Author Topic: Etched enclosures  (Read 792314 times)

thomasha

Re: Etched enclosures
« Reply #2580 on: June 23, 2020, 02:36:32 PM »
Tried something new: transfering and etching 3 sides at the same time.
Still something to learn. The edges are not as good as I would like, probably needed more effort during the transfer.

Instead of etching everything at the same time I kept turning it in a shallow puddle of acid. The edges suffered with the overexposure too.







deadastronaut

Re: Etched enclosures
« Reply #2581 on: June 23, 2020, 03:11:38 PM »
Awesome...that looks excellent.... 8) 8) 8)

Well worth trying man...nice one
https://www.youtube.com/user/100roberthenry
https://deadastronaut.wixsite.com/effects

chasm reverb/tremshifter/faze filter/abductor II delay/timestream reverb/dreamtime delay/skinwalker hi gain dist/black triangle OD/ nano drums/space patrol fuzz//

Hexjibber

Re: Etched enclosures
« Reply #2582 on: June 23, 2020, 03:31:10 PM »
Wow thatís awesome!

lars-musik

Re: Etched enclosures
« Reply #2583 on: June 24, 2020, 02:30:23 AM »
Wow! Fantastic. I hope, I'll get that out of my head until my next enclosures are due.....

thomasha

Re: Etched enclosures
« Reply #2584 on: June 24, 2020, 02:55:21 AM »
Thanks!
Has anyone tried something similar?
Doing every side separately can give better results, but takes too much time. I think iíll work longer on the ironing of the edges next time.

Marcos - Munky

Re: Etched enclosures
« Reply #2585 on: June 24, 2020, 08:52:31 AM »
I tried it once, doing all the faces but the bottom one: https://www.diystompboxes.com/smfforum/index.php?topic=85803.msg1124263#msg1124263

I can't really remember if I did all the faces at the same time or one by one, but I do remember it was a hard etching because one side come more shallow than the other. I didn't tried it again, not for the extra work but because I didn't had to. This one was a drawing by a friend that asked me for the pedal, so it was a kind of "signature exclusive" build :icon_mrgreen:.

But I don't think I can do more than one side with as much details as you can. In fact, I don't know if I can do just one side with as much details as you can :icon_mrgreen:

deadastronaut

Re: Etched enclosures
« Reply #2586 on: June 30, 2020, 12:47:50 PM »
my latest....

after months of tinkering on breadboard with different chorus's...here it is,  skyscape chorus.

a heavily modded small stone with bells n whistles.....















and  demo of course....

https://www.youtube.com/user/100roberthenry
https://deadastronaut.wixsite.com/effects

chasm reverb/tremshifter/faze filter/abductor II delay/timestream reverb/dreamtime delay/skinwalker hi gain dist/black triangle OD/ nano drums/space patrol fuzz//

bluebunny

Re: Etched enclosures
« Reply #2587 on: June 30, 2020, 04:35:57 PM »
Nice work, Rob!  :icon_cool:
  • SUPPORTER
Ohm's Law - much like Coles Law, but with less cabbage...

Marcos - Munky

Re: Etched enclosures
« Reply #2588 on: June 30, 2020, 05:42:16 PM »
Awesome - as all your other previous etches :icon_wink:

lars-musik

Re: Etched enclosures
« Reply #2589 on: September 08, 2020, 09:40:58 AM »
SMD always feels a bit like cheating. But it is still a lot of work taking the debugging into account (I submitted a faulty BOM and one gain setting resistor was indeed a 3n3 cap. That took me some time to figure out!).
So here is the "Hipster", two hyped pedals (at least in Germany) in one enclosure. A Benson Preamp and a 1981.



phasetrans

Re: Etched enclosures
« Reply #2590 on: September 08, 2020, 01:45:48 PM »
So here is the "Hipster", two hyped pedals (at least in Germany) in one enclosure. A Benson Preamp and a 1981.



I really like this. How did you do the color fading? What's the etching solution / time.

davent

Re: Etched enclosures
« Reply #2591 on: September 08, 2020, 01:59:33 PM »
So here is the "Hipster", two hyped pedals (at least in Germany) in one enclosure. A Benson Preamp and a 1981.



I really like this. How did you do the color fading? What's the etching solution / time.

Just aim, angle your paint source so paint doesn't reach the far end of the enclosure. Practice, experiment spraying a fade on paper before you try it on an enclosure. Way easier to do than explain.
dave
"If you always do what you always did- you always get what you always got." - Unknown
https://chrome.google.com/webstore/detail/photobucket-hotlink-fix/kegnjbncdcliihbemealioapbifiaedg

lars-musik

Re: Etched enclosures
« Reply #2592 on: September 08, 2020, 02:37:50 PM »

I really like this. How did you do the color fading? What's the etching solution / time.
[/quote]
Fading as Davent said. The etching solution is HCl, 24%, heated to about 60įC. But I do the etching under a fume hood in a lab - the gases are noxious and the reaction is quite exothermic. I really wouldn't recommend it at home.

phasetrans

Re: Etched enclosures
« Reply #2593 on: September 08, 2020, 02:47:11 PM »
Fading as Davent said. The etching solution is HCl, 24%, heated to about 60įC. But I do the etching under a fume hood in a lab - the gases are noxious and the reaction is quite exothermic. I really wouldn't recommend it at home.

My graduate school education was in physical chemistry and materials science, so this is my kind of reaction :-) Have you ever tried a phosphoric / nitric bright dip etchant?

« Last Edit: September 08, 2020, 06:32:07 PM by phasetrans »

lars-musik

Re: Etched enclosures
« Reply #2594 on: September 08, 2020, 02:52:39 PM »

My graduate school education was in physical chemistry and materials science, so this is my kind of reaction :-)

Haha. That's settled then.


 Have you ever tried a phosphoric / nitric bright dip etchant?
No, I just googled it.  Sounds very good. However, I found my standard protocol and will stick with it.

phasetrans

Re: Etched enclosures
« Reply #2595 on: September 08, 2020, 06:34:54 PM »

 Have you ever tried a phosphoric / nitric bright dip etchant?
No, I just googled it.  Sounds very good. However, I found my standard protocol and will stick with it.

What do you use as the protective film in the hot acid? Standard transfer paper?


phasetrans

Re: Etched enclosures
« Reply #2597 on: September 10, 2020, 01:43:02 PM »

What do you use as the protective film in the hot acid? Standard transfer paper?

This: https://de.farnell.com/kontakt-chemie/positiv-20-200ml/fotolack-positiv-fl-ssigresist/dp/801010

Oh, a "real" positive resist. Takes me back to my first engineering job, lithography engineer at AMD.

What do you use to transfer the image? Acetate? Paper made transparent (somehow)?


Re: Etched enclosures
« Reply #2599 on: October 08, 2020, 09:28:31 AM »
My first ever and second DIY pedal build for me and my friend. Big Muff Pi v3 clone with some modifications.
Elecrolytically etched case, it is a bit wild process to control it, first attempt (left) was slightly better than second one  :icon_rolleyes: