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Build your own heatbed for a Delta 3D PrinterI used the 4 PTC heater elements (220 volt with 100 degrees max) fixed to the back of a hexagonal aluminium plate on my delta printer. Heaters available here: [www.aliexpress.com] . They are selflimiting temperature to 100 degrees - no need for extra electronics to regulate the temperature on the bed. Use a 3 mm window glass on top of the aluminium(insulated on the heater element side)
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