I've just finished making these bar clamps, based on a design by Neil Paskin (with a few minor design changes by me).
There are lots more details (including a 30 page build log showing how they were made in exhaustive detail) on my website:
https://www.cgtk.co.uk/woodwork/handtools/barclamps
Build Log: https://www.cgtk.co.uk/woodwork/hand...barclamps/blog
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