|Project by joph||posted 04-16-2015 08:40 PM||1587 views||7 times favorited||4 comments|
First project post. I’ve built a couple of projects before, but this was my most ambitious to date. For my anniversary I wanted something that was within the limits of my skill, impressive, but also endearing. I think I hit the mark on this one.
I saw another project here on lumberjocks with this hinge mechanism and really liked it so I reverse-engineered the hinge. I built this for my wife for our fifth wedding anniversary. The sides and top are walnut. The bottom is birch plywood floating in a dado. The sides are mitered with maple keys. The arms are sapele. The pins are dowels capped with sapele.
I turned the pins on my drill press.
I decided where I wanted the pins on the lid, where I wanted the lid to be when open, and that I wanted the rear arm to be vertical. This causes the location of the rear arm pin on the box to be fixed. Then I made the longer arm and held it with the lid pin and drew a circle with the box closed and with the box open. The intersection of these two circles is where the last pin must be. It’s an elegant solution to a problem that requires very precise measurements…. without using any real measurements.
-- There's no such thing as a weekend project.