miércoles, 21 de diciembre de 2016

A nice simple picture frame

Eva, who attended to my introductory workshop on joinery, asked for another one on making picture frames. I liked very much the idea and put myself to task. Here is the example I have made to show my students.

It actually is a great exercise, moderately challenging for a beginner but quite complete: we see mitered corners reinforced with splines, ploughing the glass rebates, the use of a hand plane to shoot end grain and finishing with shellac and carnauba wax. The basic structure can be completed by a student within one day, although cutting the back board and the glass to size and finishing could take some more.

It can be a good opportunity to introduce some machines such as a power router and miter saw, without forgetting some good accurate handwork.

An example in american white oak.

With the shooting board you can creep up to a perfect 45º miter and dimension the pieces to identical sizes.

Frame components ready for glue up.

A nice crisp joint with no glue line. 

Cutting the grooves for the reinforcement splines.

The splines are pieces of veneer that provide some long-grain gluing surface and in the case above, the dovetail disposition gives some extra mechanical resistance.

I like the simplicity of these little back holders.

Last step: finishing with shellac and carnauba wax.

A perfect smooth surface, pleasant to touch and to look at.

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