179
edits
Equipment/PCB etch station: Difference between revisions
From London Hackspace Wiki
→Status
(→Status) |
|||
| Line 55: | Line 55: | ||
* NaOH (for checking concentration) | * NaOH (for checking concentration) | ||
''' DO NOT put Ferric Chloride in this tank !!!''' | ''' DO NOT put Ferric Chloride in this tank !!!''' In fact, please don't use ferric chloride at all - it silts up the tank and is really difficult to clean up. If there is some reason why we wish to use it again, it may be possible to use the 4th tank for it. | ||
====CuCl2 Etchant==== | ====CuCl2 Etchant==== | ||
| Line 79: | Line 80: | ||
Currently contains clean water (mainly to protect the heater if accidentally switched on | Currently contains clean water (mainly to protect the heater if accidentally switched on | ||
===Planned changes=== | ===Planned changes=== | ||
*Use Cupric chloride in the etch tank rather than Ferric chloride, which is messier, requires frequent replacement and silts up the bubbler. | *<del>Use Cupric chloride in the etch tank rather than Ferric chloride, which is messier, requires frequent replacement and silts up the bubbler.</del> Has been done | ||
*Replace the bubbler in the bottom of the tank with a bar suspended from the basket, so that it's easier to clean. | *Replace the bubbler in the bottom of the tank with a bar suspended from the basket, so that it's easier to clean. | ||
*Link both the large air pump and the small one into the same air supply so the cupric chloride can easily be regenerated (requires long slow bubbling rather than short fast bubbling) | *Link both the large air pump and the small one into the same air supply so the cupric chloride can easily be regenerated (requires long slow bubbling rather than short fast bubbling) | ||
