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Figure 15 Fitted hose lock male adapter
3.6.2 Alterations on the ModelAt first a small hole was drilled into the bottom end piece for the anchor leg for fluidising and to create a grip while pulling a vacuum. However, it was found that the grip was not strong enough to secure the model leg. Through careful evaluation, it became clear that a hole at the bottom would cause the sand grains to be drawn towards the anchor leg end and so the area of gripping would be a lot smaller. It was decided to have many smaller holes along the side of the anchor leg since this would force the sand particles to be drawn towards its surface area and create a sufficient grip. The difference of the two scenarios is clearly illustrated in Figure 16. 
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