People often wonder why two seemingly identical electric guitars sometimes require noticeably different bridge or saddle heights to achieve a similar string action and feel. The answer has to do with manufacturing tolerances when making the neck and body. Let’s take a look at the issue and explain why shims are often used in guitar construction.
…that vanish as soon as you go looking for them!
As well I know from my experience as a physicist, poking around with large amounts of electricity can be as much fun as it can be dangerous and scary. Particularly with high powered laser systems where high voltage, high current, and running water (for cooling) are often in close proximity. Guitar amplifiers are pretty tame in comparison so I have no problem opening them up and poking around.