... by Magnets in corner Acrylic photo frame,crystal photo frame.square photo frame,glass photo frame,plastic photo frame,picture frameMaterial: Acrylic sheet; PMMA sheet; Plastic board; Organic glassColour: transparent, white, milk, red, blue ... but coarse thread is preferred,with brass screw.Lathe work: The lathe for metal processing is suitable for acrylic plate; the sanding and ...