Homebrew PCBs

This is a stupid question but I havent found the solution.  My supply 
of etchant comes in plastic bottles.  I want to preheat it before 
using.  No, noway am I using my microwave.  I have a heat gun and 
figure if I could find glass product such as pyrex that had a lid for 
storage I'd like to use it any suggestions?

Phil

I've heard of people using aquarium heaters.
TIME = TEMP_RISE * VOLUME * 4200 / POWER
Where: TIME is approximate time in seconds to heat. TEMP_RISE is 
  temperature increase in kelvin. POWER is heater wattage, VOLUME 
is solution liters.

You will only get a tired arm holding the heat gun and increase 
your electricity bill.

Adam.

Moore wrote:

> This is a stupid question but I havent found the solution.  My supply 
> of etchant comes in plastic bottles.  I want to preheat it before 
> using.  No, noway am I using my microwave.  I have a heat gun and 
> figure if I could find glass product such as pyrex that had a lid for 
> storage I'd like to use it any suggestions?
> 
> Phil
> 
> 
> 
> Be sure to visit the group home and check for new Bookmarks and files:
> http://groups.yahoo.com/group/Homebrew_PCBs
> 
> To unsubscribe from this group, send an email to:
> Homebrew_PCBs-unsubscribe@yahoogroups.com
> 
>  
> 
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ 
> 
>

Moore wrote:
> This is a stupid question but I havent found the solution.  My supply 
> of etchant comes in plastic bottles.  I want to preheat it before 
> using.  No, noway am I using my microwave.  I have a heat gun and 
> figure if I could find glass product such as pyrex that had a lid for 
> storage I'd like to use it any suggestions?

1 ounce double-sided pcb etches in 6-8mins room-temp in a bubble etcher.
Degrease the copper before using.

I'm curious as to how much Ferric are you trying to heat up (1 gal., 5 gal,
etc.), and from what temp (ambient) to what temp (target) are you going to?

 

What I would suggest is to find a submersible Teflon coated heater (I have
seen them in all shapes and sizes; one size I particularly liked is a flat,
square element that sits flat on the bottom of a container).  

  

Good luck.

Marty

-----Original Message-----
From: Moore [mailto:pminmo@...] 
Sent: Thursday, October 30, 2003 6:46 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: [Homebrew_PCBs] Ferric Chloride storage

 

This is a stupid question but I havent found the solution.  My supply 
of etchant comes in plastic bottles.  I want to preheat it before 
using.  No, noway am I using my microwave.  I have a heat gun and 
figure if I could find glass product such as pyrex that had a lid for 
storage I'd like to use it any suggestions?

Phil





Yahoo! Groups Sponsor



ADVERTISEMENT
 
<http://rd.yahoo.com/M=244522.3707890.4968055.1261774/D=egroupweb/S=17050832
91:HM/A=1595055/R=0/SIG=124j83ehr/*http:/ashnin.com/clk/muryutaitakenattogyo
?YH=3707890&yhad=1595055> Click Here!


 
<http://us.adserver.yahoo.com/l?M=244522.3707890.4968055.1261774/D=egroupmai
l/S=:HM/A=1595055/rand=441267963> 


Be sure to visit the group home and check for new Bookmarks and files:
http://groups.yahoo.com/group/Homebrew_PCBs

To unsubscribe from this group, send an email to:
Homebrew_PCBs-unsubscribe@yahoogroups.com



Your use of Yahoo! Groups is subject to the Yahoo!
<http://docs.yahoo.com/info/terms/>  Terms of Service. 



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

--- Moore <pminmo@...> wrote:
> This is a stupid question but I havent found the
> solution.  My supply 
> of etchant comes in plastic bottles.  I want to
> preheat it before 
> using.  No, noway am I using my microwave.

Go to Walmart and purchase the cheapest crockpot you
can find. I think I paid aound $ 12.00 for mine. While
your there, pick up a kitchen thermometer for about 
$3.00. They are good for measuring temp above the
boiling point of water. Just make sure the thermometer
you pick up is made of glass and has no metal parts.

Best regards


Marvin Dickens
Alpharetta, Georgia

=====
Registered Linux User No. 80253
If you use linux, get counted at: 
http://www.linuxcounter.org

__________________________________
Do you Yahoo!?
Exclusive Video Premiere - Britney Spears
http://launch.yahoo.com/promos/britneyspears/

will the containers hold up to a warm water bath?  ifyour goal is only
around 100 degrees F. i would guess the bottles would be rated for that, for
shipping and storage. (but don't rely on my guess)

can you find any markings molded into the plastic?  maybe on the bottom or
on the label that tells you which plastic they used.  one other good thing
about recycling is many containers are now marked.

once you know that, you can figure out if you can set the container into a
sink of warm (or maybe hot) water or not.

remember to allow for expansion.  and that the containers may not be as
rigid when warmed up.  don't want to grab it with the lid off and have it
more 'squeezable' so you get spillage.

consult the MSDS (material safety data sheet, probably on the supplier's web
site or the manufacturer's) for all the things i've forgotten to mention to
be careful of ... your results may vary, not responsible for loss of items,
enter at your own risk, not valid with any other offer, etc...etc... there,
have i covered my backside?
----- Original Message -----

From: "Moore" <pminmo@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Thursday, October 30, 2003 5:45 PM
Subject: [Homebrew_PCBs] Ferric Chloride storage


> This is a stupid question but I havent found the solution.  My supply
> of etchant comes in plastic bottles.  I want to preheat it before
> using.  No, noway am I using my microwave.  I have a heat gun and
> figure if I could find glass product such as pyrex that had a lid for
> storage I'd like to use it any suggestions?
>
> Phil
>
>
>
> Be sure to visit the group home and check for new Bookmarks and files:
> http://groups.yahoo.com/group/Homebrew_PCBs
>
> To unsubscribe from this group, send an email to:
> Homebrew_PCBs-unsubscribe@yahoogroups.com
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>

In a message dated 10/30/2003 5:49:43 PM Central Standard Time, 
pminmo@... writes:
No, noway am I using my microwave. 
Phil:  If you use a good Pyrex container, you CAN microwave it, but you gotta 
"know" how that works:  The stuff is VERY electrically-conductive.  Thus, the 
first few mm of it act as an EMI shield to the rest, so the ONLY part that 
gets hot is the "outer surface of the liquid in the container".  Thus, you gotta 
either stop and stir it every 15 seconds, or have a "liquid tumbler", if you 
can build such!  It is much faster to microwave it like this, even WITH all 
the start/stopping, than heating it over a stove-burner.  Just don't try to heat 
it in the microwave for a full minute, full-blast, as the surface and 
container in contact therewith will get VERY hot, while the rest remains cool for a 
moment.  Thus, if the container is not very good, it will melt if plastic, or 
bust if glass (not Pyrex type glass, anyway)!  

Be carerful!  This is NASTY stuff, and will turn ANYTHING it touches (except 
green FR-4, etc.) yellow!  Including fingers!

Jan Rowland


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

>From: "Moore" <pminmo@...>
>Reply-To: Homebrew_PCBs@yahoogroups.com
>To: Homebrew_PCBs@yahoogroups.com
>Subject: [Homebrew_PCBs] Ferric Chloride storage
>Date: Thu, 30 Oct 2003 23:45:44 -0000
>
>This is a stupid question but I havent found the solution.  My supply
>of etchant comes in plastic bottles.  I want to preheat it before
>using.  No, noway am I using my microwave.  I have a heat gun and
>figure if I could find glass product such as pyrex that had a lid for
>storage I'd like to use it any suggestions?

I do my etching in a plastic container inside a larger container into which 
I have poured some boiling water. I pour the used etchant back into a bottle 
when I have finished and re-use it until it is exhausted.

Leon
--
Leon Heller, G1HSM Tel: +44 1424 423947
Email: aqzf13 at dsl dot pipex dot com
WWW: http://www.geocities.com/leon_heller

_________________________________________________________________
Get Hotmail on your mobile phone http://www.msn.co.uk/msnmobile