CNC materials
Looking for common materials.

1. Enco - Enco carries 1/2" Acme screws, Love Joy couplers and other parts.
2. McMaster-Carr - Carries many different componets including 2 start 1/2" ACME screws.
3. MSC Industrial Supply - 4000 page catalogue (THE Big Blue Book) with over a half million items, has many componets for CNC.
4. Dumpster CNC - Anti-backlash nuts perfect for DIY CNC solutions. Inexpensive, easy and simple.
5. CNCRouterParts.com - Offers parts and complete setups for DIY linear rails, bearing block for lead screws and anti-backlash nuts that work together using 8020 15 series stock.