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PDF and print versions-- Mechanical Advantage: Tools for the Wild Vertical

Original Post
John Middendorf · · Australia and USA · Joined Jun 2011 · Points: 34

On http://bigwalls.net there are now downloadable PDFs of my tools and technique research.

These two volumes cover the origins of mechanical protected rock climbing and are compiled from the research I have been posting on the  bigwallgear.com site over the past two years.

There are also links to Blurb USA  if you want to order a printed version.  Enjoy!

The Muddyboots · · Unknown Hometown · Joined May 2020 · Points: 0

John, congratulations on the completion of volumes one and two! thanks for all the work you put into them. I’m going to get the print version ASAP.

keep doing what you do!

John Middendorf · · Australia and USA · Joined Jun 2011 · Points: 34
Bb Cc wrote:

Just ordered print versions. 

Great!  I hope you enjoy them.  Cheers!

Gregory Moint · · Unknown Hometown · Joined Apr 2025 · Points: 0

Great, thanks. The PDF format is very convenient. This week I wanted to review the PDF files of those tools, but unfortunately, I couldn’t open them. I’m sure the issue was on my end, because after I used the DjVu to PDF converter at pdfguru.com/djvu-to-pdf and converted the manual to another format, it opened without any problems. Now I just need to fix one more issue with my PDF viewer.

Guideline #1: Don't be a jerk.

Big Wall and Aid Climbing
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