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Topic: Print head hitting printed items

I have had a problem with my printer, well I have have had many problems with my printer but one i haven't solved yet is the printer hitting the print.  I have had this happen several times it knocks the items around.  It is frustrating can't finish anything.  If I use gcode to move the print bed up and down everything seems to move smoothly.  I was trying to print the attached plate of 4 neckerchief slides using Soliprint, standard slicer options, .3mm, 235 extruder 105 print bed, Aquanet extra hold bed prep.

Original 4 Slide stl https://drive.google.com/file/d/0B7NO6d … sp=sharing
Generated STLhttps://drive.google.com/file/d/0B7NO6d … sp=sharing
Generate GCode https://drive.google.com/file/d/0B7NO6d … sp=sharing

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Re: Print head hitting printed items

I found an old print that was just off a little and noticed it failed at the same place.  it just didn't fail as badly.

http://soliforum.com/i/?oTHURR0.jpg

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Re: Print head hitting printed items

If you are using Repetier, and Slic3r, go into slice3r and enable z-lift.  This will lower the bed each time it moves to another position...so it doesn't hit the model.  It defaluts to .1, but I use .050, and works well.