Raspberry Pi Hardware Projects 2 by Andrew Robinson; Mike Cook

Author:Andrew Robinson; Mike Cook [Cook, Andrew Robinson; Mike]
Language: eng
Format: epub
Tags: Computers, Systems Architecture, General, vl-nfcompvg
ISBN: 9781118723906
Google: rJQYAgAAQBAJ
Amazon: B00G574G48
Publisher: Wiley
Published: 2013-10-21T00:00:00+00:00

Figure 3-4: The front view of the pendulum frame.

Figure 3-5: The top view of the pendulum frame.

The angled channel fits flush over the far end of the cross channels, but you need to cut out a small notch out of one side of it as shown in Figure 3-6. The fixings for these angled pieces are not nuts and bolts because there is no room for a nut in the cross channel. Therefore, I had to cut a thread into the hole in the cross channel. For the M3 fixings I used, this meant drilling a 2.5 mm hole and running an M3 tap through it. The aluminum is 1/8" thick, so it takes a thread nicely – but remember that it is only aluminum, so don’t tighten it up too much, or you might strip the thread. When cutting thread with a tap, once it is going, always turn it one turn in and then half a turn out. This cuts off the swarf and stops the hole from jamming up. Use a drop of oil when cutting a thread to make the tap last longer. If you are in your local DIY store and ask where the taps are, and are directed to the plumbing section, then find a store that knows what it is selling.

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