I've been asked to make a "blackout" for the window of a baby that wakes up at the first trace of morning sunlight. (They have blackout lined curtains, but they are looking for darkroom type performance).
In this case neatness and convenience is more important than cost.
Obviously it would not be difficult to make a simple wooden frame, covered with blackout material and held in place with magnets or velcro, but it struck me that square plastic tubing connected with corner pieces like Dexion Speed Frame should be quick and neat.
Googling finds plenty of plastic tube
but their corner connector prices are silly. Does anyone know of a supplier? (I know I could mitre or construct something like a cross halving using PVC solvent adhesive, but that seems like too much work).
As an alternative I am just thinking about a sheet of 3 or 5 mm black acrylic, again fixed with magnets or velcro.
Thoughts?