Historical Reconstruction
Preserving Historical Craftsmanship Through Research, Digital Reconstruction and Traditional Metalworking
Throughout history, Japanese sword fittings have represented far more than functional components.
A tsuba, fuchi-kashira, menuki, kozuka or complete koshirae may embody the artistic vision, technical mastery, cultural beliefs and personal expression of the artisan who created it. Together, these works preserve centuries of accumulated knowledge in metalwork, carving, patination and sword mounting.
Today, many historically significant examples survive in museums, institutional archives, auction records and private collections around the world. Their craftsmanship continues to inspire collectors and researchers, yet opportunities to study or experience these works closely are often limited.
TangGu’s Historical Reconstruction Studio is dedicated to studying, digitally reconstructing and handcrafting historically significant Japanese sword fittings and mountings through a combination of historical research, modern digital technology and traditional metalworking.
History Cannot Be Reproduced
It Can Be Studied, Respectfully Interpreted and Skillfully Reconstructed
Every reconstruction begins with research.
Historical objects are not treated simply as designs to be duplicated. Their proportions, decorative language, construction, materials, surface treatment and cultural context are first examined and interpreted.
This research is then translated into drawings and a newly developed three-dimensional digital model. From that model, each component is cast, refined, chased, engraved, polished, patinated and assembled by hand.
The finished work is an independently produced reconstruction—not the original object, and not a claim of perfect duplication. It is a new handcrafted piece created in respectful dialogue with the historical work that inspired it.
What Can Be Reconstructed
The studio undertakes projects involving a wide range of traditional Japanese sword fittings and mountings, including:
- Tsuba — sword guards
- Fuchi and kashira
- Menuki
- Kozuka
- Kogai
- Habaki
- Seppa and other mounting components
- Saya fittings
- Aikuchi mountings
- Complete koshirae
- Historical decorative metalwork
- Original bespoke fittings based on customer concepts
Projects may be developed from historical objects, museum collection records, auction archives, published research, private collections, customer-owned pieces or other lawfully supplied reference materials.
Each request is assessed individually before a project is accepted.
The Reconstruction Process
01 — Historical Research
Each project begins with the study of available historical information.
Sources may include museum collection records, academic publications, historical documentation, auction catalogues, antique examples, private collection records and customer-authorised materials.
Where sufficient information is available, attention is given to the object’s period, school, attributed maker, subject matter, construction, materials and known dimensions.
The depth and accuracy of a reconstruction will always depend upon the quality and completeness of the available reference material.
02 — Reference Analysis
Visible details are carefully examined, including:
- Overall proportions
- Relief depth
- Decorative composition
- Carving and engraving techniques
- Surface texture
- Edge treatment
- Component relationships
- Assembly requirements
- Signs of historical wear or patination
When dimensions are unavailable, proportions may need to be estimated from photographs or comparable historical examples. Any such interpretation forms part of the reconstruction process and may result in differences from the original object.
03 — Design Development
Research findings are translated into drawings suitable for digital reconstruction and production.
This stage establishes the composition, scale, structural relationships and technical requirements of each component while preserving the visual character of the historical reference.
Where necessary, minor adjustments may be introduced to improve fit, durability or compatibility with the intended sword mounting.
04 — Digital Reconstruction
Each component is independently rebuilt as a three-dimensional digital model using CAD-based modelling and digital sculpting.
The digital model is not produced by directly moulding the historical object. Instead, it is developed through reference analysis, artistic interpretation and engineering.
Digital reconstruction allows the proportions, relief, surface transitions and assembly relationships to be examined before production begins.
Where requested and technically practical, preview images may be supplied for customer review before manufacture.
05 — Technical Review
Before production, the digital model is reviewed for:
- Structural integrity
- Wall thickness
- Casting feasibility
- Assembly clearances
- Fit with the intended blade or mounting
- Finishing requirements
- Appropriate scale and balance
Historical appearance remains important, but the finished component must also function as a newly manufactured object.
06 — Lost-Wax Investment Casting
Following approval, components are produced using lost-wax investment casting.
This process provides a detailed metal foundation capable of retaining complex relief, sculptural forms and fine decorative features.
Casting is not treated as the final stage. It establishes the underlying form from which the handcrafted metalwork continues.
Material options may vary according to the project and can include suitable copper alloys, brass, cupronickel or other metals selected for the intended appearance and application.
07 — Hand Chasing and Surface Refinement
After casting, each component is individually refined by hand.
Casting seams are removed, contours are corrected and details are developed through techniques such as:
- Chasing
- Carving
- Engraving
- Filing
- Texturing
- Punch work
- Surface levelling
- Hand polishing
This stage restores depth, definition and artistic character that cannot be achieved through casting alone.
As each component is finished by hand, minor variations are natural and form part of the individuality of the completed work.
08 — Patination and Surface Finishing
Surface treatment is selected according to the artistic character of the project.
Depending on the materials and design, this may include controlled patination, polishing, antiquing, selective highlighting or contrasting surface finishes.
The aim is not to create artificial age or falsely present the work as an antique. Rather, the finish is developed to complement the historical design while clearly remaining part of a newly produced reconstruction.
09 — Assembly and Final Inspection
Completed fittings are checked for fit, alignment, finish and overall presentation.
For complete koshirae projects, the individual components are evaluated as part of the entire mounting rather than as isolated decorative objects.
Before completion, each project undergoes a final inspection to confirm that the approved design and agreed specifications have been followed.
Historically Informed, Individually Handcrafted
Historical reconstruction should not be confused with mechanical duplication.
A reconstruction developed from photographs, drawings and published records cannot always reproduce details that are hidden, undocumented or distorted by photography. Colours may also appear differently across museum images, auction photographs and digital displays.
For these reasons, every TangGu reconstruction should be understood as a historically informed interpretation, created as a new handcrafted work.
Exact identity with an original object cannot be guaranteed, and slight variations in carving, texture, dimensions, patination and finish are to be expected.
These variations are not necessarily defects. They reflect the interpretive and handcrafted nature of the process.
Reference Sources
Suitable projects may be based upon:
- Public-domain historical works
- Museum collection records
- Historical archives
- Academic publications
- Auction records and catalogues
- Antique examples
- Private collections
- Family collections
- Customer-owned objects
- Customer-created designs
- Licensed materials
- Customer-authorised reference materials
The submission of reference material does not automatically mean that a project will be accepted.
TangGu may request additional information regarding the object, its ownership, the source of the materials or the customer’s authority to commission the proposed work.
Selected Reconstruction Projects
The studio’s growing body of work explores different historical periods, schools, subjects and decorative traditions within Japanese sword metalwork.
Individual project pages may include:
- Historical background
- Available reference material
- Digital reconstruction images
- Work-in-progress photographs
- Casting and hand-finishing stages
- Material and finish specifications
- Final reconstruction photography
These pages are intended to document both the completed work and the research and craftsmanship behind its creation.
[View Selected Reconstruction Projects]
Respect for Intellectual Property
TangGu respects copyright, trademark, design rights and other intellectual property protections.
Suitable projects may include those based upon:
- Historical works in the public domain
- Customer-owned original designs
- Customer-authorised materials
- Properly licensed references
- Designs that may otherwise be lawfully used
The historical object depicted in a photograph may be in the public domain because of its age. However, a modern photograph, digital scan, catalogue, publication, drawing, three-dimensional model or database record relating to that object may remain protected.
The availability of an image online does not necessarily mean that it may be freely reproduced, distributed or used commercially.
Projects involving contemporary artworks, film or television props, game assets, branded products, modern artists’ designs or other protected intellectual property are reviewed individually. Evidence of permission or licensing may be required.
TangGu may decline any project where ownership, permission or lawful use cannot be reasonably established.
Unless expressly stated, TangGu does not claim affiliation with, endorsement by or authorisation from any museum, institution, production company, artist, estate, publisher or rights holder.
Museum and collection names may be used solely to identify the present location, historical provenance or published record of a referenced object.
Customer Responsibility
By submitting reference materials or commissioning a project, the customer confirms that:
- The customer owns the submitted materials, has permission to use them, or otherwise has the legal right to provide them for the requested purpose.
- The requested project does not knowingly infringe the intellectual property rights of another person or organisation.
- Any necessary permissions, licences or consents have been obtained before production begins.
- The customer has disclosed whether the request is connected with a film, television programme, game, commercial brand, contemporary artist or other protected property.
- The customer understands that TangGu may request supporting evidence or decline the project where the legal position remains unclear.
Customer declarations do not require TangGu to accept a project that presents an unacceptable legal, ethical, reputational or technical risk.
Begin a Reconstruction Project
Historical reconstruction is offered through consultation rather than immediate online purchase.
Step 1 — Submit the Project
Provide available photographs, links, dimensions, historical information and a description of the intended use.
Step 2 — Historical and Technical Review
The available references are assessed for completeness, production feasibility, intellectual property concerns and likely reconstruction accuracy.
Step 3 — Project Proposal and Quotation
The proposed scope, components, materials, finish, estimated production time and pricing are discussed.
Any major limitations in the available references will be identified before production.
Step 4 — Design Development and Confirmation
Drawings or digital reconstruction previews are prepared where included within the agreed project scope.
Production begins only after the required design and commercial terms have been approved.
Step 5 — Handcrafted Production
The project proceeds through casting, hand refinement, surface finishing, assembly and final inspection.
[Submit a Reconstruction Enquiry]
Frequently Asked Questions
Can an exact replica be produced?
An exact or indistinguishable duplicate cannot be guaranteed.
Every project is independently reconstructed from the available references and produced as a new handcrafted work. Differences may result from incomplete documentation, photographic distortion, material selection, production requirements and hand finishing.
The service is best understood as historical reconstruction rather than exact mechanical replication.
Can museum-held objects be reconstructed?
Potentially, yes.
A historical object may be suitable for reconstruction when the underlying work is in the public domain and the reference materials can be lawfully used.
The legal status of the historical object and the legal status of the museum’s photographs, scans or publications are separate matters. Each project is therefore reviewed individually.
Is a museum’s permission always required?
Not necessarily.
Permission may not be required merely because a historical object is currently held by a museum. However, permission or a licence may be necessary to use museum-owned photographs, scans, three-dimensional data, branding or other protected materials.
No project will be described as an official, authorised or museum-approved reproduction unless formal authorisation has been obtained.
Can film, television or game props be reconstructed?
Only where the proposed work can be lawfully produced.
Contemporary props and entertainment designs may be protected by copyright, design rights, trademarks or contractual restrictions. The customer may be asked to provide evidence of authorisation from the relevant rights holder.
Projects without adequate permission may be declined.
Can contemporary artworks or modern sword fittings be reproduced?
Only where the artist’s rights have expired, the design is lawfully available for use, or the necessary permission has been obtained.
The fact that an object has been publicly displayed, sold at auction or posted online does not automatically permit commercial reproduction.
Can antique sword fittings be reconstructed?
Yes, subject to review.
Many antique fittings are based on historical works that may now be in the public domain. However, the available reference images and documentation must still be assessed separately.
Is three-dimensional scanning used?
The standard workflow is based on reference analysis and independently developed digital reconstruction rather than direct scanning or moulding of an original historical object.
Where a customer owns an object and proposes supplying authorised three-dimensional data, the project would require separate technical and legal review.
Can a customer supply only photographs?
Yes, although reconstruction accuracy will depend on the number, quality and angles of the photographs.
Clear front, back, side and detail images are strongly preferred. Known dimensions, material information and photographs taken without strong perspective distortion are also valuable.
Where important details are not visible, they may need to be interpreted or redesigned.
Can original designs also be commissioned?
Yes.
The studio also accepts original bespoke projects inspired by traditional Japanese metalworking, provided that the proposed design can be lawfully and technically produced.
Will the completed work look antique?
A historically appropriate patina or aged visual character may be created where suitable.
However, newly produced work will not be falsely represented as an original antique, historical artefact or work by the original artisan.
Our Commitment
Historical craftsmanship cannot be preserved through storage alone.
Its techniques must continue to be studied.
Its materials must continue to be understood.
Its artistic language must continue to be practised.
Its spirit must continue to inspire.
Every TangGu reconstruction represents the combined work of historical research, digital craftsmanship, metal casting, hand chasing, surface finishing and careful assembly.
The purpose is not to erase the distinction between past and present.
It is to create a new work that honours the skill, imagination and cultural legacy of the artisans who came before.