Guitar knobs

cults3d

I recently had to replace one of my guitar's tuner knobs after I accidentally broke it... To ensure the new knob holds up, there are some small holes drilled into its internal structure that prevent it from shearing off if the knob gets slightly stuck while turning. The bolt diameter is 4.2mm and the knob fits snugly in place, requiring a bit of pressure to secure it properly - this isn't a design flaw, but rather an intentional tight fit.