3D Roof Model Preparation for Large-Scale Printing

Job ID: 40593983

Budget: $25 – $75 USD

NOTE: This is not a rendering project. We need a CAD/mesh specialist who can repair or rebuild disconnected structural geometry and deliver watertight, print-ready STL files with fully solid beams.

Project Brief: Prepare Structural Roof Model for 3D Printing

Project Title
Urgent Preparation of Revit/AutoCAD Structural Roof Model for Large-Scale 3D Printing

Project Overview
We have an architectural model available in both Autodesk Revit and AutoCAD 3D formats.

The model consists mainly of:
Curved structural beams
Secondary truss and support members
Roof sheet or roof surface
Supporting bases

The existing files were not originally prepared for 3D printing. The structural elements are not properly connected, and parts of the model are currently represented as disconnected meshes, surfaces, blocks, or hollow members.

The model must be repaired and, where necessary, partially remodelled to produce a strong, printable 3D model while preserving the original architectural appearance.

Critical Requirement: Solid Structural Beams
All structural beams, trusses, tubes, and support members must be created as fully solid geometry.

The final model must contain:
No hollow beams
No hollow tubes
No hollow internal structural members
No open-ended beam profiles
No thin surface-only representations of structural members

Each beam or structural member must have a completely filled cross-section suitable for FDM 3D printing.

The roof sheet may remain a shell with controlled thickness, but all supporting beams and structural members must be solid.

Scope of Work
The freelancer will be responsible for:

Reviewing both the Revit and AutoCAD 3D files and selecting the most suitable source file.
Repairing or rebuilding disconnected beams, trusses, and structural members.
Converting all beams and supporting structures into solid, non-hollow geometry.
Properly connecting all intersecting structural members.
Repairing gaps between:
Main beams and secondary members
Truss members
Roof and supporting structure
Structural members and supporting bases
Thickening beams where required to ensure that they remain strong and printable.
Giving the roof sheet a suitable physical thickness.

Removing:
Floating geometry
Duplicate elements
Overlapping faces
Internal unwanted surfaces
Non-manifold geometry
Open edges
Unconnected mesh elements
Producing a fully watertight final model.
Dividing the model into practical printing sections if required due to its approximate 140 × 50 cm physical size.
Designing clean connection points between separate sections where required.
Checking the completed model in slicing software before delivery.
Permitted Redesign

The original architectural design and external appearance must be maintained.

However, controlled redesign or reconstruction is permitted where technically necessary to:
Connect structural members
Replace unusable mesh geometry
Convert hollow beams into solid members
Increase the thickness of fragile elements
Strengthen connection points
Prepare the roof for printing
Split the model into printable sections
Create assembly joints
Make the geometry watertight

Any major visible design change should be approved before implementation.

Printing and Assembly Requirements
The model is intended for FDM 3D printing.

The freelancer should prepare the model based on the actual printer build volume and recommend the most suitable division strategy.

Where the model must be separated, the freelancer should include suitable assembly features such as:
Alignment pins
Male and female connectors
Sleeves
Slots
Internal locating joints
Clearly numbered sections

The connections should make assembly straightforward while minimizing visible seams.

The model should not simply be cut into sections without alignment or assembly consideration.

Geometry Requirements
The completed model must:
Use millimetres as the working and export unit
Maintain the correct architectural proportions
Have an approximate assembled size of 140 cm × 50 cm
Include solid beams and solid structural members
Have no hollow structural elements
Have no open surfaces
Have no floating objects
Have no non-manifold edges
Have no intersecting or duplicate internal faces
Be watertight
Be suitable for slicing and FDM printing
Maintain sufficient strength for handling and assembly
Roof Sheet Requirements

The roof sheet should:
Maintain the original curved shape
Have actual printable thickness
Be properly connected or positioned relative to the supporting structure
Be divided into suitable sections if required
Not remain as a zero-thickness surface
Be printable without losing the intended architectural form

The freelancer should propose a suitable roof thickness based on the final model size and printing method.

Deliverables
The freelancer must provide:
Print-ready STL files
Separate and clearly named by section where applicable
Correctly oriented where practical
Using millimetres
Complete assembled STL or reference model
Showing how all sections fit together
Editable source file, preferably in one or more of the following formats:
Revit
AutoCAD DWG
STEP
Fusion 360
Rhino
Blender

Slicer validation screenshots showing:
Successful slicing
Final overall dimensions
All beams visible
No missing structural members
No geometry errors
Proposed print orientation
Assembly reference
Numbered parts
Simple assembly diagram or screenshots
Identification of connection points

Brief work summary stating:
Which elements were rebuilt
Which beams were thickened
How hollow members were converted to solid members
How the model was divided
Final model dimensions
Any recommended printing settings or precautions

Acceptance Criteria
The work will be accepted when:
The original architectural form is maintained.
The assembled model is approximately 140 cm long and 50 cm wide.
All beams and structural members are fully solid.
There are no hollow tubes or hollow supporting structures.
All required structural members are properly connected.
The roof has a suitable printable thickness.
The model is watertight.
All sections successfully open and slice in standard slicing software.
No essential beams disappear in the slicer preview.
The divided parts include practical alignment or assembly features.
The final files are ready for FDM 3D printing.

Deadline
This is an urgent project.
The complete print-ready files must be delivered within a maximum of:

5 hours from confirmation and receipt of the Revit and AutoCAD files.

Please apply only if you:
Can begin immediately
Have experience preparing architectural structures for 3D printing
Can repair or rebuild complex structural geometry
Can deliver within the five-hour deadline
Information Required from the Freelancer

Please provide:
Confirmation that you can start immediately
Confirmation that you can deliver within five hours
Your fixed price
Software you will use
Examples of similar architectural or structural models prepared for 3D printing
Your proposed method for dividing and assembling a 140 cm model
Confirmation that all beams will be fully solid, not hollow
Short Freelance Job Post

Urgent: Prepare Revit/AutoCAD Structural Roof Model for 3D Printing — Five-Hour Deadline

We need an experienced CAD and 3D-printing specialist to repair and prepare an architectural structural roof model for FDM 3D printing.

The files are available in Revit and AutoCAD 3D. The model includes curved beams, truss members, a roof sheet, and supporting bases. The existing structure contains disconnected geometry, polyface meshes, open surfaces, and hollow or unsuitable structural members.

Key requirements
Final assembled size is approximately 140 cm long × 50 cm wide
All beams, tubes, trusses, and supporting members must be fully solid
No hollow structural members are permitted
Repair or rebuild disconnected structure as required
Give the roof sheet proper printable thickness
Produce watertight, manifold geometry
Divide the model into practical printable sections
Add suitable alignment or assembly joints
Preserve the original architectural appearance
Validate all parts in slicing software
Deliverables
Print-ready STL files
Editable source file
Complete assembled reference model
Slicer screenshots confirming dimensions and successful slicing
Numbered assembly reference
Brief summary of modifications

Deadline: Five hours maximum from receiving the source files.

Please apply only if you can start immediately and complete the project within the deadline. Include your fixed price, software, relevant examples, and confirmation that all structural beams will be solid rather than hollow.