Creating a Parametric Template for Hidden Finger Joints

Creating a Parametric Template for Hidden Finger Joints

Creating a Parametric Template for Hidden Finger Joints

When our colleague Heinrich is not supporting our customers or working on R&D projects, he likes to spend his free time making things. So when he encounters a challenge that might benefit from a convenient parametric approach, CAESES is an obvious choice. Just like this time, when he set out to create a bunch of wooden drawers.

Parametric finger joint template in CAESES

Here is Heinrich’s explanation of his approach:

“I wanted to be able to quickly manufacture wooden boxes and drawers in various sizes. Typically, with a CNC mill, this requires to manually remove additional material from the corners since the milling tool can’t get all the way into sharp corners. A hidden finger joint allows to hide this shortcoming from the eye, while still making for a very strong joint with lots of cross-grain surface area for glue-up. The hidden geometry features are surprisingly complex — especially when aiming for variable box sizes and different stock thicknesses. While they might not be visible, the right number and sizing of fingers is very important to ensure a strong joint. At the same time, clearances need to be fine-tuned to ensure just the right gap sizes for a good glue-coverage. Exactly what a parametric model could provide. So using CAESES was a no-brainer.”

CNC Tool Path
Milled Sides
Manual Post-Processing
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Please do not hesitate to get in touch with us if you have questions in the context of your specific application. We look forward to discussing it together with you!

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