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PCB Etch Training: Difference between revisions
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Calum's demo used MICROTRAK single sided boards, in 35um copper thickness, 1.6mm thick board. You can buy them here: http://www.megauk.com/pcb_laminates.php though I think they have a minimum order, rapid electronics also sells them. Exposure to the UV light was for 6 minutes with an acetate sheet printed at any random shop. Developing and etch times will vary depending on temp and some other factors - but 2.5 minutes for developing is a decent place to start, and 10-20 minutes for etching. Traces less than 10mils in width (and also traces with less than 10 mils between them) will need careful judging of exposure/development/etch times. | Calum's demo used MICROTRAK single sided boards, in 35um copper thickness, 1.6mm thick board. You can buy them here: http://www.megauk.com/pcb_laminates.php though I think they have a minimum order, rapid electronics also sells them. Exposure to the UV light was for 6 minutes with an acetate sheet printed at any random shop. Developing and etch times will vary depending on temp and some other factors - but 2.5 minutes for developing is a decent place to start, and 10-20 minutes for etching. Traces less than 10mils in width (and also traces with less than 10 mils between them) will need careful judging of exposure/development/etch times. | ||
==Upcoming sessions== | ==Upcoming sessions== | ||
11.00 (am) Sunday 8th October (this session includes surface mount soldering tuition) | |||
* Insert NAME + Hackspace member no | |||
*1 | |||
*2 | |||
*3 | |||
==Previous sessions== | |||
18:00 Wednesday 7th June 2017 | 18:00 Wednesday 7th June 2017 | ||
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*5 | *5 | ||
*6 | *6 | ||
