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Article #729Re: What can I do to keep this board from warping?
From: Mark Harriss
Date: Sat, 26 Sep 2009 07:51
Date: Sat, 26 Sep 2009 07:51
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2294 bytes
mickgeyver wrote: > I'm trying to make a 10x scope probe that is capable of dealing with > slightly higher voltage levels of about +/- 20v yet at a high > impedance ~20Meg. This link "http://picasaweb.google.com/ > UncleAltheKiddiesPal/Probe?feat=directlink" has some photo's showing > the probe and board warpage. The board was made from double sided > 0.020-inch stock etched with a PCB milling machine (perhaps part of > the problem). It is (obviously) hand assembled. I would appreciate > any tips or techniques that I could use to keep this board from > turning into a potato chip during assembly. > > Thank you. > > al Tin the tracks with hot solder on the side outside the curve, as it cools and contracts it will straighten the board.
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