5kg for 1.125^2^ square meters. About 50mm high/thick. $105 filament cost. Could be much less filament/print time with “speed holes” in depth. He also uses very dense “hexagon fill patterns”. He put in an extra step to cover seams so it would not look lego-ey. Many alternate section joining techniques including raised front and back strips, and center patterns that lock sections without locking to each other.

kumikowoodworking.com/design/ has this pattern: kumikowoodworking.com/products/tn-114/

which is a strip design, and center sections could use a “center joint” with center patterns recessed from “strucutral stips”

There is a guitar made from wood process that requires a lot of woodworking gear and much more assembling/fine tuning time, so this would be easier.