Brackets and mounts
Bass Tagelharpa – Exploded Multi‑Part Model
- Bounding box
- 993.5 × 876.0 × 66.0 mm
- Engine
- Precision B-rep
- Parameters
- 21
- Published
- August 7, 2026
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The prompt
Below is a concise, precision-focused design prompt ready to give to a CAD AI or 3D modeler to generate a CNC-ready file. CAD Design Brief: 3-String Bass Tagelharpa (HavocHarpa Style) Objective: Design a 3D CAD model of a 3-string Bass Tagelharpa body shell optimized for 3-axis CNC routing out of a single piece of hardwood, with a separate soundboard top plate. 1. Primary Geometry & Dimensions Overall Length: 876 mm Scale Length (Nut to Bridge): 546 mm Overall Body Depth: 69 mm Body Minimum Width: 208.5 mm Playing Window Length: 293 mm Playing Window Width: 108 mm Neck Thickness: 35 mm Headstock Width: 158 mm (dimensioned to fit 3 modern enclosed bass guitar tuners with 36 mm peg spacing) 2. Internal Cavity & Structural Rules (CNC Body Shell) Perimeter Wall Thickness: 7 mm throughout the main body cavity. Tailpiece Anchor Block: 18 mm wall thickness at the bottom (base) of the body to support tailgut tension. Neck/Headstock Transition: Solid integrated neck block; include 35 mm x 4 mm side notches at the headstock transition for structural reinforcement plates. Floor/Back Thickness: Solid integrated back plate, continuous with the routed side walls. Soundboard Lip/Rebate: Step-routed internal ledge along the top rim to recess a separate 3.0 mm flat soundboard flush with the outer body edge. 3. Components & Accessories (Separate CAD Bodies) Soundboard (Top Plate): Thickness: 3.0 mm Includes a integrated/glued internal Bass Bar on the underside (8 mm wide x 10 mm high, tapered at ends, running 1/3 the length of the soundboard under the bass string side). Includes circular soundhole cutout (50 mm diameter, centered at 455 mm from top). Bridge: Width: 69.5 mm String spacing: 22.7 mm (centers) across 3 strings. Profile: Low-height quarter-sawn maple style with thick feet and moderate heart cutouts. Tailpiece: Length: 98 mm | Top Width: 68 mm | Bottom Width: 48 mm | Thickness: 6 mm Includes mounting holes for paracord tailgut anchoring. 4. Manufacturing Constraints & Output Formats Machining Type: 3-axis CNC router from top/front face stock. Fillets/Radii: Internal cavity corners rounded to minimum 6.35 mm (1/4" endmill clearance). Required Output Files: STEP / IGES (3D solid model) and 2D DXF vector exports of individual components.
Parameters
| Name | Value | Range |
|---|---|---|
| Overall Length | 876 mm | 800 – 1000 |
| Min. Width | 208.5 mm | 180 – 250 |
| Body Depth | 69 mm | 60 – 80 |
| Neck Thickness | 35 mm | 25 – 45 |
| Tailpiece Anchor Block | 18 mm | 10 – 25 |
| Cavity Wall Thickness | 7 mm | 5 – 10 |
| Neck Start (Y from bottom) | 380 mm | 300 – 500 |
| Soundboard Thickness | 3 mm | 2 – 5 |
| Soundhole Diameter | 50 mm | 30 – 80 |
| Soundhole Center Y | 421 mm | 300 – 500 |
| Bass Bar Width | 8 mm | 5 – 12 |
| Bass Bar Height | 10 mm | 6 – 15 |
| Bridge Width | 69.5 mm | 50 – 90 |
| Bridge Length (Y) | 25 mm | 15 – 40 |
| Bridge Height | 12 mm | 8 – 20 |
| Tailpiece Length | 98 mm | 80 – 120 |
| Tailpiece Top Width | 68 mm | 50 – 90 |
| Tailpiece Bottom Width | 48 mm | 30 – 70 |
| Tailpiece Thickness | 6 mm | 4 – 10 |
| Mounting Hole Dia | 4 mm | 2 – 8 |
| Layout Gap | 100 mm | 50 – 300 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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