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MechaCAD Solutions

Service

CAD Design & Mechanical Engineering, Sri Lanka

Mechanical design and 3D modelling — assemblies, enclosures, sheet metal and anything else that starts as an idea.

Every other service here depends on this one. A scan is only useful once it is a model; a print or a cut is only as good as the geometry behind it. We model in SolidWorks, and the output is intended to be built from, not just to look right on screen — covering part and assembly design, electronics enclosures and housings, sheet metal design, and 2D manufacturing drawings.

Enclosure and housing design lives here rather than as a separate service, because it is the same discipline: a housing designed around your board's actual connectors and mounting points, rather than a board squeezed into an off-the-shelf project box. Our work includes housings for an ESP32 fingerprint unit and a power connector unit built for sound engineers.

The work ranges from a single component to a full assembly. Our functional V6 engine model was designed as a working assembly with moving parts, which is a useful demonstration of the difference between a shape and a mechanism. If you are starting from an idea rather than a part, this is where to begin — a sketch, a photograph, a competitor's product or a description of the problem becomes a model, then a prototype, then something you can manufacture.

What you receive

  • 3D models and assemblies, with motion checked where things move
  • Enclosure and housing design around your board and connectors
  • Sheet metal part design
  • 2D manufacturing drawings, dimensioned with tolerances called out
  • Design for the manufacturing process actually being used
  • Native and exchange formats: STEP, IGES, STL, DXF
  • Design revisions after a prototype has been tested

Suited to

  • New products that exist only as an idea or a sketch
  • Electronics moving from a breadboard to a finished product
  • Assemblies with parts that have to move together
  • Existing designs that need modifying rather than remaking
  • Custom parts with no off-the-shelf equivalent

Coverage

Colombo and surrounding areas, with island-wide delivery and on-site engineering support.

Request a quote

Process

How the work runs

From a brief — a sketch, a broken part, or a problem with no drawing yet — to manufacture-ready files.

  1. 01

    Brief

    What the part has to do, what it has to fit, and the loads and environment it works in.

  2. 02

    Concept

    Layout options, sizes and constraints agreed before detail work starts.

  3. 03

    3D modelling

    Parts and assemblies modelled in SolidWorks, with motion checked wherever things move.

    SolidWorks

  4. 04

    Design for manufacture

    Geometry adjusted for the process actually being used — printing, laser cutting or machining.

  5. 05

    2D manufacturing drawingsIf needed

    Dimensioned, with tolerances called out where they matter.

  6. 06

    Prototype and reviseIf needed

    A physical part in hand, then the model updated from what it taught us.

  7. 07

    Release

    Delivered as STEP, IGES, STL, DXF and native SolidWorks files.

    STEP · IGES · STL · DXF

You end up with3D models and manufacture-ready files: STEP, IGES, STL, DXF and native SolidWorks.

CAD design in practice

SolidWorks assembly of a functional V6 engine model with coloured components and timing gears

Functional V6 engine model

CAD design

A working assembly in SolidWorks, not a static shape.

Carbon-fibre Toyota Raize phone holder bracket with its mounting ball and clamp

Toyota Raize phone holder bracket

CAD design

A dashboard mount designed for one car, with nothing drilled.

Three reverse-engineered Mercedes-Benz CLK 200 door handle pull trims in different finishes

Mercedes-Benz CLK 200 door handle trim

Reverse engineering

Interior door pull trims, remade after the originals degraded.

Common questions

Before you ask

What CAD software do you use?
SolidWorks. We can supply native files as well as neutral exchange formats — STEP, IGES, STL and DXF — so the model opens in whatever your manufacturer or team uses.
I only have an idea. Is that enough to start?
Yes. A sketch, a photograph, a rough description or an example of something similar is enough for a first conversation. The important details are what the part has to do, what it has to fit, and the conditions it works in.
Can you design an enclosure for my electronics?
Yes. Send the board outline and thickness, the position and type of every connector, and where the unit mounts, and we design a housing around it — panel cut-outs, mounting bosses and cable routing included. Once a first article is checked, the same model covers a repeat run.
Can you design assemblies with moving parts?
Yes. Our functional V6 engine model is a working assembly designed and validated in SolidWorks, with the components moving as they would in the real mechanism.
Do you only do 3D modelling, or anything CAD-related?
Anything CAD-related: 3D modelling, assemblies, enclosures, sheet metal parts, 2D manufacturing drawings, reverse-engineered models, and revising an existing design. If it starts as an idea and needs to become a manufacturable file, it belongs here.

Other services

Bring us the problem.

A part, a process, or just an idea. Tell us the situation and we will tell you the engineering route to solving it — honestly, even if that route isn't us.

Message on WhatsApp075 613 3530

MechaCAD Solutions, 368, Siyambalape North, Siyambalape 11607, Sri Lanka