What type of hinge could I use for cupboard doors lifting upwards not more than 90 degrees?
well the best solution is a piece of string and a hook screw the hook into the ceiling drill a hole in the door and loop the string through when you want to hold the door open simply put the string onto the hook, ta dah the poorer solution is a piece of wood or metal cut it to length and jam it in the hole when you wish to keep the door open. when you have finished simply knock the wood out of the way alternatives are get a friend to hold the door whilst you access the aforementioned space, simply asking them to release the door will allow its closure under the influence of gravitational force, i am making the presumption that you are on earth and not in a 0 g environment leave the doors off, access is easily gained under this condition use sliding doors cut a hatch in the ceiling so that when you wish to open the door the hatch is also lifted.
