Homebrew PCBs

Hello, fellow PCB makers,

I'm new to the etching community, and most of my learning has come
either from here or other places online.

I've made 3 successful boards so far using the Toner Transfer method and
Muriatic Acid with hydrogen peroxide, but I'm worried about a critical
step:

After removing the etched board from the etching solution, I dried it
with a paper towel and then cleaned it with acetone.  Am I at risk of
creating small particles of the friction-based explosive Acetone
Peroxide because I didn't first rinse the etched board with water?

Without knowing about this accidental byproduct beforehand, I've already
soldered components onto the board and added a layer of epoxy to the
bottom as a sealant.
Because this board is going to have to  take a lot of vibrations (it's a
quadcopter controller board), should I trash it to e-waste and start
over?

Lastly, has anyone had any bad experiences in accidentally making
acetone peroxide on their PCBs using HCL, H2O2, and Acetone?

Thanks everyone!

Sincerely,

Poofjunior



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

On 29/12/2011 15:43, poofjunior wrote:
> Hello, fellow PCB makers,
>
> I'm new to the etching community, and most of my learning has come
> either from here or other places online.
>
> I've made 3 successful boards so far using the Toner Transfer method and
> Muriatic Acid with hydrogen peroxide, but I'm worried about a critical
> step:
>
> After removing the etched board from the etching solution, I dried it
> with a paper towel and then cleaned it with acetone. Am I at risk of
> creating small particles of the friction-based explosive Acetone
> Peroxide because I didn't first rinse the etched board with water?
>
> Without knowing about this accidental byproduct beforehand, I've already
> soldered components onto the board and added a layer of epoxy to the
> bottom as a sealant.
> Because this board is going to have to take a lot of vibrations (it's a
> quadcopter controller board), should I trash it to e-waste and start
> over?
>
> Lastly, has anyone had any bad experiences in accidentally making
> acetone peroxide on their PCBs using HCL, H2O2, and Acetone?


There isn't any danger of an explosion, but the copper on your board 
might corrode because you didn't rinse it.

Leon
-- 
Leon Heller
G1HSM

I wouldn't think you'd have much to worry about.  If you made anything you would have heard it popping by now, especially while soldering. :-)  The quantities would also be minute.  

However, I would, in the future, rinse in water first just to get the etchant down the drain rather than in the trash can, where it can mix with all kinds of other stuff.

Of course, I haven't actually *seen* your board, so if there are white crystals hanging off of it and/or your quadcopter blows up, it's not my fault. ;-)

	Mike

On Dec 29, 2011, at 8:43 AM, poofjunior wrote:

> Hello, fellow PCB makers,
> 
> I'm new to the etching community, and most of my learning has come
> either from here or other places online.
> 
> I've made 3 successful boards so far using the Toner Transfer method and
> Muriatic Acid with hydrogen peroxide, but I'm worried about a critical
> step:
> 
> After removing the etched board from the etching solution, I dried it
> with a paper towel and then cleaned it with acetone. Am I at risk of
> creating small particles of the friction-based explosive Acetone
> Peroxide because I didn't first rinse the etched board with water?
> 
> Without knowing about this accidental byproduct beforehand, I've already
> soldered components onto the board and added a layer of epoxy to the
> bottom as a sealant.
> Because this board is going to have to take a lot of vibrations (it's a
> quadcopter controller board), should I trash it to e-waste and start
> over?
> 
> Lastly, has anyone had any bad experiences in accidentally making
> acetone peroxide on their PCBs using HCL, H2O2, and Acetone?
> 
> Thanks everyone!
> 
> Sincerely,
> 
> Poofjunior
> 
> [Non-text portions of this message have been removed]
> 
> 



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

Your friendly neighborhood terrorist calls  Acetone Peroxide 
"Mother of Satan" because it can blow up in their  faces!

Probably nothing to worry about with the minute
quantities that  might accidentally be produced in circuit board work.

73 Todd WD4NGG

When I was about 12 I made some nitrogen tri-iodide, another very 
unstable and powerful explosive, and left it to dry on a piece of filter 
paper. The next morning my mother came into my room, complained about it 
being untidy, saw the filter paper with what she thought was some dirt 
on it, picked it up to illustrate the point she was making, and there 
was a very loud explosion!

I also made some in the chemistry lab at school and sprinkled it about 
the floor. Explosions resulted when the other kids stepped on it.

Leon
-- 
Leon Heller
G1HSM

Hi,

 

You are safe, it takes a little more than just Muriatic Acid and hydrogen
peroxide. It's also a bit more complex than simply mixing it all together.  

 

Ron Cody

KF7MKY

 

"You learn from your mistakes...Today I hope not to learn to much."

From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
On Behalf Of poofjunior
Sent: December 29, 2011 7:44 AM
To: Homebrew_PCBs@yahoogroups.com
Subject: [Homebrew_PCBs] Explosive Byproduct: what are the risks with
muriatic acid?

 

  

Hello, fellow PCB makers,

I'm new to the etching community, and most of my learning has come
either from here or other places online.

I've made 3 successful boards so far using the Toner Transfer method and
Muriatic Acid with hydrogen peroxide, but I'm worried about a critical
step:

After removing the etched board from the etching solution, I dried it
with a paper towel and then cleaned it with acetone. Am I at risk of
creating small particles of the friction-based explosive Acetone
Peroxide because I didn't first rinse the etched board with water?

Without knowing about this accidental byproduct beforehand, I've already
soldered components onto the board and added a layer of epoxy to the
bottom as a sealant.
Because this board is going to have to take a lot of vibrations (it's a
quadcopter controller board), should I trash it to e-waste and start
over?

Lastly, has anyone had any bad experiences in accidentally making
acetone peroxide on their PCBs using HCL, H2O2, and Acetone?

Thanks everyone!

Sincerely,

Poofjunior

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





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

El 29/12/11 22:33, Leon Heller escribi\ufffd:
> When I was about 12 I made some nitrogen tri-iodide, another very
> unstable and powerful explosive, and left it to dry on a piece of filter
> paper.

We did that at school, putting it around things like door frames so when 
someone closed a door there would be a very loud bang. It all sort of 
backfired when the head of Chemistry happened to be the one to close the 
door one time, it wasn't exactly hard for him to figure out what it was, 
and he had a pretty good idea who was responsible...

Today in our increasingly paranoid and scared society you could get put 
in prison due to anti-terror legislation for making the stuff, I think :-(

On Fri, 30 Dec 2011, Dylan Smith wrote:

> El 29/12/11 22:33, Leon Heller escribi?:
>> When I was about 12 I made some nitrogen tri-iodide, another very
>> unstable and powerful explosive, and left it to dry on a piece of filter
>> paper.
>
> We did that at school, putting it around things like door frames so when
> someone closed a door there would be a very loud bang. It all sort of
> backfired when the head of Chemistry happened to be the one to close the
> door one time, it wasn't exactly hard for him to figure out what it was,
> and he had a pretty good idea who was responsible...
>
> Today in our increasingly paranoid and scared society you could get put
> in prison due to anti-terror legislation for making the stuff, I think :-(

I remember a story in which someone dipped the ends of a pair of pencils 
in the stuff.  The pencils were owned by a student who was well-known for 
playing "Wipeout" with them.

-- 
David Griffith
dgriffi@...

A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?

For me, NI3 to me is the very embodiment of the dawn of the internet: in the late 80's a friend of ours said he was over BBSes and wanted to get on this new thing, the internet. Which was Usenet trickle-fed via modem, and all of rec.pyro could fit on one floppy. NI3 was one of the things they listed. Even in pre-internet Australia, you already couldn't get iodine crystals anywhere, but he eventually found some (he told the pharmacist it was to make an explosive) and we got to see some little brown/purple puffs of smoke where the little blobs he'd laid out to dry got set off by falling drizzle.

PG

On 30/12/2011, at 9:18 PM, David Griffith wrote:

> On Fri, 30 Dec 2011, Dylan Smith wrote:
> 
> > El 29/12/11 22:33, Leon Heller escribi?:
> >> When I was about 12 I made some nitrogen tri-iodide, another very
> >> unstable and powerful explosive, and left it to dry on a piece of filter
> >> paper.
> >
> > We did that at school, putting it around things like door frames so when
> > someone closed a door there would be a very loud bang. It all sort of
> > backfired when the head of Chemistry happened to be the one to close the
> > door one time, it wasn't exactly hard for him to figure out what it was,
> > and he had a pretty good idea who was responsible...
> >
> > Today in our increasingly paranoid and scared society you could get put
> > in prison due to anti-terror legislation for making the stuff, I think :-(
> 
> I remember a story in which someone dipped the ends of a pair of pencils 
> in the stuff. The pencils were owned by a student who was well-known for 
> playing "Wipeout" with them.
> 
> -- 
> David Griffith
> dgriffi@...
> 
> A: Because it fouls the order in which people normally read text.
> Q: Why is top-posting such a bad thing?
> A: Top-posting.
> Q: What is the most annoying thing in e-mail?
>

By guessing your level of knowledge on the matter, I would recommend that you shoul be more carefull with the chlorine gas that may be released from the etching solution, please wear a gas mask with appropiate filter for chlorine gas, if you cant get a chlorine filter, any carbon activated filter will be better than nothing, just replace it more ofther. Also make the mix, etch, and store the solution in a well ventilated area, and do not close the container too tigth, there are some gasses that keeps going out of the solution once bottled. 

Final advice, DO NOT THROW IT ON THE DRAIN, first it can be regenerated indefinitely and seccond, copper leads to malformation in fish gills. 

Please do not be scared with all of this, cucl is the best etch out there, more and more pcb manufacturers are converting to cucl because its clean, cheap,reusable, you can get very precise lines and more important fact: ECOLOGYC

 

--- In Homebrew_PCBs@yahoogroups.com, "poofjunior" <seeifyoucanmeetme@...> wrote:

>
> Hello, fellow PCB makers,
> 
> I'm new to the etching community, and most of my learning has come
> either from here or other places online.
> 
> I've made 3 successful boards so far using the Toner Transfer method and
> Muriatic Acid with hydrogen peroxide, but I'm worried about a critical
> step:
> 
> After removing the etched board from the etching solution, I dried it
> with a paper towel and then cleaned it with acetone.  Am I at risk of
> creating small particles of the friction-based explosive Acetone
> Peroxide because I didn't first rinse the etched board with water?
> 
> Without knowing about this accidental byproduct beforehand, I've already
> soldered components onto the board and added a layer of epoxy to the
> bottom as a sealant.
> Because this board is going to have to  take a lot of vibrations (it's a
> quadcopter controller board), should I trash it to e-waste and start
> over?
> 
> Lastly, has anyone had any bad experiences in accidentally making
> acetone peroxide on their PCBs using HCL, H2O2, and Acetone?
> 
> Thanks everyone!
> 
> Sincerely,
> 
> Poofjunior
> 
> 
> 
> [Non-text portions of this message have been removed]
>