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T. Gerhardt "Tosh"

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The Unofficial LEGO Technic Builder's Guide
The Unofficial LEGO Technic Builder's Guide
by Pawel "Sariel" Kmiec
Edition: Paperback
Price: 17.42

10 of 10 people found the following review helpful
5.0 out of 5 stars Engineer's 101, 12 Jun 2013
My 12 year old takes this book to bed every night. He has it fully indexed with post-its sticking out at his favourite sections. Need I say more?

As an automotive design engineer myself, I may be predisposed to the simple beauty of mechanical systems, but everyone who has seen this book can't help being amazed. From the most basic mechanical advantages of simple pulleys, levers and joints, to the most complex synchronised 10-speed gearboxes, it's all in this book. Explained simply, carefully illustrated and logically progressing from mechanical principle, to usage example to Lego build instruction.

If as a kid you don't fall in love with engineering reading this book, you never will. Better stick to banking...

Downside? Be warned. All the studless technic pieces to build these mechanisms don't come cheap. He/she will always 'need' more...
of course, you can always point them to the lego technic 3D build software (free download) where all pieces are available in unlimited supply. :-)

Focused a lot on mechanics of vehicles. Lacks a chapter on statics to understand bridges, arches, etc.

Bottom line: best 15 spent on my son, ever!

Cover-Up Kobo Glo eReader Genuine Leather Cover Case With Auto Sleep / Wake Function (Book Style) - (Black)
Cover-Up Kobo Glo eReader Genuine Leather Cover Case With Auto Sleep / Wake Function (Book Style) - (Black)
Price: 24.20

4.0 out of 5 stars quality Kobo Glo accessory, 10 April 2013
Verified Purchase(What is this?)
I have used the Cover-Up case now for a few weeks and am very happy with it:

+ quality leather on the outside. (cloth inner and PVC flaps)
+ fits the glo perfectly.
+ case closing sleep function much more convenient than the top slider.
+ nice to hold.
+ latch buckle is not in the way.
- white stitching on black leather not quite to my liking (too much contrast), but the stitching is straight and even, so not a quality issue. just personal taste.
- doubles the thickness of the glo when closed, so quite bulky. i would have liked the cover and back to be thinner. I guess this way it is more protective...but this is the reason I dropped the rating to 4* from what is otherwise a full marks product.

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