Clamping Music Stand for OnStage Keyboard Stand

OnStage-attached Heavy-Duty Sheet Music Stand for my Roland Fantom-G8 OrcaSlicer & Prusa CORE One Print Guide (Generated with my direction and review with Gemini 4 Argon and OnShape, November 2026) 1. Global OrcaSlicer Settings - Printer Profile: Prusa CORE One (250 x 220 x 270 mm build volume)

- Materials: - PETG (required for Part 4 compliant springs and Part 5 T-handle detent pins), recommended for the Part 1A and 1B clamps (At least Part 1A if PETG supply is limited)

- PLA+ / Tough PLA. (Required for part 2 Riser Stem, Parts 3A and 3B desk pieces), recommended parts 4B1 and 4B2 Pivoting Batwing Assembly (to keep the batwing paddle rigid)

- Layer Height: 0.20 mm (0.4 mm nozzle)

- Wall Loops (Perimeters): 8 walls (critical for clamping force and cantilever stiffness)

- Top / Bottom Shell Layers: 8 Top / 8 Bottom

- Infill Density & Pattern: 40% Cubic or Gyroid

- Brim: 5 mm Outer Brim enabled for long or tall parts (Part 1B, Part 2, Part 3A, Part 3B)

2. Prusa CORE One Bed Fit & Orientation Adjustments The Prusa CORE One build plate is 250 x 220 mm (X x Y) with a 270 mm Z-height. Two parts exceed standard single-axis bed dimensions and require diagonal Z-rotation (R key in OrcaSlicer): - Part 2 (293 mm Riser Stem): Exceeds the 250 mm X-axis and 270 mm Z-axis. Lay it flat on its side and rotate it 41.1 degrees diagonally across the bed.

- Part 3A & Part 3B (240 mm Wide Desks): Fit along the 250 mm X-axis, or can be rotated 30 to 45 degrees diagonally for wider skirt/brim margins.

3. Part-by-Part Orientation & Support Use the Lay on Face (F) tool in OrcaSlicer to place the specified face directly onto the PEI build plate. - Part 1A: Clamp Front Jaw - Face on Build Plate: Flat Front Face (outer face with screw counterbores)

- Bed Rotation (Z): 0 deg

- Supports: None

- Notes: Wraps perimeter loops around the tube cutout; prints bolt holes cleanly.

- Part 1B: L-Clamp Rear Jaw - Face on Build Plate: Left or Right Side Face (X-normal side of the L-arm)

- Bed Rotation (Z): 45 deg

- Supports: Yes (Normal, On build plate only)

- Notes: Aligns continuous filament strands from the clamp jaws straight down the 50x45 mm arm and up the riser peg.

- Part 2: 293 mm Riser Stem - Face on Build Plate: left or right side face

- Bed Rotation (Z): 41.1 deg (Diagonal)

- Supports: Yes (Normal, On build plate only)

- Notes: Prevents layer-line snapping under forward book weight; keeps the 38 mm male dovetail layers longitudinal.

- Part 3A: Lower Music Desk - Face on Build Plate: Flat Bottom Face (Z = 0 underside of the 8 mm book shelf)

- Bed Rotation (Z): 0 deg (along X) or 35 deg

- Supports: Yes (Tree/Organic, On build plate only)

- Notes: Keeps both vertical female dovetails upright for smooth sliding; supports only the 15-deg angled rear overhang.

- Part 3B: Upper Sliding Desk - Face on Build Plate: Flat Top Edge (Flipped 180 deg upside-down onto Z = 190 mm top edge)

- Bed Rotation (Z): 0 deg (along X) or 35 deg

- Supports: Yes, (Tree/Organic, On build plate only)

- Notes: Eliminates the 130 mm mid-air overhang of the upper plate; vertical runners point straight up.