I built a fixture in accordance with Chuck's directions on building enclosures and it turned out very well. Last night I was able to test solder together two sides using a piece of 24AWG insulated wire to ensure that the angle was 90 degrees once the solder dried (see pics below). I used a 30W Weller iron. I found that the technique worked better by having the vertical piece of PCB mating directly with the bottom of the fixture and in front of the 24AWG wire.
|Enclosure Fixture as per K7QO. The walls are a bit high. A lot of time was spent ensuring that the corner consisted of all 90 degree angles.|
Much as I would love to own a shear I found that I could accurately cut PCB's to exact size using my table saw. More on that later when I get to build a prototype enclosure as the next step.
Thanks to Chuck for sharing his extensive knowledge with us.
|A piece of insulated 24AWG wire is used to compensate for the solder shrinkage|
|Clamps are used to hold the pieces in place|
|The 'shrinkage compensating angle' can be clearly seen|
|Completed prototype effort. In fact the thinner black wire resulted in a better right angle finish|