Circuit Maker

DIY Industry Standards

• http://diylilcnc.org/ - precision, at $700 parts cost; open source plans - [1]
• MyDIYCNC - $400 parts cost - [review http://radar.oreilly.com/2010/12/diy-fabrication-hits-a-new-pri.html]; Kickstarter - [2]; sales site - [3]
• A Quick CNC - from Kickstarter - [4] - $550 parts cost; ball lead screws used; sales site - [5]

Other Industry Standards

• Probotix $600 mill with precision acme - [6]
  • Anti backlash spring nuts - [7]

Open Source Stepper Motor Controllers and Driver Boards

• Fully assembled from RepRap - $35 for 1 axis - [8]
• Generation 7 electronics from RepRap - DIY electronics version for self-replication - [9]

Bills of Materials

• Precision acme of 3/8-16 (.009 accuracy per foot or better) - $9/foot for steel, $14/foot for stainless steel - [10]
• Precision acme 3/8-16 platform nut - [11] - $20
• 1/4-28 threaded rod, stainless, - $2.50 for 1 foot length - [12]