This channel focus on 2 things:
- @v2.donwen.com: make full use of UCUC (Unit Conversion Unified Calculations), ie: users can Search, Create, Store, and Share UCUC calcs;
- @v2-docs.donwen.com: publish UCUC calcs with book style, ie: calcs embedded in websites are virtually LIVE and usable on the fly.

Torque + Speed to Power Calc - Create Unit-aware Calculation in 20 Seconds
7:04
Torque + Speed to Power Calc - Create Unit-aware Calculation in 20 Seconds
Unit Confusion? Add Up Mixed Mass Units Easily with CalcsLive!
8:28
Unit Confusion? Add Up Mixed Mass Units Easily with CalcsLive!
Add up Lengths of Mixed Units with CalcsLive
4:57
Add up Lengths of Mixed Units with CalcsLive
Simple Unit-aware Calculation Made with Ease
0:59
Simple Unit-aware Calculation Made with Ease
Calculation Article with CalcsLive
2:29
Calculation Article with CalcsLive
LiveCalcs Unit Converter Overlay
1:06
LiveCalcs Unit Converter Overlay
Belt Conveyor Trajectory Design and Modelling Streamlined with AutoCalcsTo3D (AC3D) Bridge
4:52
Belt Conveyor Trajectory Design and Modelling Streamlined with AutoCalcsTo3D (AC3D) Bridge
Sizing Inventor model from AutoCalcsTo3D Bridge app
4:48
Sizing Inventor model from AutoCalcsTo3D Bridge app
AutoCalcsTo3D Bridge Intro - Empower 3D Modelling with Versatile Calculations
3:27
AutoCalcsTo3D Bridge Intro - Empower 3D Modelling with Versatile Calculations
Physical Quantity Web Component
0:28
Physical Quantity Web Component
Physical Quantity Element: a web component to present quantities w/ set-contained unit conversion.
1:34
Physical Quantity Element: a web component to present quantities w/ set-contained unit conversion.
3D Print - Is the Remaining Filament Enough for the Job?
6:28
3D Print - Is the Remaining Filament Enough for the Job?
Beyond Unit Conversion - Area Calculators
8:48
Beyond Unit Conversion - Area Calculators
Pipe Sizing for Flow Capacity! Bye, Magic Numbers! Let's Go Beyond Unit Conversion with UCUC.
8:55
Pipe Sizing for Flow Capacity! Bye, Magic Numbers! Let's Go Beyond Unit Conversion with UCUC.
Beyond Unit Conversion - Volume, Mass & Weight of a Box
17:03
Beyond Unit Conversion - Volume, Mass & Weight of a Box
Unit Conversion Unified Calculations in Multi-step with Sample
16:40
Unit Conversion Unified Calculations in Multi-step with Sample
Unit Converter using Expression As Input
6:16
Unit Converter using Expression As Input
Unit Converter Basic
6:40
Unit Converter Basic
Inventor FEA Tip for Manual Contact
11:45
Inventor FEA Tip for Manual Contact
AutoCalc Single Mode Intro
6:17
AutoCalc Single Mode Intro
Double Acting Cylinder Force Calculation in 5 Mins
5:21
Double Acting Cylinder Force Calculation in 5 Mins
Car Energy Consumption - Gasoline vs Tesla/EV
4:42
Car Energy Consumption - Gasoline vs Tesla/EV
Tesla Car Energy Consumption Calculation (Model 3, Model X, Model Y)
2:12
Tesla Car Energy Consumption Calculation (Model 3, Model X, Model Y)
Tesla Car Energy Consumption Calculation (Model 3, Model X, Model Y)
6:40
Tesla Car Energy Consumption Calculation (Model 3, Model X, Model Y)
Auger Rotation Simulation
0:29
Auger Rotation Simulation
Engineered3D Unit Converter
5:12
Engineered3D Unit Converter
Hole On Cylinder
3:09
Hole On Cylinder
Engineered3D Catalog - Shaft Coupling (Demo)
9:12
Engineered3D Catalog - Shaft Coupling (Demo)
Conveyor Trajectory Designer (Inventor App) Sample Runs
11:51
Conveyor Trajectory Designer (Inventor App) Sample Runs
Introduction to Conveyor Trajectory Designer (Inventor App)
5:14
Introduction to Conveyor Trajectory Designer (Inventor App)