Ok that is a kewl collection of four puzzles.
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Hi @richardp,
There are a couple of threads about this book.
It looks really awesome. I backed it to get the plans only at this point.
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I might be a little slow, but I did earn a badge for posting so I have that going for me
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It’s all about getting badges! (and likes! 
)
I’ve double post a couple things in the past as well. It’s hard to keep up with all the threads and remember what was posted previously.
Keep posting interesting things when you find them!
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We don’t need no stinking badges.
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