Carajillo Bob

The Lab

Materials, process and the craft behind the hardware.

Rings Closed with Welding — What Does That Mean?

February 18, 2026

Rings Closed with Welding — What Does That Mean?

What are welded rings (quick answer) A welded ring is a ring that has been permanently closed using heat, either by…

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Caring for Anodized Titanium — Why Color Changes (and How to Bring It Back)

April 13, 2026

Caring for Anodized Titanium — Why Color Changes (and How to Bring It Back)

Anodized titanium doesn’t get its color from paint or dye. It comes from a very thin oxide layer formed on the surface…

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How to size a heavy chain bracelet

May 14, 2026

How to size a heavy chain bracelet

Measuring flat on a table will mislead you

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How to figure out your wallet chain length before you buy one

July 03, 2026

How to figure out your wallet chain length before you buy one

One of the questions I get most often it's about right length. Someone buys a wallet chain, wears it for a day, and…

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When a quick release keychain actually makes sense

September 17, 2026

When a quick release keychain actually makes sense

A quick release system is a specific answer to a specific problem. If you do not have that problem, it is a mechanism…

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