Monthly blog | September 2023

2023-10-212023-10-22

Introduction

I want to update this blog more frequently, so I will write a monthly blog with updates on my current situation and a summary of my creations.

Update on my current situation

Dropped out of college

I was an undergraduate student at Ryukoku University but had to drop out due to a chronic illness. Although I was absent from school for a long period of time and rarely attended classes, I was allowed to stay in the geometry laboratory and play in a fabrication facility with a 3D printer, etc. Although not exemplary, I had an enjoyable college life.
My future plans are undecided, and what I need to do now is to gain the physical strength to be as active as anyone else.

Started to sell files for 3D printing

About 2 months ago, I started selling STL files for 3D printing on a Cults. This has been going better than I expected, and I have sold more than 50 pieces of data for 300~400 JPY in total, earning enough to cover the maintenance cost of the 3D printer. Thank you so much.
If you are interested, I would be happy if 3D printer owners reading this could purchase the data and play with it. I also have some free data available to the public.

https://cults3d.com/en/users/KeishiroUeki/

I will exhibit at Design Festa vol.58

I will be attending Design Festa in Tokyo on November 11-12, 2023.

Outline of Design Festa

Summary of my creation on September

Trammel of Archimedes

I 3D printed a mechanism called “Trammel of Archimedes”. It was designed as a print-in-place model with the sliders and other components assembled and 3D printed.

Dudeney dissection

This is a puzzle known as Dudeney’s dissection. Hinges connect a dissected square and transform it into a regular triangle. Based on that puzzle, I 3D printed the frame with white TPU (a flexible material) and fitted four-colored shapes into it. After posting to X (Twitter), I realized that I seemed to have made a mistake in the dimensions while drawing, resulting in a distorted square.

Hinged tessellation

Alternating red and blue shapes rotate to form a tessellated pattern. Like the previously mentioned Dudeney’s dissection, it is constructed using a TPU frame.

refference
ａｐu. https://x.com/apu_yokai/status/1490272050564730881?s=20
Yoshiaki Araki .『M.C.エッシャーと楽しむ算数・数学パズル』

1-DOF planar mechanism constructed based on regular polygons

Overview

From the central regular polygon, movable parallelograms are recursively placed, forming a mechanism with the shapes in the gaps between the parallelograms as rigid bodies. I might explain in detail in a project article later on.

Regular triangle

This is an animation of a mechanism based on regular triangle.

Regular pentagon

Animation and 3D printed model of a mechanism based on regular pentagon.

Regular hexagon (deformed)

This is a variation of a mechanism based on a regular hexagon, where each edges has been replaced with a similar curves.

Spatial linkage mechanism that has cubes as link

Spatial linkage mechanism that has cubes as link.

Refference
Eric Aberg. https://www.youtube.com/watch?v=JaGOefhfipA

Kaleidocycle

This is a kaleidocycle printed with TPU. You can play with it by spinning it around. There’s a 60-degree overhang, and printing cleanly with TPU is challenging, resulting in some rough surfaces on the piece.
You can download the STL file for free from the following website.
https://www.printables.com/model/595493-flexible-kaleidocycle
https://cults3d.com/en/3d-model/art/kaleidocycle-print-with-flexible-material