The template was made on the small milling machine at work, using the XY table to give a shape with decent right angles. It was then fastened onto the guitar with double sided tape and the router fitted with a straight 'follower' bit to follow the outline without destroying the template.
Masking tape was used to mark the positions of the pickups. As the position affects the sound it seemed a good idea to place them as far apart as possible. Practical reasons prevent this distance from becoming too great. The bridge pickup could be mounted straight alongside the bridge, but the string movement at this point is quite small resulting in a weedy output. The front pickup could butt upto the end of the fboard, but my occasional ventures into slapping & popping use that area to get under the D & G strings. I would keep bashing my fingers on a pickup if it was sited there, so again it has to be moved back by a couple of inches to give me finger room.
The template was restuck to the other position and the second pickup hole was routed. It finished up a shade too tight to get the pickups in and had to be whittled with sandpaper and hand chisels to give a good fit.
A small oversight has caused the bridge pickup hole to enter both the rear control cavities. Apart from having to move the batteries elsewhere, the main problem is that the pickup fixing screws will have nothing to fasten to. Not that I could find woodscrews that long and thin anyway...
Before the pickups were routed, the guitar was strung to check that the truss rod worked, check the balance, but mostly because I just wanted to play it albeit acoustically. Fortunately the rod worked fine after a three-quarter turn to give just the right amount of neck relief, but I couldn't get the action down as low as I would like. I just ran out of bridge adjustment.
There is some neck angle (angle between the neck and body) but this was something that I found difficult to accurately calculate beforehand (I didn't know how thick the fboard was going to end up after all the shaping). The only thing for it at this stage was to recess the body by around 3mm so that when the bridge is fully wound down the strings will be practically bottomed out on the frets.
It is a scary proposition to get the router back out all over the front of MoonBassAlpha especially near the fboard and all those nice curves stand a chance of getting gouged by a power tool gone crazy, but it needed to be done. Spacer blocks were taped to the top of the body as the router needs a flat surface to work from.
3mm was removed from the wenge / padauk and part of the ash. It was then blended back to keep the general shape. The top curve was able to be extended into the body more as it joins the top of the fboard. On the whole it looks remarkably similar to how it was beforehand (which is good) but now I will have the adjustment needed to set it up properly later on.
I just need to work out how to fix the bridge pickup without preventing one of the volume pots from being fitted or changed...
No comments:
Post a Comment