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The Physics of Fighting: Engineering Principles in Martial Arts post thumbnail image

The Physics of Fighting: Engineering Principles in Martial ArtsThe Physics of Fighting: Engineering Principles in Martial Arts

September 27, 2025September 27, 2025 ycthk 0 Comments 12:44 pm

Martial arts has always been described as both a science and an art. The art lies in expression, discipline, and spirit. The science lies in mechanics—the invisible framework of physical

Sprue for molding plastic partsSprue for molding plastic parts

October 9, 2024October 9, 2024 ycthk 0 Comments 6:34 pm

In plastic model kit molding, the sprue is essential for directing molten plastic from the injection molding machine into each cavity of the mold where individual kit parts are formed.

Hobby Kit Plastic MoldingHobby Kit Plastic Molding

October 9, 2024October 9, 2024 ycthk 0 Comments 6:32 pm

Plastic mold design is a critical aspect of producing high-quality plastic model kits for hobbyists. The process involves creating a mold, typically made from metal, which shapes molten plastic into

Life-size Gundam in JapanLife-size Gundam in Japan

February 17, 2024February 17, 2024 ycthk 0 Comments 4:27 am

Parts Design with Fusion 360Parts Design with Fusion 360

May 29, 2022May 29, 2022 ycthk 0 Comments 3:12 pm

Fusion 360 is a cloud-based 3D modeling software platform by Autodesk Inc. As a multi-component part system that combines parametric, direct, and mesh modeling tools, it has a free license

A Practical Guide to Operating and Maintaining a Delta FDM 3D Printer: For BeginnersA Practical Guide to Operating and Maintaining a Delta FDM 3D Printer: For Beginners

September 3, 2020September 3, 2020 ycthk 0 Comments 10:03 am

Different 3D printers have slightly different features. In the world of Fused Deposition Modeling FDM printers, Cartesian and Delta 3D printers are the most popular among hobbyists who are new

Ghibli Museum (outside)Ghibli Museum (outside)

September 3, 2020September 3, 2020 ycthk 0 Comments 9:30 am

Photo taking is not allowed inside…  

Toy shops in TokyoToy shops in Tokyo

September 3, 2020September 3, 2020 ycthk 0 Comments 9:20 am

Hobby shops in TokyoHobby shops in Tokyo

September 3, 2020September 3, 2020 ycthk 0 Comments 8:58 am

AttributionAttribution

April 12, 2019April 12, 2019 ycthk 0 Comments 11:00 am

A number of third party musics and sounds (from Opengameart) have been used in our apps, including (and not limited to): Red Curtain, by HorrorPen Mushroom Dance, by Bart 8Bit

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