Novena Heirloom – lid capture magnets

The Heirloom is essentially a clamshell style laptop computer enclosure. But it has a removable keyboard and supporting rear panel section to facilitate access to the interior of the computer. Typical laptop hinge systems require magnets to fully close the LCD panel. In the Heirloom, these rare earth magnets are embedded during the construction process.

The stiles, or vertical members, have a recess cut on the CNC milling machine for each of the magnets. They are marked so that they get installed in the proper orientation. Ask my how I know to do that!

One of my favorite shop-made mallets and a simple installation tool made from a wood dowel are used to install the magnets. A rubber-toughened cyanoacrylate glue is used for the install.

Gluing up the rails with magnets pre-installed
Gluing up the rails with magnets pre-installed

Once the magnets have been installed, the stiles get glued up to the wood composite panel assembly. Side clamps underneath bring the rails in towards the center. Rows of spring clamps clamp the stiles down into full contact with the overlapping veneer on the back side of the composite panel. Plastic spacers keep the stiles in alignment without adhering to the glue

LCD composite panels ready for stile attachment
LCD composite panels ready for stile attachment

A rabbet cut along the edges of the LCD panels receives the stile members with just the top veneer layer overlapping the stile. These panels exhibit the veneer/glass/cork/glass/veneer construction.

A simple test demonstates the effect of the magnets as the panel nears the opposing magnet set.

Magnetic attraction at the opposing side is accomplished by a pair of magnets installed into a CNC-milled recess on the inside of the aluminum side plates.

 

 

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