I poured ferric chloride acid into a plastic container, submerged the treated copper plate, and gently swirled it for 40 minutes. It would have taken less time, but I used minimal acid. One issue I noticed was that the center accumulated clouds of dissolved copper while the edges got the cleaner solution. A larger self-agitating vat could be worth the time.
Ferric acid bath
The results were disappointing. I saw flecks of undissolved copper, which created shorts in some places, and some gaps ran in streaks. I suspect the issues were entirely my fault. I transported the board in a bag containing oil traces, and I probably scratched the etch-resist away to create those fractures.
Flecks and breaks
According to the videos I watched, a complete coil should read 20 Ohms. For that kind of reading, I would measure across at least two layers of spirals, and since I was measuring one, I hoped for ten Ohms. Unfortunately, I saw approximately 1 Ohm, so the design is flawed, the measurement is wrong, my traces are too thick, or some other problem.
Disappointing resistance reading
The rest of the posts for this project have been arranged by date.
First time here?
Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Completed projects from year 7
Completed projects from year 8
Completed projects from year 9
Completed projects from year 10
Disclaimer for http://24hourengineer.blogspot.com and 24HourEngineer.com
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All information on this blog, or linked by this blog, is not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property, or similar, is the responsibility of those involved in the replication.
All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by Brian McEvoy, cannot be used to claim property or assets.
Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim property or assets based on their post.
This blog, including pictures and text, is copyright to Brian McEvoy.
2023-12-13
The results were disappointing. I saw flecks of undissolved copper, which created shorts in some places, and some gaps ran in streaks. I suspect the issues were entirely my fault. I transported the board in a bag containing oil traces, and I probably scratched the etch-resist away to create those fractures.
According to the videos I watched, a complete coil should read 20 Ohms. For that kind of reading, I would measure across at least two layers of spirals, and since I was measuring one, I hoped for ten Ohms. Unfortunately, I saw approximately 1 Ohm, so the design is flawed, the measurement is wrong, my traces are too thick, or some other problem.
The rest of the posts for this project have been arranged by date.
First time here?
Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Completed projects from year 7
Completed projects from year 8
Completed projects from year 9
Completed projects from year 10
Disclaimer for http://24hourengineer.blogspot.com and 24HourEngineer.com
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All information on this blog, or linked by this blog, is not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property, or similar, is the responsibility of those involved in the replication.
All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by Brian McEvoy, cannot be used to claim property or assets.
Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim property or assets based on their post.
This blog, including pictures and text, is copyright to Brian McEvoy.
2023-12-13
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