ii)
Is it safe to use? Will the user cut himself if the triangular shaped object is too sharp?
Is the triangular part sharp enough to penetrate the orange's skin?
Is the triangular part long enough to penetrate through the orange's skin at the riht depth?
Is it easy to cut with the product? Is the cutting smooth?
Is the ring too big or small for the user's finger to pass through?
Is the materials used expensive? Is it long lasting?
Is the material used safe for allergy sufferers?
Is the colour used appropriate for the user? (Not too bright etc.)
Is the design attractive?
Is the weight of the product appropriate?
Is the product environmentally friendly?
Is this product elderly friendly/ child safe?
iii)
Yes. The elderly may cut himself/herself as the triangular part is quite sharp. The elderly may not have enough strength to let the triangular part penetrate the orange's skin. The elderly's fingers might not fit through the ring. The elderly might not know which direction to pull the slicer to cut the orange's skin as the triangular part is pointed to a certain direction that requires the user to slice the orange in a particular manner.
iv) There is a collapsible or expandable plastic part for different finger sizes so peoples with bigger fingers will expand the plastic part while peoples with smaller fingers will collapse the plastic part to adjust the size of the ring to suit his needs.
There is also a clip to store the plastic part when it is not in used, or collapsed.
At the triangular part which it is very sharp, there is a spring next to the triangular part, connected to a movable plastic circle. There is a hole in the circle for the triangular part to come out if the spring was compressed when the person was slicing the orange. If the person accidentally slipped, the spring will expand and make sure that the person does not get injured by the triangular part. The spring is also anti-rust, and will last for a long time.