3Dプリンタの資料。
http://reprap.org/wiki/G-code#M92:_Set_axis_steps_per_unit
http://3dp0.com/calibration-pyramid/
http://tsurezurelife.com/st/printrbot/entry8.html
http://nexus7fan.blogspot.jp/2013/01/printrbot-plus.html#more
3Dプリンタの資料。
http://reprap.org/wiki/G-code#M92:_Set_axis_steps_per_unit
http://3dp0.com/calibration-pyramid/
http://tsurezurelife.com/st/printrbot/entry8.html
http://nexus7fan.blogspot.jp/2013/01/printrbot-plus.html#more