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Equipment/PCB etch station: Difference between revisions
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* You normally place boards to be etched in the plastic basket under a tank lid, then dip it into the tank. If the PCB is too close to the open end, it will fall out. You may have to drain the tank to retrieve it. You don't want to do this, so put the pcb well into the opening and don't tip it forwards as you remove the basket from the tank. | * You normally place boards to be etched in the plastic basket under a tank lid, then dip it into the tank. If the PCB is too close to the open end, it will fall out. You may have to drain the tank to retrieve it. You don't want to do this, so put the pcb well into the opening and don't tip it forwards as you remove the basket from the tank. | ||
* Very small PCBs may fall through the holes. A possible solution is to put them in fine-mesh envelopes before putting them in the basket. Finding a suitable envelope is left as an exercise for the user (hint - look on the [http://www.megauk.com Mega website]). | * Very small PCBs may fall through the holes. A possible solution is to put them in fine-mesh envelopes before putting them in the basket. Finding a suitable envelope is left as an exercise for the user (hint - look on the [http://www.megauk.com Mega website]). | ||
==Model== | |||
* Make: [http://www.megauk.com Mega Electronics] | |||
* Model: [http://www.megauk.com/production_lines.php PB710S] - PCB 7 tank production line with sink | |||
==Controls== | |||
The leftmost button on the control panel is mains power. If you see it lit up when no-one is using the tank, please turn it off (but if someone _might_ be waiting for it to warm up, please check first!). Probably a good idea to switch off at the mains as well. | |||
Each tank and rinser then has a control section. Working from left to right, these are: | |||
* '''Developer''' - Heat button and 'heater active' light. Set to about 28°C. Heating not normally required. | |||
* '''Developer rinse''' - Spray button activates spray bar. | |||
* '''Etch''' - Heat button and 'heater active' light. Set to about 48°C. Takes about 15-20 minutes to get hot. | |||
** Air bubbler button - only active when heating is also on. | |||
* '''Etch rinse''' - Spray button activates spray bar. | |||
* '''Photoresist stripper''' - Heat button and 'heater active' light. Set to about 50°C. Optional. | |||
* '''Stripper rinse''' - Spray button activates spray bar. | |||
* '''Tinning''' - Heat button and 'heater active' light. Set to about 50°C. Optional. | |||
The spray bars work best if only one is on at a time (and unless you're making a lot of boards at once, you probably only need one). | |||
==Status== | ==Status== | ||
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*It would be nice to have power without using the extension lead. The existing ring main might be extended fairly easily to put sockets on the wall near the sink. | *It would be nice to have power without using the extension lead. The existing ring main might be extended fairly easily to put sockets on the wall near the sink. | ||
==Notes== | ==Notes== | ||
