Engineering
notes.
Simulation and manufacturing, worked through step by step.
Articles are currently available in English only.
What is FMU? The Universal Language of Simulation
Imagine a hydraulic pump model that took six months to build in one simulation tool. A colleague modeled the electric motor in another. A third team keeps the thermal…
Industrial Furnace Temperature Control with PID
A heat treatment furnace for steel parts must hold temperature at exactly 850°C during a 45-minute soak phase. Too cold: incomplete austenization. Too hot: grain growth…
Mass-Spring-Damper: Rotating Shaft Vibration Analysis
A pump shaft rotating at 3000 RPM develops a hairline crack. Months later, catastrophic failure. Total cost: $2.3M in downtime and damage.
Wind Turbine Pitch Control: Power Curve Optimization
A modern horizontal-axis wind turbine operates in two fundamentally different regimes, and each requires a different control strategy:
Bearing Fault Detection with FFT and STFT
Unplanned equipment downtime costs industrial companies an estimated $260 billion annually according to industry surveys. Bearing failures are responsible for…
Twinsys AI Canvas Builder: Auto-Generating Block Diagrams with Gemini
Building a simulation model from scratch requires deep knowledge of both the physics being modeled and the simulation tool's block library. An engineer who knows exactly…
RC Circuit and Low-Pass Filter: From Time Domain to Bode Plot
The RC low-pass filter is simultaneously the simplest dynamic system you can build and a gateway to understanding every more complex system. Its transfer function is a…
Two-Tank Cascade System: Understanding Process Dynamics
Connect two tanks in series — the outlet of the first feeds into the second — and you've created something qualitatively different from a single tank. The combined…
FDM Materials Guide: From PLA to Nylon
Choosing the wrong filament for an FDM print is not just a quality problem — it's a cost problem. The wrong material choice leads to failed prints, expensive reprints…
FDM vs SLA vs SLS vs MJF: Which 3D Printer for Which Application?
A startup orders 50 functional prototypes using FDM. The parts arrive with visible layer lines, inconsistent wall thickness on thin features, and support scarring on…
How Slicer Settings Affect Your Quote: The Hidden Cost Variables
Most people think of a slicer as a tool that converts 3D models into printer instructions. It is that — but it's also a cost calculator in disguise. Every slicer…
Post-Processing: From Raw Print to Functional Part
A raw FDM print is rarely the final product. Layer lines, support witness marks, dimensional variance, and the inherent micro-porosity of FDM parts all require attention…
What Does Your Part Actually Cost? Nodefab's Transparent Cost Model
You upload a file to a 3D printing service. A price appears. There's no explanation of how it was calculated, no breakdown, no way to know if it's fair, and no guidance…
Introducing Twinsys — The Browser-Based Digital Twin Simulation Platform
By Ahmet · Node Poly · Published March 2026
Introducing Nodefab — Instant 3D Manufacturing Cost Estimation
By Ahmet · Node Poly · Published March 2026