Basses built with the scale length of a guitar, typically 25.5 inches.
Eden paddle-head guitar neck converted to bass. Strings are lower four of 5-string set, unwound to fit 25" scale.
More: Stratocaster Micro Bass 1 ...
Originally all red, refinished in black burst. Eden paddle-head guitar neck converted to bass. Strings are lower four of 5-string sets, unwound to fit 25" scale.
More: Stratocaster Micro Bass 2 ...
More: Bass Projects ...
A conversion neck is one that can convert an instrument from one scale length to another with no other modification. A common conversion is 34" to 32". By overhanging the 20th fret, or leaving it off, you can use the stock bridge location on the body, just adjust for intonation. Such a neck will work on any standard bass body. A conversion from 34" to 30" requires overhanging two frets, or losing one or both.
More: Conversion Necks ...
I have several hand drills, cordless and corded. For real work, a massive DeWalt cordless powers easily through concrete. But you don't need all that to build a guitar, in fact, you don't even want it. The DeWalt is expensive and weighs a ton. For light use, a little cordless Ryobi or Black&Decker will do just fine and is a lot lighter on the arm and the wallet.
More: Hand Drill ...