• usacustomguitars.com/necks - many neck shape and thickness combinations
• musikraft.com - additional information for understanding of neck features.

Neck Profile

• *warmoth - Warmoth Neck Profiles
• *fender - see "NECK SHAPE" Filter
• *gibson forum - Gibson Neck Profiles

Neck Nut Width and Nut Slot Spacing

• graphtech - sizing guide and pre-slotted nuts

Fretboard's Radius

• youtube.com - understring radius gauges - video demonstration of three different gauges used for guitar setup and fretwork: standard, notched and understring.

Fret Sizes

• lutherie.net - provides an excellent manufacturer/sizes overview.

Tuner Holes

• music.stackexchange.com - how much does electric guitar's body physics affect the tone and playability.

Bridge And Pickup Routing Overview

• callahamguitar.com - technical specifications of some coustom parts.

Pickup Routing

• bareknucklepickups.co.uk - dimensions

Pickup Routing

• ABM - Aluminium, Bell Brass and Steel comparison - indicates that Bell Brass and Steel shape the guitar sound with character, while Aluminum acts largely neutral in the transfer of tone.

Pickup Routing

• see premierguitar.com article about design and construction
• see premierguitar.com article about design and construction

Pickup Routing

• buildyourguitar.com - The Secrets of Electric Guitar Pickups by Lemme - "If you know the resonant frequency and height of the resonant peak, you know about 90 percent of a pickup's transfer characteristics. Some other effects cannot be described using this model, but their influence is less important".

Pickup Properties

• seymourduncan.com - pickup selector
• dimarzio.com - pickup picker

Sound Control with Switches

• open.guitars (german) - Hambucker Conductor/Coils switching options.

Potentiometer Knob Styles

• philadelphialuthiertools.com - Choosing the correct knob for your guitar or bass.

Electronics Wiring Schemas

• Solder yourself - seymourduncan
• Solder yourself - dimarzio
• Solder yourself - amplifiedparts
• Solderless - EMG
• Prewired Classic - mojotone
• Prewired Modern - toneshapers
• Solder yourself - amplifiedparts

Active Pickups Electronics

• Custom Buffers (german) - used to decouple the guitar electronics from the sound influencing effects on the shielded cable.

Active Pickups Electronics

• daddario.com - you can choose between bright and mellow sounding electric strings.
• ghsstrings.com - also bright vs mellow overview, and [tension guide (pdf)](http://www.ghsrep.net/uploads/2/2/2/5/22258814/ghs_electric_guitar_string_guide.pdf)
• thomastik-infeld.com - good jazz and blues strings

Active Pickups Electronics

• frudua.com - graphical examples for body and neck woods showing relationship between wood hardness, its density and tone.