ee:pcbfoametching
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision | ||
|
ee:pcbfoametching [2022/02/16 18:43] 21960@students.hsrw |
ee:pcbfoametching [2024/12/12 15:29] (current) FKR@staff.hsrw |
||
|---|---|---|---|
| Line 167: | Line 167: | ||
| - place board in etching foam using the rack hanger of the clamp ensuring the complete board is submerged within the etching foam. | - place board in etching foam using the rack hanger of the clamp ensuring the complete board is submerged within the etching foam. | ||
| - Wait for the etching process to complete. You may have to wait a couple of minutes before something seems to be happening but from this point it should be going quite fast and obvious. To check etching please rinse in neutralization solution to allow better inspection. | - Wait for the etching process to complete. You may have to wait a couple of minutes before something seems to be happening but from this point it should be going quite fast and obvious. To check etching please rinse in neutralization solution to allow better inspection. | ||
| + | - In case you now notice that developing was too short, you can clean the PCB and develop it a little further, before completing the etching process. | ||
| - Continue etching until complete. this process should take around 4-6 minutes. Do not wait to long as it will affect the protected traces as well if you wait too long. | - Continue etching until complete. this process should take around 4-6 minutes. Do not wait to long as it will affect the protected traces as well if you wait too long. | ||
| - Rinse the board thoroughly with the rinsing function. | - Rinse the board thoroughly with the rinsing function. | ||
| Line 172: | Line 173: | ||
| - dry the board using paper towels | - dry the board using paper towels | ||
| - Use alcohol wipes to remove the remaining photo-resist from the board. Be thorough, this will show up as blackness on wipe. | - Use alcohol wipes to remove the remaining photo-resist from the board. Be thorough, this will show up as blackness on wipe. | ||
| + | - If you do not plan on soldering the PCBs on the same day, use solderable protective resin ("Lötlack") to protect the copper from oxidizing. | ||
| - Dispose of waste properly. | - Dispose of waste properly. | ||
ee/pcbfoametching.1645033406.txt.gz · Last modified: 2022/02/16 18:43 by 21960@students.hsrw
Page Tools
