nozzle hitting the heated bed (G2S pro)

[josephclc]

I have a constant problem of the nozzle hitting the heated bed. I have followed the instructions to do all the calibration. It runs fine with the 4 checks points yet when it comes to actual printing, the nozzle start hitting the heated bed. Is there any solution to this problem?

[William]

Hi,Could you take a video about the issue?

[josephclc]

Here is the video
https://drive.google.com/file/d/0By-ejr ... sp=sharing

[William]

Hi,after watching this video,I find that the nozzle is too close to the hot bed.You need to leveling it again.In this time,please follow by this instructional video:https://www.youtube.com/watch?v=VCa_Bvx ... o1VV2ioejQ.

[josephclc]

I have followed the instructions in the youtube video but still it is hitting the bed. I have check the three points which there is a paper gap between the nozzle and the bed. Also, I have set the bed as concave. Yet it is still not working. Here is the most updated video.
https://drive.google.com/file/d/0By-ejr ... sp=sharing