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pcb copper clad --- 1 oz ? 2 oz ? — Parallax Forums

pcb copper clad --- 1 oz ? 2 oz ?

tommytommy Posts: 84
edited 2007-02-05 18:34 in General Discussion
Hello.
.· I'm almost finished with a project on my first printed circuit board.· It came·out far better than I expected, even with two wiring misteaks (sic) -- one I fixed with the SX's programming (to reverse the order of·four bits) and·for the other·I resoldered two resistors to correct the paths that should've crossed.

.··The chemicals did not mess up my kitchen,·I have all 10·of those brittle .040 bits left after drilling the·hundred holes·using my plain ol' ordinary Sears' brand drill press, but mostly I'm amazed at how much wiring can now be done on the screen instead of on the work bench...·and how neat-looking is the finished product.· In addition, I was able to use an old-fashioned paper-cutter (and some elbow-grease) to trim the board accurately and with no 'sawdust'.·· All went well.

.· Today's question, as I am ordering more boards -- of what use are the 2-oz boards ?· This·1-oz board that I started with seemed to work just fine.

tommy

Comments

  • ForrestForrest Posts: 1,341
    edited 2007-02-05 11:20
    Well, 2 oz copper will take twice as long to etch as 1 oz copper. 2 oz copper (and higher) is used if you need more current carrying capacity. Are you working on a motor controller to run large motors?
  • BeanBean Posts: 8,129
    edited 2007-02-05 13:03
    Also you can make smaller tracks with thinner copper (because it doesn't undercut as much). We routinely use 0.5 oz copper on our boards. They come out nice and crisp.

    Bean.

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  • tommytommy Posts: 84
    edited 2007-02-05 18:34
    ...originators reply:



    . okay.· so it's current. I hadn't been thinking depth for current, and would've made the traces wider, or used wire,·if I thought necessary.· but, aha (!) twice as thick would equal twice as wide !

    . no, my 'hobby' uses have no current (pun accidental) use for higher current, but now that I can etch boards (which make the projects so much more neat and faster to·build) - little motors are next.

    ·.thank you.
    tommy
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