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Makerbot Printable Aluminum Nichrome Heated Build Platform by Jamesdavid is licensed under the Attribution - Share Alike - Creative Commons license.
© 2010 by Jamesdavid
Instructions
I) Prepare the Heated Build Platform
1) Print 3x the small corner pieces.
2) Print 1x the larger corner piece with molex connector holder.
3) Bolt two of the small corner pieces to the right edge of the standard Cupcake wooden build platform (facing build platform).
4) Prepare AL build surface (Obtained from OnlineMetals.com, 4in x 4in x 0.1875 in) with 10 Ohms of nichrome wire and a 100 kOhm thermistor. (Obtained from Makerbot) (See the NiCr Pattern for a nice template to use to lay the NiCr wire on the AL surface).
--> Note: You may want to try to use 6 Ohms instead. 10 Ohms worked well for me but others have suggested 6 Ohms to heat the platform faster.
5) Solder one end of a 4 wire Molex connector to the build platform (2 wires to the thermistor, 2 wires to the nichrome -- follow instructions for soldering plastruder). (I cut a Molex hard drive power extension cable in half).
6) Place the AL and stock orange lexan pieces into the two corner pieces bolted to the build surface.
7) Place the remaining corner pieces onto the build platform and bolt in. The molex connector should be on the back left of the build platform.
II) Wiring Harness
8) Build wiring harness to connect the extruder to the build platform.
See pleasantsoftware.com/developer/3d/2009/11/23/how-to-connect-the-2nd-thermistor/
9) Install tension relief parts in the two empty M5 holes on the Z platform.
10) Update firmware:
wiki.makerbot.com/plastruder-firmware-update
