Honestly , I was wondering that myself . I wasn ' t positive on the motion system config . I think the xaxis motors might ride on the xaxis at the same time , I do think a corexy implementation could work , I ' m just not sure if there are any control boards or firmware ' s that would allow for dual extruder , x and y axis . I think maybe the sigma just has dual extruder and x axis . <| sep |> Put a small piece of black electrical tape on the laser sensor on some mice at work . They think its broken for the longest time . <| sep |> Yeah , I thought this was a pretty insultingarrogant statement to make just to promote a movie . I ' m an atheist , so I don ' t really care about priest ' s feefees too much , but the work they put in is substantial and this is selling it short .