Branching Out Wood

Modern Functional Home Decor by David Wertheimer

Moisture & Wood Movement

How To & CalculatorsDavid Wertheimer3 Comments

“Wood movement” - or how wood expands and contracts in response to the environment - confuses a lot of folks, yet its a critical consideration in building solid wood furniture that will survive generations. This article consolidates a lot of disparate sources and calculators, providing both a foundational understanding of why wood moves, some detailed resources so that you can calculate how much movement to expect, and a few tips & tricks for how to design with movement in mind.

How to Avoid Sagging Shelving

How To & CalculatorsDavid Wertheimer17 Comments

A few calculations upfront can help make sure your shelves (or coffee table) will stand up to loads of books - or stand up to you standing on it! This article outlines several key considerations and resources for wood furniture design, giving some tricks to strengthen a design that might be of borderline strength. And it also points to a few useful calculators - and how to use them - for metalwork as well.

Keep It Simple Stupid!

CNC, Workshop & SafetyDavid WertheimerComment

In installing a ceiling lift for my CNC, I attempted to build an auto-leveler to automatically move the gantry to keep the table balanced. What should have been an interesting but straightforward closed loop feedback system quickly got out of hand, making me one more victim who has learned the KISS principle the hard way.