Acrylic on acrylic hinge - friction? Answered
I'm building an articulated 'puppet' using 3mm acrylic sheet for the 'skeleton'
My hinges will be simple sandwiches of two outer and one inner piece, held together with a snap-together nylon rivet. The flat contact area is about half a square inch (see attached image). The 'puppet' will be controlled by tendons attached to gloves, so will only have the force of single fingers to move them. I need to know how smooth a joint this will be, before I start ordering nylon washers.
Anyone got experience of this sort of join? Will it be ok dry, or will a small amount of lubrication help? (petroleum jelly? liquid silcone?). Or do I need to commit to washers. Needs to be as frictionless as possible!