Reply by RobynHoodridge

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Posted on Shaving Giraffe - a shave horse re-design from Africa

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127 posts in 2329 days

#1 posted 02-10-2013 09:45 AM

The question of clamping force got me wondering about the actual value. So i did the very scientific bathroom scale test.
The weight of the Giraffe itself creates about 7 kg (15.5 lb) of force at the clamp.
With me seated on it, the force ranges roughly between 15 kg (33 lb) and 19 kg (42 lb). Depending heavily on how far forward / backward on the seat i place myself. And i weigh 70 kg (154 lb).
Moving the position of the clamping bar (top vise jaw) backward by 50 mm gives 4 or 5 lb greater clamping force.
You could work out pressure values from this (pounds per square inch for example), which would obviously depend on the size of what you were clamping.

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