Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Different methods for PCB etching

Status
Not open for further replies.

mick the mend

Junior Member level 3
Joined
Dec 31, 1999
Messages
25
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
103
I found this article for the diy people (like me)http://www.dnai.com/~rexa/Projects/CuCl_ech.html

and it works really well

*****************************************
Please don't reply unless you have useful information to add on this post.Thanks
Any other replies are always welcome via PM.
 

Johnnyquest

Newbie level 6
Joined
May 20, 2001
Messages
13
Helped
1
Reputation
2
Reaction score
0
Trophy points
1,281
Activity points
125
Is this method better than using sodium persulfate? Where can you purchase Cupric Chloride?
 

T7355

Newbie level 6
Joined
Feb 21, 2002
Messages
12
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
16
I have been using nitric acid (HNO3)that works well and quick if you make a solution not to strong. Gives some fumes so you have to evacuate the air. Be careful about spilling and protect the eyes.
 

ultravox

Junior Member level 1
Joined
Dec 31, 1999
Messages
16
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
113
I have been using copper cloride etch solution for many years and always works very fine.
When the solution is saturated you just have to regenerate with HCl and H2O2.
Never had any problems.
 

MrEd

Advanced Member level 4
Joined
Apr 26, 2001
Messages
108
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,298
Location
the Singularity
Activity points
1,028
I used to use ferrochloride and it work ok, not very well if the water was cold.

MrEd
 

House_Cat

Advanced Member level 4
Joined
Feb 21, 2002
Messages
1,371
Helped
406
Reputation
812
Reaction score
98
Trophy points
1,328
Location
USA
Activity points
16,422
For my home projects, I have always used Ferric Chloride. Whatever shortcomings it may have, it is relatively safe to use and easy to get.
At work, when we need a quick one or two sided proto board, we use Ammonium Persulfate. It is a quick etchant and does a clean job, but it is somewhat dangerous (it is a strong oxidizer and can make rocket fuel out of almost any volatile fuel). We get it at a local lab supply house.
 

the WasteLander

Junior Member level 1
Joined
Feb 24, 2002
Messages
18
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Location
Italy
Activity points
71
Can anybody provide Chapter 7 from the same book? I'm very interested in knowing something more about DIY solder masks (i.e. the -- usually green -- surface coatings) for PCBs.
Thanks in advance.

Greetz
 

cadb0y

Member level 3
Joined
Feb 6, 2002
Messages
57
Helped
2
Reputation
4
Reaction score
0
Trophy points
1,286
Activity points
479
ferric cloride is best, use that w/ pre*ss-n-p*eel iron on for home projects
 

cadb0y

Member level 3
Joined
Feb 6, 2002
Messages
57
Helped
2
Reputation
4
Reaction score
0
Trophy points
1,286
Activity points
479
also to use ferric clo, use 2 pans fill large w/ hot water small w/ cloride put board in cloride put small pan in big pan and start shaking w/ stick works great
 

shorty

Member level 2
Joined
Feb 26, 2002
Messages
46
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Location
Austria
Activity points
260
I also use FerroIIIChloride
I tried HCL+ H2O2 but it´s difficult to handle (if you use the wrong concentrade
you etch a PCB in only 10 second´s !!)

but be careful, the Stains are ugly
 

T

tat2lou

Guest
I use an old aquarium ariator (sic) to agitate ferric chloric and speed up the time for home projects.
 

cae

Junior Member level 1
Joined
Aug 6, 2001
Messages
16
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
40
BEWARE of breathing Ammonium Persulfate fumes while etching PCB'S. These fumes can cause severe burns to the throat and vocal chords. It appears this damage is irreversiable.
 

cadb0y

Member level 3
Joined
Feb 6, 2002
Messages
57
Helped
2
Reputation
4
Reaction score
0
Trophy points
1,286
Activity points
479
sound bad, i think i not try it :smile:
 

marie65

Super Member
Joined
Jan 15, 2002
Messages
198
Helped
19
Reputation
38
Reaction score
8
Trophy points
1,298
Activity points
1,506
On 2002-02-25 22:18, ultravox wrote:
I have been using copper cloride etch solution for many years and always works very fine.
When the solution is saturated you just have to regenerate with HCl and H2O2.
Never had any problems.
Hi Ultravox
Please explain how you regenerate the solution? I usually discard the solution when it's saturated :sad:
 

MITSUKO

Member level 2
Joined
Jun 6, 2001
Messages
48
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
340
THE major advantage on FE(III)Cl solutions is that you can store them for years withoul loss of quality . I once misplaced a bottle of almost new mixture , and found it back about five years later . The solution was still as good as new .

The major disadvantage are the stains , wich wil ruin anything it is spilled upon .

Mitsuko
 

GrandAlf

Advanced Member level 2
Joined
Mar 9, 2002
Messages
520
Helped
47
Reputation
92
Reaction score
6
Trophy points
1,298
Location
UK
Activity points
4,730
I use precoated boards and ferric cloride mixed with "boiling" water, etches in 5-10 mins with some agitation. Works every time for me.
 

junglejenny

Member level 4
Joined
Nov 25, 2001
Messages
72
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,288
Activity points
572
I used to use Ferric Cloride but I have switched over to Sodium Persolphate which I prefer. The tub came with some really scarry warnings about using it. Does anyone have some sensible precaution tips on do's and donts with it? I am not planning on drinking it or putting it in my eye. It is corrosive so I try not to get it anywhere. Anything else?


JJ
 

srhoar

Advanced Member level 4
Joined
Jul 12, 2002
Messages
119
Helped
22
Reputation
44
Reaction score
10
Trophy points
1,298
Location
The center of the World - Dallas
Activity points
657
I wrote a procedure for using just a dot matrix printer and simple supplies for making my boards. It was a while ago before I could afford a LASER printer.

h**p://susanandred.com/

look in the technical page
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top