Heated Bed

8x12"

• Amazon $23 - [1]

5"x5" (120x120 mm)

• New Jersey - [2]
• China ePacket- [3]
• 5"x5" (120mm x 120mm) - ebay - [4]
• 5x5 ali express - [5]

Heater Pads

• 8x8" - $38 - 200W - 120V - [6]
• 12x12" - $30 - 500W - 120V -

Wiring

Reprap industry-standard is 20 gauge for 6 amps at 12 volts. http://reprap.org/wiki/HBP

DIY Heater of Any Size

• 2 sided high temperature tape - $9 - 5 cm x 30m [7] - $1 per 8" bed
• 2 sided, 4" wide - $2/sf - [8]
• silicone rubber sheet - $9/sf - [9]
• rubber with adhesive - $12/sf - [10]
• 1/32" silicone rubber - $5/sf - [11]
• High temperature masking tape - $8 - [12] - 25 cents per sq ft
• Nichrome wire - $10 for 100 ft - see Nichrome Wire Calculator.