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Author Topic: etching onto goggles?  (Read 1220 times)
passbyguy
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United States United States


« on: July 09, 2010, 03:07:57 pm »

Back story (if anyone's interested)
Spoiler (click to show/hide)

Here's pics of the more controlled goggle:
Spoiler (click to show/hide)

Etching gone terribly bad:
Spoiler (click to show/hide)

My etching ghetto rig:

So my question right now would be, how do I get the etch to etch evenly around the circumference?
It mainly cause I've seen flat surface etching, I thought, etching around a circle would have a diff technique.



*edit - the IMG tags weren't working. boo flickr. poor form.
« Last Edit: July 09, 2010, 03:32:52 pm by passbyguy » Logged
jringling
Time Traveler
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convicted Rogue and Vagabond…long story…


WWW
« Reply #1 on: July 09, 2010, 04:08:46 pm »

The only time I have etched a pipe like you are trying, I placed the piece I was etching inside a larger piece of pipe that was 3X the size. The outer pipe was the anode. I tried to space them evenly to get a good clean etch.


In the next week or so, I'll be doing this again for a different project. I'll try to photograph my set-up as I go along...
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passbyguy
Officer
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United States United States


« Reply #2 on: July 10, 2010, 06:24:29 am »

Cool. Pics and an example to work from would be really helpful. I'm looking forward to your post.
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arcwelder
Zeppelin Admiral
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United States United States


Reverse the polarity!


« Reply #3 on: July 10, 2010, 06:30:43 am »

Pics.

Spoiler (click to show/hide)

Cathode and anode gotta be more or less parallel because the ions transit along the current path which is more or less linear. Angle of exposure increases, etching/plating rate decreases.

You should be able to etch all sides of a round target by surrounding it with multiple flat electrodes.
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Mad repairman for the ship of the damned.

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