J.D.: From your last post, I understand that you are attaching your neck to the underside of a thick lid. The neck will extend through the end of the box towards the headstock/tuners. Common wisdom and experiences of many would say that this arrangement would diminish the volume, and likely the quality of sound. Yet many have also built stick-on-top-of box guitars, myself included, and the result was a playable, satisfactory sounding cbg. This design seems that is should kill the vibration of the soundboard, but my limited experience is that the sound was "muffled", but not murdered. Now, when I build a cbg with the neck touching the underside of the box, I notch the upper side of the neck 3/8"-1/2' to get the soundboard some clearance from the top of the neck. I also glue a second piece of neck wood to the bottom side of the neck,running the full length of the inside of the box, to strengthen the neck. I always put a 1/4" red oak fretboard on the neck, even on a fretless. there are other ways to stiffen the neck, but since I've used this method, I haven't had a problem with my three sting necks bowing, even using a .046 or.042 top string and a .036 or .032 middle string. These can exert a pretty good forward pull on the neck, but so far, no problems. I usually use red oak for the neck, occasionally teak or black walnut, and soon a mahogany neck (thanks, Night Shift). I hope I didn't get too far out in the weeds with this post, but our collective goal here is to further our knowledge, and to aid newer builders in finding their way in pursuit of their hobby. I hope some of this post will be helpful to you, and hopefully others. Happy Building!
Right on JD. Get to it and get yer gits goin'! As Wayfinder so aptly expressed, it is hard to screw it up. As you continue to build you will learn by doing. Your builds will improve with each excursion. You will learn what works for you with the tools and materials you have available.I usually build three string gits using 1 x 2 necks, and my fretboard are 1/4" x 1 1/2" red oak "hobby boards", available at my local home depot.I buy the 4 ft. Length, which typically gets me 3 fret boards on my 25" scale gits. My addiction has resulted in @ 30 gits built over the past 18 months and I look forward to the learning curve on each new start. Keep checking out CB Nation for tips and screw ups that other builder offer, and sooner than later some new builder will be looking for your experienced offerings to help him or her in their hobby. The one who has built two has much to offer the newbie!