BS–2

Two mirrored plates of bent anodized aluminum, bolted together through an acrylic bar with M8 set screws and cap nuts.

Sized for A5 books, and it will take a thick one. Each side is a single folded sheet of metal — the fold is the structure, so there is no frame.

• Adjustable acrylic bar × 2
• M8 socket set screw, 25mm × 2
• M8 cap nut × 4
• Bent-formed anodized aluminum plate × 2, mirrored

1. The two plates mirror each other and meet along a seam.
2. An acrylic bar spans that seam; an M8 set screw passes through both plates and the bar.
3. Cap nuts go on the outside, and the screws are tightened to hold the pair as one piece.

For a thicker book, add more bars; each one makes more room.