Making a semi-hollow neck-through winter bass guitar

The second guitar in the four seasons series :) This time it's a necktrough semi hollow design made from maple and smoked oak veneer. The theme is winter so we took a snowflake and white color as main motifs in this build. It took quite some time to get the design right but after couple of work days the 3d model was complete and we could start the production. The 5cm plank was first cut to desired smaller pieces. each piece was than planed 43mm thickness and glued together into a single block. Glue we used for this project was vinyl acetate based with short open time of 20 minutes. After the glue has cured, the block was left for a week to relieve some possible inner tensions and to achieve uniform moisture level troughout the cross section. The block and the fret board was milled on kuka kr 150 industrial robot. Tension rod is made from two 4mm round cold rolled steel rods, one 4mm inbus screw and eight 4mm nuts. Fret slots were marked with a blade over the paper with precisely printed fret positions and then cut with a small hand saw. After the fret board was glued onto the neck over the truss rod groove and all the necessary holes were drilled, the guitar was sanded and prepped for painting and six coats of varnish. Fret board was oiled with teak tree oil and frets were hammered and then pressed into their designated grooves. Schaller tuning keys and piezo bridge were the choice for this build so after we installed them, it was time for electronics. A good friend of my brothers, Phd student Ante Brizić made schematics for this guitars electronics which we build for only 5 dollars or so.. And it works great! After all the soldering, it was time to put the whole thing together, add a guitar belt, tune the strings an done! This project took us well over 150 work hours.

Special thanks to Schaller for all the advice about piezo bridge instalation and also to Krešimir Klen- Fish for the final guitar test!.. :D!

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