohol 70% to "Equate" nail polish remover, 100% acetone,

from my local Walgreen's emporium.

 

The PC laser image is on  Office One "Business Gloss" 32lb. 92 brilliance (indication of glossy surface) paper.

This paper is  made by HammerMill Paper Co.

 

Next, I will try Office Max "High Gloss" photo paper, which is thicker and much glossier

than the above, but much more expensive.  This stuff works quite well with "Hot Transfer"

technique.

 

Regards,

 

Roland F. Harriston, P.D.

****************************


  _____

Re: [Homebrew_PCBs] My materials for "Cold Process?"

2016-01-19 by Kirk Kleinschmidt

Mike,
I haven't started using it yet, but others on the list have. Perhaps someone will chime in?
--Kirk, NT0Z
 My book, "Stealth Amateur Radio," is now available from www.stealthamateur.com and on the Amazon Kindle (soon) 

    On Tuesday, January 19, 2016 5:22 PM, "'K5ESS' k5ess.nothdurft@verizon.net [Homebrew_PCBs]" <Homebrew_PCBs@yahoogroups.com> wrote:
 
 

     What ratio of the 12% hydrogen peroxide to acid do you use?  How long does a typical etch of one ounce copper take?  And how often do you have to “rejuvenate” it?Thanks,Mike K5ESS  From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
Show quoted textHide quoted text
Sent: Tuesday, January 19, 2016 4:00 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: Re: [Homebrew_PCBs] My materials for "Cold Process?"    At Sally Beauty they call their strongest hydrogen peroxide "Salon Care Maximum Lift 40 Volume Clear Developer."  FYI, "40 volume" = a 12% hydrogen peroxide solution.  It seems to be on sale now for $1.50 a quart = good deal :)  --Kirk, NT0Z My book, "Stealth Amateur Radio," is now available from
www.stealthamateur.com and on the Amazon Kindle (soon)  On Tuesday, January 19, 2016 3:46 PM, "'John Snyder' Kochcal@earthlink.net [Homebrew_PCBs]" <Homebrew_PCBs@yahoogroups.com> wrote:
    Roland Thanks for the specific information. Can you also tell us the printer and if it has oem toner or notAnd an idea of the line width  and spacing size? John  From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] 
Sent: Monday, January 18, 2016 2:37 PM
To: Homebrew PCBs
Subject: Re: [Homebrew_PCBs] My materials for "Cold Process?" 

Boman33: I just walked in from my shop where I just completed another perfect cold toner transfer usinga 2 to 1 ratio of "Top Care iso alcohol 70% to "Equate" nail polish remover, 100% acetone,from my local Walgreen's emporium. The PC laser image is on  Office One "Business Gloss" 32lb. 92 brilliance (indication of glossy surface) paper.This paper is  made by HammerMill Paper Co. Next, I will try Office Max "High Gloss" photo paper, which is thicker and much glossierthan the above, but much more expensive.  This stuff works quite well with "Hot Transfer"technique. Regards, Roland F. Harriston, P.D.****************************

Re: [Homebrew_PCBs] My materials for "Cold Process?"

2016-01-20 by Bob Butcher

Another source for many of the chemicals is Home Depot, in the paint section. I know you can get acetone, xylene, denatured alcohol, and such there. They usually carry muriatic (Hydrochloric) acid for swimming pool use. I have heard that Safeway carries 99% Isopropanol alcohol in the cleaning section, or you can make your own 99% from 70% very simply by "Salting Out". A Google search for salting out alcohol will give the details, but basically you add lots of salt to remove the water and skim off the alcohol from the top. This does not work for any other type of alcohol however. Methyl Alcohol (Methanol) can probably be found at Home Depot (use with caution, ingesting it will cause blindness). If you need high purity Ethyl alcohol (Ethanol) some states sell it in the liquor stores in Everclear brand (look for 190 proof, 95% alcohol). 200 proof Ethanol is available, but not easy to find since it uses hazardous chemicals to remove the last bit of water and is not meant to be consumed.

Bob

RE: [Homebrew_PCBs] My materials for "Cold Process?"

2016-01-20 by Mark Lerman


I've used 12% peroxide. Be very careful using it and do it in a well ventilated area, preferably outside. The reaction is very exothermic and etching can be complete in < 1 minute. I finally went back to the 3%, often using a sponge to hasten and make the etch more even.

Mark

At 06:13 PM 1/19/2016, you wrote:


What ratio of the 12% hydrogen peroxide to acid do you use? How long does a typical etch of one ounce copper take? And how often do you have to “rejuvenate” it?
Thanks,
Mike K5ESS

Show quoted textHide quoted text
From: Homebrew_PCBs@yahoogroups.com [ mailto:Homebrew_PCBs@yahoogroups.com]
Sent: Tuesday, January 19, 2016 4:00 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: Re: [Homebrew_PCBs] My materials for "Cold Process?"


At Sally Beauty they call their strongest hydrogen peroxide "Salon Care Maximum Lift 40 Volume Clear Developer."

FYI, "40 volume" = a 12% hydrogen peroxide solution.

It seems to be on sale now for $1.50 a quart = good deal :)

--Kirk, NT0Z

My book, "Stealth Amateur Radio," is now available from
www.stealthamateur.com and on the Amazon Kindle (soon)

On Tuesday, January 19, 2016 3:46 PM, "'John Snyder' Kochcal@... [Homebrew_PCBs]" < Homebrew_PCBs@yahoogroups.com> wrote:


Roland

Thanks for the specific information.
Can you also tell us the printer and if it has oem toner or not
And an idea of the line width and spacing size?

John

From: Homebrew_PCBs@yahoogroups.com [ mailto:Homebrew_PCBs@yahoogroups.com]
Sent: Monday, January 18, 2016 2:37 PM
To: Homebrew PCBs
Subject: Re: [Homebrew_PCBs] My materials for "Cold Process?"



Boman33:

I just walked in from my shop where I just completed another perfect cold toner transfer using
a 2 to 1 ratio of "Top Care iso alcohol 70% to "Equate" nail polish remover, 100% acetone,
from my local Walgreen's emporium.

The PC laser image is on Office One "Business Gloss" 32lb. 92 brilliance (indication of glossy surface) paper.
This paper is made by HammerMill Paper Co.

Next, I will try Office Max "High Gloss" photo paper, which is thicker and much glossier
than the above, but much more expensive. This stuff works quite well with "Hot Transfer"
technique.

Regards,

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






Re: [Homebrew_PCBs] My materials for "Cold Process?"

2016-01-20 by Kirk Kleinschmidt

Thanks for the heads-up. My etching will be done in an open-doored garage. At -18F, a little exothermic etchant might be just what the doctor ordered!  :)
Know what else is exothermic?
300,000 gallons of five-year-old liquid hog manure in three giant under-barn pits...  Guess I won't be making an offer on that farmstead!
73 for now,
--Kirk, NT0Z
 My book, "Stealth Amateur Radio," is now available from www.stealthamateur.com and on the Amazon Kindle (soon) 

    On Wednesday, January 20, 2016 6:49 AM, "Mark Lerman mlerman@... [Homebrew_PCBs]" <Homebrew_PCBs@yahoogroups.com> wrote:
 
 

     
I've used 12% peroxide. Be very careful using it and do it in a wellventilated area, preferably outside. The reaction is very exothermic andetching can be complete in < 1 minute. I finally went back to the 3%,often using a sponge to hasten and make the etch more even.

Mark

At 06:13 PM 1/19/2016, you wrote:



What ratio of the 12% hydrogenperoxide to acid do you use?  How long does a typical etch of oneounce copper take?  And how often do you have to “rejuvenateâ€it?
Thanks,
Mike K5ESS
Show quoted textHide quoted text
From: Homebrew_PCBs@yahoogroups.com[mailto:Homebrew_PCBs@yahoogroups.com] 
Sent: Tuesday, January 19, 2016 4:00 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: Re: [Homebrew_PCBs] My materials for "ColdProcess?"
 
  
At Sally Beauty they call their strongest hydrogen peroxide "SalonCare Maximum Lift 40 Volume Clear Developer."
 
FYI, "40 volume" = a 12% hydrogen peroxide solution.
 
It seems to be on sale now for $1.50 a quart = good deal :)
 
--Kirk, NT0Z
 
My book, "Stealth Amateur Radio," is now available from
www.stealthamateur.com and onthe Amazon Kindle (soon)
 
On Tuesday, January 19, 2016 3:46 PM, "'John Snyder'Kochcal@...[Homebrew_PCBs]"<Homebrew_PCBs@yahoogroups.com> wrote:
   
      -     

      -      

      - Roland   

      -     

      - Thanks for the specific information.    

      - Can you also tell us the printer and if it has oem toner or not   

      - And an idea of the line width  and spacing size?   

      -     

      - John    

      -     

      - From:Homebrew_PCBs@yahoogroups.com[mailto:Homebrew_PCBs@yahoogroups.com]    

      - Sent: Monday, January 18, 2016 2:37 PM   

      - To: Homebrew PCBs   

      - Subject: Re: [Homebrew_PCBs] My materials for "ColdProcess?"   

      -     
   
   

      - Boman33:   

      -     

      - I just walked in from my shop where I just completed another perfectcold toner transfer using   

      - a 2 to 1 ratio of "Top Care iso alcohol 70% to"Equate" nail polish remover, 100% acetone,   

      - from my local Walgreen's emporium.   

      -     

      - The PC laser image is on  Office One "Business Gloss"32lb. 92 brilliance (indication of glossy surface) paper.   

      - This paper is  made by HammerMill Paper Co.   

      -     

      - Next, I will try Office Max "High Gloss" photo paper, whichis thicker and much glossier   

      - than the above, but much more expensive.  This stuff works quitewell with "Hot Transfer"   

      - technique.   

      -     

      - Regards,   

      -     

      - Roland F. Harriston, P.D.   

      - ****************************   

      -     

      -     

      -

RE: [Homebrew_PCBs] My materials for "Cold Process?"

2016-01-20 by Mark Lerman


It also produces lots of gas which isn't at all good for your lungs.


At 07:49 AM 1/20/2016, you wrote:
Show quoted textHide quoted text
I've used 12% peroxide. Be very careful using it and do it in a well ventilated area, preferably outside. The reaction is very exothermic and etching can be complete in < 1 minute. I finally went back to the 3%, often using a sponge to hasten and make the etch more even.

Mark

At 06:13 PM 1/19/2016, you wrote:


What ratio of the 12% hydrogen peroxide to acid do you use? How long does a typical etch of one ounce copper take? And how often do you have to “rejuvenate” it?
Thanks,
Mike K5ESS

From: Homebrew_PCBs@yahoogroups.com [ mailto:Homebrew_PCBs@...m]
Sent: Tuesday, January 19, 2016 4:00 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: Re: [Homebrew_PCBs] My materials for "Cold Process?"


At Sally Beauty they call their strongest hydrogen peroxide "Salon Care Maximum Lift 40 Volume Clear Developer."

FYI, "40 volume" = a 12% hydrogen peroxide solution.

It seems to be on sale now for $1.50 a quart = good deal :)

--Kirk, NT0Z

My book, "Stealth Amateur Radio," is now available from
www.stealthamateur.com and on the Amazon Kindle (soon)

On Tuesday, January 19, 2016 3:46 PM, "'John Snyder' Kochcal@... [Homebrew_PCBs]" < Homebrew_PCBs@yahoogroups.com> wrote: Roland Thanks for the specific information. Can you also tell us the printer and if it has oem toner or not And an idea of the line width and spacing size? John From: Homebrew_PCBs@yahoogroups.com [ mailto:Homebrew_PCBs@yahoogroups.com] Sent: Monday, January 18, 2016 2:37 PM To: Homebrew PCBs Subject: Re: [Homebrew_PCBs] My materials for "Cold Process?"

Boman33: I just walked in from my shop where I just completed another perfect cold toner transfer using a 2 to 1 ratio of "Top Care iso alcohol 70% to "Equate" nail polish remover, 100% acetone, from my local Walgreen's emporium. ; The PC laser image is on Office One "Business Gloss" 32lb. 92 brilliance (indication of glossy surface) paper. This paper is made by HammerMill Paper Co. Next, I will try Office Max "High Gloss" photo paper, which is thicker and much glossier than the above, but much more expensive. This stuff works quite well with "Hot Transfer" technique. Regards, Roland F. Harriston, P.D. ****************************




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