Purushothaman Munusamy

Founder & Engineer at PurusCAD

[Purushothaman Munusamy @purus_m]

@Bindicom @TheRocketMediaX Thank you so much @Bindicom

[Purushothaman Munusamy @purus_m]

@Bindicom @TheRocketMediaX Building India's first CAD kernel. Hoping to join the list soon.

[Purushothaman Munusamy @purus_m]

@IndianTechGuide Is it going to run on #Bharos ?

[Purushothaman Munusamy @purus_m]

#PurusKernel update: the geometry engine just got faster and more reliable.

This development cycle, #PurusKernel — the independent CAD/BIM geometry engine being built from scratch in India — passed a major reliability milestone.

The engine now runs 11.5× faster on core geometry calculations, with results that match the previous, slower version exactly — so the speed came with zero loss in accuracy.

To prove it, the engine was tested against nearly 14,000 automated scenarios and 18 deliberately broken test cases — and caught every single one.

Progress also landed on how the engine handles curved surfaces meeting each other — one of the hardest problems in 3D geometry software, and a step toward matching what decades-old commercial kernels already do.

Still working through a few remaining edge cases — and being upfront about exactly which ones, same as always.

MVP stage. More soon.

#MakeInIndia #BIM #CAD #buildinpublic #DeepTech

[Purushothaman Munusamy @purus_m]

Please support this journey @CMOTamilnadu, @IITMIC, @anandmahindra, @svembu

[Purushothaman Munusamy @purus_m]

India doesn't have an independent CAD/BIM geometry kernel. So I'm building one — from scratch.

Every major CAD tool today runs on a licensed foreign kernel: #Parasolid (#Siemens), #ACIS (#Dassault), #OpenCASCADE (France). Even #India's own #CollabCAD (#NIC) is built on Open CASCADE.

#PurusKernel is different — a boundary-representation (B-rep) solid modeling engine written in pure C++ and DirectX, with zero third-party geometry SDK. Every boolean, curve, and surface routine is original code.

The first application built on it, #PurusCAD, takes IFC files and converts them into fabrication-ready MEP spool drawings — ducts, pipes, cable tray — for small fabrication shops currently priced out of enterprise tools.

Where things stand today:
→ MVP stage, in active development
→ Pricing & licensing not yet finalized
→ Website is live: https://t.co/Q9n8MkZm0c
→ 18+ years in the industry, building this solo
This is the kind of deep tech India hasn't built yet. Following along as it comes together.

#MakeInIndia #DeepTech #BIM #CAD

[Purushothaman Munusamy @purus_m]

India's talent is world-class. What's missing is ownership of the deep tech underneath.

PurusKernel — an independent CAD/BIM geometry kernel, built from scratch, IP owned in India.

MVP stage, releasing soon.

#MakeInIndia #DeepTech #BIM #CAD

[Purushothaman Munusamy @purus_m]

#aatmanirbhar #swadesh #Startups
@India_iDEX

[Purushothaman Munusamy @purus_m]

Every major CAD tool today runs on a foreign-owned kernel — Parasolid (Siemens), ACIS (Dassault), Open CASCADE (France). Even India's own #CollabCAD is built on one.

PurusKernel is different — pure C++, written from scratch, MVP stage, releasing soon.

#MakeInIndia #DeepTech

[Purushothaman Munusamy @purus_m]

#BIM #MEP #ComputationalGeometry #DirectX #Cpp #SystemsProgramming

[Purushothaman Munusamy @purus_m]

#aatmanirbhar #swadesh #Startups @India_iDEX

[Purushothaman Munusamy @purus_m]

Building an independent 3D CAD/BIM vertical from scratch in India. 🇮🇳💻This is PurusCAD, a native BIM app for routing ducts/pipes, built directly on top of my custom C++ & DirectX geometry engine. No heavy wrappers, just raw performance.👇 Watch the engine math below!

[Purushothaman Munusamy @purus_m]

#MakeInIndia #BIM #MEP #ComputationalGeometry #DirectX #Cpp #SystemsProgramming #DeepTech

[Purushothaman Munusamy @purus_m]

Instead of tying the project to legacy external ecosystems or slow web wrappers, the entire pipeline is custom-coded in Modern C++ and DirectX for high-performance Windows execution

[iDEX DIO @India_iDEX]

#Startups #MSMEs & #Innovators‼️
Join the exclusive #iDEX Outreach Session to explore opportunities & learn how you can innovate for India's Armed Forces.
🗓️13th Aug 2026
🕒3:00 PM – 5:00 PM.
We look forward to your participation!
Open for all.
Join at: https://t.co/P1PR1gAGVd