What is the mechanical engineering behind this? Did you do all the calcs? Simulate it in CAD or something? Gas struts need to be tuned to the weight you are counter balancing; are you selling or recommending a particular mattress with this? How much resistance do the gas struts provide at the top of the stroke, what happens if you drop it at 3/4 raised? Do you need to fix this back to the wall or floor; i.e. could the whole thing topple over on top of you if it jammed while you were lowering it? Can you see all the parts where childrens fingers might get caught from the raising lowering position? The desk pantograph mechanism has quite slender struts, they look like they could be quite easily damaged.
Most double beds have a central beam under the slats and a lot more slats than this. Why is yours different?
In general, it's one thing to use your own prototype where you have an intuitive understanding of its weaknesses, but when other people use it they will break things you wouldn't expect. Will it fail safe?
It looks terrible, some bits of structure look too big and some too small. There are parts of the design where the same problem has been solved with a different solution, why isn't it symmetrical?
$650 Including all labour? Seems too cheap. Are you expecting people to build this out of construction grade timber like the prototype?
What is the mechanical engineering behind this? Did you do all the calcs? Simulate it in CAD or something? Gas struts need to be tuned to the weight you are counter balancing; are you selling or recommending a particular mattress with this? How much resistance do the gas struts provide at the top of the stroke, what happens if you drop it at 3/4 raised? Do you need to fix this back to the wall or floor; i.e. could the whole thing topple over on top of you if it jammed while you were lowering it? Can you see all the parts where childrens fingers might get caught from the raising lowering position? The desk pantograph mechanism has quite slender struts, they look like they could be quite easily damaged.
Most double beds have a central beam under the slats and a lot more slats than this. Why is yours different?
In general, it's one thing to use your own prototype where you have an intuitive understanding of its weaknesses, but when other people use it they will break things you wouldn't expect. Will it fail safe?
It looks terrible, some bits of structure look too big and some too small. There are parts of the design where the same problem has been solved with a different solution, why isn't it symmetrical?
$650 Including all labour? Seems too cheap. Are you expecting people to build this out of construction grade timber like the prototype?