Toothbrush design: stainless steel handle refinement + injection-molded replaceable head (3D CAD + DFM) Anyone

About the job

We are an Indian oral-care brand developing a premium manual toothbrush with a stainless steel handle and a replaceable brush head. A first version of the handle is already designed and made in India. We now need a designer to refine it and to design the replaceable head and the fitting between them, as one coherent product.

Scope

1. Handle refinement
- Review our existing handle and improve the shape, grip and ergonomics, and the overall look. Changes should be tweaks to the current design, not a ground-up redesign
- Design the head-socket end of the handle to match the new connector
- Target handle weight about 65g, grade 304 stainless steel
- Finish options (brushed / polished / matte) and any simple grip or branding details, kept easy to manufacture
- Design for manufacturing in stainless steel: wall thickness, forming/machining method, tolerances. We will tell you the process used by our handle maker, and you will work with their feedback

2. Replaceable head (2 sizes)
- Design two head sizes (e.g. standard and compact), each in 3D CAD (SolidWorks / Fusion 360 / NX or similar)
- Bristle layout, tuft hole pattern and neck design, with ergonomic input
- Design for injection molding (DFM): draft, wall thickness, parting lines, gates, ejection. Advise on the tufting method and material for nylon-bristle heads

3. Connector / fitting
- Design the interface between head and handle: secure, easy to replace, mass-producible with realistic tolerances in both st... read more
We are an Indian oral-care brand developing a premium manual toothbrush with a stainless steel handle and a replaceable brush head. A first version of the handle is already designed and made in India. We now need a designer to refine it and to design the replaceable head and the fitting between them, as one coherent product.

Scope

1. Handle refinement
- Review our existing handle and improve the shape, grip and ergonomics, and the overall look. Changes should be tweaks to the current design, not a ground-up redesign
- Design the head-socket end of the handle to match the new connector
- Target handle weight about 65g, grade 304 stainless steel
- Finish options (brushed / polished / matte) and any simple grip or branding details, kept easy to manufacture
- Design for manufacturing in stainless steel: wall thickness, forming/machining method, tolerances. We will tell you the process used by our handle maker, and you will work with their feedback

2. Replaceable head (2 sizes)
- Design two head sizes (e.g. standard and compact), each in 3D CAD (SolidWorks / Fusion 360 / NX or similar)
- Bristle layout, tuft hole pattern and neck design, with ergonomic input
- Design for injection molding (DFM): draft, wall thickness, parting lines, gates, ejection. Advise on the tufting method and material for nylon-bristle heads

3. Connector / fitting
- Design the interface between head and handle: secure, easy to replace, mass-producible with realistic tolerances in both steel and plastic

Deliverables
- Native CAD and STEP files for the handle, both heads and the connector, plus the assembly
- 2D drawings with tolerances, and a basic DFM report for both materials
- Rendered images of the final design (KeyShot or similar) for our team review
- 3D-printed prototype fit-check support, so we can test the heads on an actual handle
- Files must pass review by our mold maker and handle manufacturer

Requirements
- Proven experience in injection-molded consumer products AND metal parts. Toothbrush, personal-care or similar is a big plus
- Please share portfolio work and your usual software
- Comfortable iterating with manufacturers' feedback
- Must sign an NDA. Our handle files and drawings will be shared only after that
- We will own all IP and design files on delivery (work-for-hire / IP assignment)

Please include in your proposal: your fixed price (or hourly rate), timeline for concept, first CAD and final files, and 1-2 similar projects you've done. read less
We are an Indian oral-care brand developing a premium manual toothbrush with a stainless steel handle and a replaceable brush head. A first version of the handle is already designed and made in India. We now need a designer to refine it and to design the replaceable head and the fitting between them, as one coherent product.

Scope

1. Handle refinement
- Review our existing handle and improv... read more
We are an Indian oral-care brand developing a premium manual toothbrush with a stainless steel handle and a replaceable brush head. A first version of the handle is already designed and made in India. We now need a designer to refine it and to design the replaceable head and the fitting between them, as one coherent product.

Scope

1. Handle refinement
- Review our existing handle and improve the shape, grip and ergonomics, and the overall look. Changes should be tweaks to the current design, not a ground-up redesign
- Design the head-socket end of the handle to match the new connector
- Target handle weight about 65g, grade 304 stainless steel
- Finish options (brushed / polished / matte) and any simple grip or branding details, kept easy to manufacture
- Design for manufacturing in stainless steel: wall thickness, forming/machining method, tolerances. We will tell you the process used by our handle maker, and you will work with their feedback

2. Replaceable head (2 sizes)
- Design two head sizes (e.g. standard and compact), each in 3D CAD (SolidWorks / Fusion 360 / NX or similar)
- Bristle layout, tuft hole pattern and neck design, with ergonomic input
- Design for injection molding (DFM): draft, wall thickness, parting lines, gates, ejection. Advise on the tufting method and material for nylon-bristle heads

3. Connector / fitting
- Design the interface between head and handle: secure, easy to replace, mass-producible with realistic tolerances in both steel and plastic

Deliverables
- Native CAD and STEP files for the handle, both heads and the connector, plus the assembly
- 2D drawings with tolerances, and a basic DFM report for both materials
- Rendered images of the final design (KeyShot or similar) for our team review
- 3D-printed prototype fit-check support, so we can test the heads on an actual handle
- Files must pass review by our mold maker and handle manufacturer

Requirements
- Proven experience in injection-molded consumer products AND metal parts. Toothbrush, personal-care or similar is a big plus
- Please share portfolio work and your usual software
- Comfortable iterating with manufacturers' feedback
- Must sign an NDA. Our handle files and drawings will be shared only after that
- We will own all IP and design files on delivery (work-for-hire / IP assignment)

Please include in your proposal: your fixed price (or hourly rate), timeline for concept, first CAD and final files, and 1-2 similar projects you've done. read less
Toothbrush-Stainless-Steel-Reusable-Toothbrush-02.jpg jpg Nov 14, 2026
Toothbrush-Stainless-Steel-Reusable-Toothbrush-03.jpeg jpeg Nov 14, 2026
Toothbrush-Stainless-Steel-Reusable-Toothbrush-thumbnail-01.jpg jpg Nov 14, 2026

Things to know

Job location

Remote

Work location

Job skill level

Any

Skill Level

Job rate

$1,000

Fixed-rate (USD)

Job type

Part-time

Job type

Job length

Under 1-month

Job duration

Areas of expertise

2D Technical Drawings 3D Assembly Design 3D Mechanical Design 3D Part Modeling 3D Product Design Adobe Creative Suite Fabrication Fusion 360 Luxion KeyShot Plastic Design Plastic Product Design Rapid Prototyping Solidworks +10 more

Job categories

Industrial Design Services Product Engineering Services Mechanical CAD Design Injection Molding Design Design for Manufacturability (DFM Services) +2 more

About the client

Payment not ready

India (12:10 am)

Posted

Active

Job activity

20 Applicants

0 interviews in progress

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