Research & journal

Notes from the bench

Experiments, materials and measurements from the VIHI lab.

December 12, 2025

Origami Filter Collapse: Complete Scientific Guide, Experiments & Real Solutions

Origami Filter Collapse: Complete Scientific Guide, Experiments & Real Solutions Contents 1. Why Origami Collapse Happens 2. The R…

December 12, 2025

Origami Dripper vs V-Fold Guide

Explore origami vs vfold ultimate guide with clearer structure, comparison sections, FAQ links, and product guidance from VIHI Des…

December 12, 2025

Kalita Wave vs V60 Comparison Guide

Explore kalita wave vs v60 comparison with clearer structure, comparison sections, FAQ links, and product guidance from VIHI Desig…

December 12, 2025

Kalita Wave 155 Complete Guide

Explore kalita wave 155 complete guide with clearer structure, comparison sections, FAQ links, and product guidance from VIHI Desi…

December 12, 2025

Kalita Coffee Dripper Guide: Wave 155, 185, Filters and Recipes

Complete Kalita guide covering Kalita Wave 155 and 185, flat-bottom brewing, filters, grind size, recipes, troubleshooting, and Ka…

December 12, 2025

V-Fold 155: The Ultimate Precision Filter Paper Former for Kalita Wave

Table of Contents What Is V-Fold? Why Wave Papers Need Reshaping The 38.3° Precision Geometry Extraction Improvements How to Use B…

December 12, 2025

V-Fold 155: The Definitive Kalita Wave Filter Former (Why 38.3°?)

V-Fold 155: The Definitive Kalita Wave Filter Former (Why 38.3°?) Contents What Is V-Fold 155? Why 38.3° Matters The Stacking Prob…