Hand machined. Stainless sheet, delrin, , bronze, anodized aluminum, tool steel. depending on feel. Watch here for progress on custom dark slides for Mamiya RB67. Outline Live ProjectsArduino Bullseye Level Bridgeport Series 1 12x34 CNC Mill Project CNC + 3d Printer + Laser Cutter/Engraver Cistern Bench - 'Aware' Fireplace Hearth, Surround + Andirons Hardinge DSM-59 Turret Lathe Mamiya RB67 Dark Slide Milk Frother Cap Fab NASA Jewelry Line Popup TV Range Hood Responsive Lighting ( Anti-Vegas ) Sheet Metal Brake TouchDRO Toughened Shop Variable Voltage Power Supply UCB Staff ‹ Hardinge DSM-59 Turret Lathe up Milk Frother Cap Fab ›