Testing and Evaluation

When making my design I faced a few problems, I had some faults in my design spec. which I had to change and re think. For example I found that the stresses would be to large on my base with the weight of my hand, so therefore I opted to make a second base to allow the stress balance to be spread between the two. I did this because after time the stress could cause my wood to crack. I also had a problem with my hand. I originally imagined it to be made out of wood; however this would have been to time consuming so therefore I decided to make it out of metal. The process I had to use for my hand was sand casting. To make this happen I had to make a dummy hand to use for the sand casting. For this I had to use a normal latex rubber glove and fill it with some plaster of Paris. The slight problem was when the plaster was drying due to the strange shape I required the latex glove especially at the fingers made a really loose bond between the hand structure and the fingers. So when I cut away the glove to leave the hand structure the fingers tended to fall off. To overcome this I decided to instead of taking it out of the glove to leave it in. This in a way helped with the groves in the hand when the fingers were bent because it provided when done, my hand with a real sense of realism. I faced some problems with my base as it cracked under the pressure. So when I made a new one I had a small amount of time so I had to do a lot of work. I think if I had the time again I would make the base of my design different and have I much larger base with more aspects to it. I wanted to incorporate copper into my design however there wasn’t really any method for this to happen because it wouldn’t have had any effect on the lights structure but just on the aesthetical aspect of the design. To make sure that if my project was to be mass produced then I could have created a jig.

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This would have allowed for the user to have the same base size etc. every time one is made, this would be a good thing to have because in industry you want to have a large turnover to make the biggest amount of profit available. So to have something that could create the same sized bases in a certain amount of time.        

Evaluating against my specification

In my specification I stated that my design needed to be free standing, I did this by making my design base wide enough to with take the stresses from the objects above. ...

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