Such a valuable resource should not be lost. Fortunately, the WayBack Machine of the Internet Archive has kept an archived copy.
Here's the site map so you can get an idea of what's available and also so the search engines will pick it up.
HOW TO MAKE SPRINGS
|Introduction||Disclaimer, preface, description of the main types of springs|
|Design||General principles, mathematics, design limitations, buying design|
|Materials||Types of wire and their attributes, buying wire|
|Safety||General safety, wire handling, opening and closing coils, coiling safety, wire storage|
|Equipment||Winding machines, drills, hand winders, lathes, grinding equipment, finishing equipment, ovens, passivating equipment, hand tools, testing equipment, tooling stock|
|Tooling||Pickup pins, wire guides, looping plates and rods, layover plates, bending pipes, bending jigs, passivating baskets, grinding stages|
|Setup||First coils, drill setup, hand winder setup, lathe setup, left-handed springs, coiling without a lead screw|
|Torsion springs||Wire length, first trial spring, torsion spring ends, extended hooks|
|Extension springs||Wire length, first trial spring, loops, hooks, swivel hooks|
|Compression springs||Wire length, first trial spring, grinding the ends, squareness, free length adjustments, setting solid, heat setting|
|Finishing||Tweaking dimensions, stress relief, passivation, plating|
|Other types of springs||Buckling columns, nested compression springs, conical compression springs, variable-pitch springs, snap-rings, double-torsion springs, wire forms, bedsprings, limited-travel extension springs, braided wire springs, heavy wire, light wire, square and flat wire, tubular stock, leaf springs, Belleville washers, clock springs|
|Spring shops||Organization, product costing and pricing, careers|
|Glossary||Definitions of spring-related words, detailed diagrams of the major types of springs and their parts|
|Resources||Sources of information, associations, spring shops, suppliers, and other related links|
|Credits||About this site; about me; and how to download this site.|
|New stuff||This is an index page that provides access to new stuff added since January, 2003, and a chronicle of updates to the main body of the site.|
Here's the link to the entire website for HOW TO MAKE SPRINGS.
There is a slightly older version of the site available for download as a ZIP file.
A PDF version is hosted here.
Here's a site that describes a homemade spring coiler. And two more sites for similar tools: One, Two.
A YouTube video of a spring winder.
DI-ACRO made a spring winder that shows up on eBay once in a while. Other manufacturers have made and make spring winding tools as well.
Sean Michael Ragan has an informative spring-making site.
Tempering a spring.
Also an excellent, down-to-earth HOWTO site for spring-making is Randy Hengl's. He has an interesting approach to tempering the springs: burning them in motor oil.