“I am writing to tell you of two experiments I did to determine what Tensile Force Scorpion Wall Plugs could hold:
1. Experiment on 8mm VILLABOARD walls as used in Bathrooms and Wet Areas.
I set up a sturdy frame with Villa board (one metre square) and attached a spring balance with a system of levers. Then drilled an 8.5 mm hole in the centre of the board and attached a Scorpion plug, with a hook, to the spring balance. I then applied a steadily increasing load until, at90kg, a 300mm diameter piece of the Villa board gave way with a bang.
On examination, the Scorpion was in perfect condition with no sign at all of any distortion.
I have found that the Scorpion is a perfect solution for attaching Safety Grab Handles in wet areas with Villa board walls.
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2. Experiment on an old Gyprock wall.
I drilled an 8.5 mm hole in the wall, in the Gyprock, between the studs and attached a Scorpion plug, with a hook, to the spring balance. Found that the gyprock was soft and crumbled as we tightened the Scorpion and the fingers pulled through the wall with hardly any holding force at all.
To be fair to the Scorpion, any other fastener would have had the same result.
I suggest you make a note to the effect : Always check the condition of the wall for crumbing or aging etc., before using any type of fasteners on hollow walls.”