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Tools on dx.com
- Centre Punch
- Mitre Box.
- Dial guage?
- Try Square. (Right Angle)
- Dowling Tool (for right angle drilling).
Molding/Casting
- Transparent Silicon
Electronics
- 2x Wireless modules. ESP8266 ESP-03, About $3 on ebay. (Remember to look up voltage divider). Need USB Serial programmer
- Photodiodes
- Nicromium Wire
- Tiny stepper motors (5 are like $4)
- Transistor/Capacitor tester ($12)
- DIY Oscilloscope DSO138 (preassembled with case for $30) - http://www.banggood.com/search/dso138.html + USB TTL (Or make an Arduino/soundcard one).
3D Printer
- Casting Resin
- 2.3kg of Hydrocal is about $75, 100 pounds hcal to 45 water
- 4x Stepper Motors - NUMA 17
- Filament
- Hot Head
- Extruder