Design+Specification+-+chart


 * **Criteria** || **Ideal product specification** || **Essential Y/N** || **Existing conforming products** || **Problems with existing products** || **Proposed improvement** ||
 * **Appearance** || Hygienic look || N || 10 || . || No paint, mild steel or soft wood ||
 * . || Contemporary || N || 10 || . || . ||
 * **Environment** || Recycled materials || N || 0 || . || . ||
 * **Performance** || Must cut through the crust || Y || 3 || Most of the wheel types struggle with the crust, particularly as they get old || Make triangular so that force is concentrated more directly over the wheel. Round the ends of the handle so that other hand can be used to apply more force if required ||
 * . || Must be fast to use || N || 3 || None wheel types are slower || . ||
 * . || Must not drag the topping || N || 10 || . || . ||
 * . || Do not scratch the pan || N || 2 || . || Polymer cutting wheel can be an optional replacement for the stainless steel wheel ||
 * **Ergonomics** || Allow room for finger as per anthropometric data || Y || 10 || . || Apperture needs to be 45mm ||
 * . || Must provide correct wrist posture per anthropometric data || N || 3 || Most exisitng cutters do not provide good wrist posture. Mainly the cheaper ones || 102 degrees from forearm is ideal. 135 degrees is acceptable ||
 * . || Power grip would be preferable || N || 0 || None of the existing cutters have a handle that assumes a powerful grip || Make handle 30mm diameter so that fingers will wrap around it ||
 * . || Must have comfortable as per anthropometric data || N || 10 || . || Make handle convex and a minimum of 100mm long ||
 * **Safety** || Protect hand from blade || Y || 10 || . || Create the shield by forming the main frame of the cutter ||
 * **User** || Pizza restaurants || Y || 10 || . || . ||
 * . || Take-away shops || Y || 10 || . || . ||
 * . || Adults || Y || 10 || . || . ||
 * . || Left and right handed people || N || 10 || . || . ||
 * **Manufacture** || Basic processes || Y || 10 || . || Sheet metal lazer cut and formed in press. Handle and nut CNC machined ||
 * . || Batch production || Y || 10 || . || . ||
 * **Maintenance** || Must be easily cleaned || Y || 0 || . || Make the wheel removable ||
 * **Others** || Must be easily stored || N || 10 || . || . ||
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