Sony A7 IV Arca-Swiss plate with anti-twist lip
A camera-specific Arca-Swiss plate for the Sony A7 IV, A7R V and A7C II that cannot rotate on the 1/4-20 tripod socket because a 4 mm lip hooks the rear edge of the body. The dovetail is the standard 38 mm wide profile with 45 degree flanks, 90 mm long so it sits in a Peak Design, SmallRig or Manfrotto Arca clamp, and a 6.5 mm slotted hole lets the 1/4-20 screw sit exactly under the lens axis. The plate is 10 mm thick with a 12 mm relief so the battery door on the underside still opens and a Peak Design Anchor slot at the front. Print it flat in PETG or carbon-fibre nylon with 100 percent infill.
Metal plates for the A7 IV cost as much as a filter and still spin. In SpeakCAD you describe your body, its socket offset and clamp type, preview the plate in the browser without paying, add a strap slot in the chat and download the STL.
Design an Arca-Swiss camera plate for a Sony A7 IV 90 x 38 x 10 mm with 45 degree dovetail flanks, a 6.5 x 15 mm slotted hole for a 1/4-20 screw, a 4 mm anti-twist lip along the rear edge, a 12 mm battery door relief underneath and a 4 mm Peak Design Anchor slot at the front.