Mechanical Engineering • CAD • Manufacturing Documentation
Mechanical Drafting Services
2D drafting, 3D CAD modelling and manufacturing documentation for machine builders, fabricators, product designers and manufacturers across India.
2D CAD3D ModellingManufacturing DrawingsReverse Engineering
When drafting workload grows faster than your engineering team
Manufacturing and engineering teams often need drafting capacity without carrying a full-time draftsperson — a concept sketch that has to become a manufacturable assembly, a legacy part with no digital model anywhere in the business, or a run of fabrication drawings that needs to reach the workshop floor this week.
Internal engineers are usually better used on design decisions, tolerance stack-ups and supplier negotiations than on redlining GA drawings or rebuilding a BOM that changed again. That mismatch between engineering time and drafting workload is the gap this service is built to close.
01
Design Intent
Sketches, existing models, redlines or reference material.
02
Drafting Workload
GA drawings, production drawings, BOMs and documentation.
03
Production-Ready Output
Organised files ready for engineering, fabrication or manufacturing workflows.
What This Service Covers
Our mechanical drafting service covers the full path from a design intent or rough sketch through to production-ready documentation. That includes 2D mechanical drafting for parts and assemblies, 3D CAD modelling for design validation and downstream use, and the manufacturing paperwork — fabrication drawings, assembly drawings, BOMs and revision-controlled drawing sets — that a workshop or fabricator actually works from when they pick up a job.
We work from your existing standards and title blocks where they exist, or set up a clean, consistent drawing standard where they don't. Models and drawings are delivered in the native format your team uses, so they slot into your existing CAD environment rather than sitting outside it as an orphaned file nobody can edit six months later. That matters more than it sounds — a beautifully drafted part that arrives in a format your team can't open or maintain is not actually useful documentation, it's a liability disguised as a deliverable.
- 1
Rough sketch
- 2
2D CAD
- 3
3D model
- 4
Assembly
- 5
BOM
- 6
Manufacturing drawings
- 7
Final documentation
2D Mechanical Drafting
2D mechanical drafting for parts and assemblies, dimensioned and toleranced to a working drawing standard rather than a generic default that ignores how the part is actually made.
We work from your existing standards and title blocks where they exist, or set up a clean, consistent drawing standard where they don't. Drawings arrive in the native format your team uses, so they slot into your CAD environment instead of sitting outside it as an orphaned file.
- Part drawings
- Assembly drawings
- GA drawings
- Dimensioning & tolerancing
- Native formats
3D CAD Modelling
3D CAD models for design validation and downstream use, built as solid and surface models in your native CAD format, with STEP and IGES neutral exports for supplier handover.
A 2D outline becomes a solid by extrusion, then picks up its features — boss, bore, holes and fillets — so the model can be checked, revised and used for drawings.
- Solid Modelling
- Surface Modelling
- Assembly Modelling
Documentation Built for the Workshop Floor
The paperwork is what a workshop or fabricator actually works from when they pick up a job: fabrication drawings, assembly drawings, BOMs and revision-controlled drawing sets, with material and finish called out where the part needs them.
A beautifully drafted part that arrives in a format your team can't open or maintain is not useful documentation — it's a liability disguised as a deliverable.
- Fabrication drawings
- Manufacturing drawings
- Assembly drawings
- BOMs
- GA drawings
- Material specifications
- Finish specifications
- Hardware schedules
Reverse Engineering & Legacy Part Documentation
This service also covers reverse engineering: producing an accurate 3D model and drawing set from a physical part, a legacy 2D drawing, or a scanned reference, for design changes, spare parts, or requalifying an undocumented component. Reverse engineering work is judged differently to greenfield design — the goal isn't to redesign the part, it's to capture what actually exists, including the tolerances and fits that made the original assembly work, so a replacement or modified version behaves identically in service.
01
Physical Part
02
Reference / Scan
03
3D CAD Model
04
Manufacturing Drawing
Sheet Metal Drafting & Flat Pattern Development
Sheet metal work is a large part of what comes through this service. Flat pattern development, bend allowance calculation and nesting-ready DXFs are only useful if they match how your press brake and material actually behave — a flat pattern that looks correct on screen but doesn't account for your shop's specific K-factor or tooling will cost you scrap and rework on the first run. We confirm these parameters with you (or use sensible defaults, clearly flagged, if they're not supplied) rather than guessing.
- Flat pattern development
- Bend allowance
- Nesting-ready DXFs
- K-factor
- Press-brake & tooling
Assembly Documentation That Stays Synchronized
Assembly documentation is treated as its own discipline, not an afterthought bolted onto part drawings. A BOM that doesn't match the model, or an assembly drawing that doesn't call out the fasteners a purchasing team actually needs to order, causes far more delay on a real production line than a slightly-off dimension on a single part. We build BOMs directly from the model structure so they stay synchronised as a design evolves, rather than maintaining a parallel spreadsheet that quietly drifts out of date.
- Assembly drawings
- BOMs
- Fasteners
- Hardware
- Component references
- Model-linked documentation
Bill of materials
Illustrative
Hover or focus a BOM row to highlight its component. Illustrative parts only.
Documentation That Makes Supplier Handover Easier
For teams running lean or contract manufacturing, we also handle the handover documentation a second supplier needs to pick up a part cold — clear revision history, material and finish call-outs, and drawings that don't assume tribal knowledge the original team had in their heads but never wrote down. That kind of documentation is what actually protects a design when the person who created it moves to a different project or a different company.
- Revision history
- Material call-outs
- Finish call-outs
- Clear drawings
- Reduced ambiguity
One of the more common quality failures we see in inherited drawing sets isn't a wrong dimension — it's an ambiguous one. A dimension with no clear datum reference, a note that says 'match existing' without specifying which existing, or a tolerance block that's technically present but doesn't actually reflect what the part needs to function, all create the same downstream problem: a fabricator has to guess, or call back to ask, and either outcome costs time. We draft with the fabricator's actual questions in mind, not just the geometric requirement.
How We Check Drawings
Drawing checking on our end isn't a single pass at the end — dimensions are cross-checked against source material as modelling proceeds, so an error gets caught while it's cheap to fix rather than after an entire drawing set has been built around a wrong assumption. This matters most on larger assemblies, where a single incorrect reference dimension early in the process can propagate into a dozen dependent drawings if it isn't caught immediately.
Drawings are checked for dimensional accuracy against source material, tolerancing logic, drawing-standard compliance and BOM consistency before anything is sent to you for review.
- Dimensions checked against source
- Tolerances checked
- BOM matches the model
- Drawing standard applied
- Revision history confirmed
What You Get
Everything is delivered in the native format your team uses, with neutral-format exports where a supplier needs them.
Drawings
- 2D mechanical drawings (part and assembly)
- Fabrication and manufacturing drawings
- GA (general arrangement) drawings
Models
- 3D CAD models (solid and surface)
- Reverse-engineered models from physical parts or legacy drawings
- STEP/IGES neutral format exports for supplier handover
Manufacturing
- Assembly drawings with BOMs
- Sheet metal flat patterns and nesting-ready DXFs
- Fastener and hardware schedules
Documentation
- Revision-controlled drawing sets
- Tolerance stack-up and fit documentation
- Material and finish specification sheets
Where Mechanical Drafting Is Used
Machine and equipment design
Product design and development
Sheet metal fabrication
Jigs, fixtures and tooling
Spare parts and legacy component documentation
Production and assembly line equipment
Custom fabrication and one-off builds
Contract manufacturing handover packages
Design changes to existing product lines
Prototype-to-production transition documentation
How It Works
01
Brief & reference material
You send sketches, existing models, redlines or physical parts, plus the standard you draft to and any constraints on tolerance, material or finish that matter for the part's function.
02
Scope & quote
We confirm deliverables, formats, drawing standard and turnaround before work starts, so there's no ambiguity about what 'done' looks like when the files land in your inbox.
03
Modelling & drafting
Models and drawings are built in your native CAD format, with dimensioning and tolerancing applied to a working drawing standard rather than a generic default that ignores how the part is actually made.
04
Internal check
Drawings are checked for dimensional accuracy against source material, tolerancing logic, drawing-standard compliance and BOM consistency before anything is sent to you for review.
05
Delivery & revisions
Files are delivered with a clear revision history, and we handle markup-driven revisions through to sign-off, tracking exactly what changed between issues so nobody has to guess.
Software We Use
Neutral-format exports (STEP, IGES, DXF, PDF) are available where a supplier or archive needs them.
Industries We Support
Related Mechanical Projects
Illustrative examples of mechanical work. They are marked as examples and will give way to verified case studies as client work is cleared for publication.
Mechanical Drafting FAQs
Mechanical drafting is the production of technical drawings — 2D and 3D — that define how a mechanical part or assembly is made, machined, fabricated or assembled. It covers dimensioning, tolerancing, materials, finishes and the documentation a workshop needs to manufacture from, and it's distinct from industrial design in that the priority is manufacturability and accuracy rather than appearance.
Typically this covers 2D part and assembly drawings, 3D CAD models, fabrication and manufacturing drawings, BOMs and revision control. Scope is confirmed against your specific project before work begins — a single-part drawing and a full multi-sheet assembly package are very different jobs, and we quote accordingly rather than applying a flat rate that doesn't reflect the actual work.
Yes — see our dedicated PDF to CAD and CAD conversion services for legacy drawing conversion into editable, native CAD files. This is a common first step on projects where a part needs to be modified but the only record of it is an old PDF or a scanned paper drawing from years ago.
Yes. This is a common reverse engineering task — we build an accurate 3D model from a 2D reference, physical sample or scan data, then produce updated drawings from that model. We flag any dimensions that had to be inferred rather than measured directly, so you know exactly how much confidence to place in each feature.
We work in commonly used mechanical CAD packages including AutoCAD, SolidWorks, Inventor and Fusion 360, and can deliver in neutral formats (STEP, IGES, DXF, PDF) where required for supplier handover or archiving.
Yes. We draft to your existing title blocks, layer standards and drawing conventions where supplied, or apply a clean standard drawing set if you don't have one in place yet. Getting this right at the start avoids a costly re-draft later when a customer or certifier asks for a specific format.
Where a part needs to fit or interface with existing equipment, we base tolerances on the functional requirement of that interface rather than defaulting to a generic tolerance block. This usually means understanding what the part actually needs to do, not just what it needs to look like.
Both, depending on your workflow — we can build the BOM structure directly into the CAD assembly so it stays synchronised as the design changes, and export it as a standalone spreadsheet for procurement or ERP use.
Turnaround depends on the complexity and size of the drawing set, and is confirmed as part of your quote rather than promised generically upfront. A single part drawing and a forty-sheet assembly package are simply not comparable jobs.
Yes, ongoing or overflow drafting capacity is one of the most common ways this service is used — a running arrangement where requests come through as they arise rather than as a single defined project with a fixed end date.
We'll flag it and ask, rather than guess and issue a drawing that might not reflect what was actually intended. A quick clarifying question upfront is always cheaper than a revision cycle after an ambiguous instruction was interpreted the wrong way.
Yes, where your end customer specifies a particular drawing format, title block or tolerancing convention as part of their supplier requirements, we draft to match it directly.
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