Circuit Maker

DIY Industry Standards

• CubeSpawn motion control - [1]
• http://diylilcnc.org/ - precision, at $700 parts cost; open source plans - [2]
• MyDIYCNC - $400 parts cost - [review http://radar.oreilly.com/2010/12/diy-fabrication-hits-a-new-pri.html]; Kickstarter - [3]; sales site - [4]
• A Quick CNC - from Kickstarter - [5] - $550 parts cost; ball lead screws used; sales site - [6]

Other Industry Standards

• Probotix $600 mill with precision acme - [7]
  • Anti backlash spring nuts - [8]

Open Source Stepper Motor Controllers and Driver Boards

• Fully assembled from RepRap - $35 for 1 axis - [9]
• Generation 7 electronics from RepRap - DIY electronics version for self-replication - [10]. Supported amperage up to 2 amps.
• Easy Driver stepper driver boards - [11], sold at Sparkfun - [12]

Bills of Materials

• Precision acme of 3/8-16 (.009 accuracy per foot or better) - $9/foot for steel, $14/foot for stainless steel - [13]
• Precision acme 3/8-16 platform nut - [14] - $20
• 1/4-28 threaded rod, stainless, - $2.50 for 1 foot length - [15]