printrbot simple metal x / y axis upgrade to 10 x 10 inches, under $75

parts needed to upgrade your printrbot simple metal 1403 to 10x10 print area for under $75:

1. start by printing the shorter x rails on a 6x6 printrbot simple metal (orient diagonally and it'll fit).

2. next print the 4 inch y axis extension.

3. order 8mm rods from mcmaster (O1 tool steel rods, ~$12). order gt2 belts for reprap on ebay (~$5).
- x-axis rods is ~14.25" long, y-axis rods is ~14.75" long

4. use the shorter x rails to mount the larger build plate.
- aluminum plate, ~15