18 Jul 2009

Building a Nyckelharpa: Day 2

OK! The two halves of the instrument have been setting all night, and the glue should be dry by now. Time to put the shell on the rotating sander to smooth out the insides of the instrument. This is part of the fiddle's sound-chamber, so it's important that the sides are smooth:

Sanding the inside

Here's the finished result, showing the glued seam as well:

Finished frame

The next step is to mark and drill the holes for the tuning pegs:

Preparing tuning peg holes

Drilling tuning peg holes

In go the tuning pegs:

Tuning pegs

Next we'll use a bandsaw to rough out the sound holes in the top board:

Cutting chamber holes

The finishing work is done with rasps and files, to round the front edges:

Edge finishing

A very time-consuming, but important, part of the shaping of the front sound board is to thin the front of the wood in a very slight incline from the center to the edges, so that the board is thicker in the middle and thinner where it meets the sides. We do this with a plane:

Planing

The bass resonator is mounted on the underside of the front panel, hidden from view. It helps shape the sound produced by the instrument. First we'll make sure the side that mates with the inside of the case is absolutely flat:

Shaping interior baffle

We'll measure and mark where to glue the bass resonator on the inside of the front panel:

Measuring for baffle

Here's the bass resonator in place, together with the keyboard support on the lower left, which helps bear the weight and pressure of the keys:

Baffle and keyboard support

How many clamps does it take to hold down the bass resonator and keyboard support?

Clamping

While that's setting and drying, let's start gluing the back panel on:

Gluing the back

Dozens of clamps hold the board in place, while we wipe off excess glue with water:

Gluing the back

Tune in tomorrow for more exciting adventures in clamping and gluing!

Gluing the back

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