CAD & Prototyping
Hollow Jewellery Design: Planning Openings, Joins and Finishing Access
Hollow jewellery design for manufacture needs more than an outer silhouette.
Hollow jewellery design for manufacture needs more than an outer silhouette. The internal space, wall arrangement, joins and openings affect how the piece can be made and finished. A convincing render can leave all of those questions unresolved.
This is a design-brief discussion rather than a set of universal wall thicknesses. The proposed metal, size and production route need to be reviewed together by the specialists responsible for the work.
Discuss a trade workshop job
Planning manufacturing and production work? Apply for a trade account or call the workshop to discuss the brief.
Show the inside as well as the outside
Provide section views that explain the cavity and changes in wall thickness. Identify separate shells, caps or fittings rather than letting a shaded render suggest a single solid part. Make clear which surfaces will remain visible or accessible in the completed item.
If a physical reference is used, do not assume that its outer dimensions reveal its internal construction. Scanning or measuring the accessible surface may leave important information unknown.
Plan the assembly route
Discuss how the parts will be joined and which openings are needed at each stage. The workshop should assess access and the sequence before the design is released. A join hidden in the final view can still influence the practical manufacturing route.
Keep any changes to the outer form subject to approval. Moving a seam or adding an opening may solve a production problem while altering the appearance the client expects.
Confirm the scope before work starts
Supply the relevant photographs, measurements and known material details. Ask the workshop to assess the proposed work.
Define finishing and cleaning access
Identify where polishing tools or cleaning processes need access, and what will become inaccessible after assembly. Ask the workshop how residues and internal condition will be addressed for the actual construction. Do not assume the finished outside proves the interior is suitable.
The CAD wall-thickness guide supports the discussion of remaining material. Avoid selecting a thin wall simply to meet a target weight without assessing the complete design.
Give the sample a specific purpose
Use a representative sample to review the questions that matter, such as construction, feel, attachment behaviour and the appearance of joins. Record differences between the sample and intended production materials or methods.
An appearance-only prototype cannot establish all properties of the final shell. Identify which decisions it supports and which require further assessment before a repeat run is authorised.
Approve a complete construction
Release the internal and external references together. Future orders and repairs become easier to assess when the record explains how the piece was made, rather than preserving only its outward shape.
Bring a clear brief to the workshop
For trade enquiries, apply for an account or call A&M to discuss the next step.
Frequently asked questions
Is hollow construction always unsuitable for repair?
No general conclusion follows from the word hollow. Access, condition and remaining material need assessment for the particular piece and proposed repair.
Can a target weight determine the wall thickness?
It is only one design consideration. The workshop must also assess manufacture, construction and the intended use before a thickness is approved.
Related reading
- Wall Thickness in Jewellery CAD: What to Discuss Before Production
- Repairing Hollow Jewellery: What a Retailer Should Explain
- Jewellery Prototyping: What a Physical Sample Can Reveal
For service details, see manufacturing and production at A&M.