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 Rank: Semi-Pro Level 2  Groups: Registered
Joined: 19/06/2014 Posts: 78 Points: 216 Location: Doncaster
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Whenever I try and print a large item the printer ends up out of sync half way through. And the print is out by 3- 4mm. Have tried calibrating with various different business cards, but can't get right. Too thick and the first layer doesn't take, too thin and the second layer does not come out right. Have tried as raft print, and brim print but still same. getting frustrated 
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 Rank: Super-Elite      Groups: Registered
Joined: 17/12/2013 Posts: 3,982 Points: 11,974 Location: NY, USA
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can you post some pictures of your prints
carl
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Rank: Semi-Pro Level 2 Groups: Registered
Joined: 19/06/2014 Posts: 78 Points: 216 Location: Doncaster
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Rank: Super-Elite Groups: Registered
Joined: 17/12/2013 Posts: 3,982 Points: 11,974 Location: NY, USA
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I cant open those pictures.can you resize them to 640 by 480 pixels and then they will show up in your post
carl
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 Rank: Pro Groups: Joined: 24/08/2009 Posts: 48,827 Points: -13,348
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looks like the bed is moving, or has the head collided on its return.
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Rank: Super-Elite Groups: Registered
Joined: 17/12/2013 Posts: 3,982 Points: 11,974 Location: NY, USA
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OK I managed to open the pictures
I think this may be an adhesion problem.The part is coming loose from the table during the print and is shifting.it is also possible the nozzle is too close to the build table and it is hitting the previous layer.I would increase the spacing a touch.I would also make sure the table is level as per the instructions.I would recommend using blue painters tape on the print table.Stick the tape to the table to make a new surface for the part to print on.Use a raft to ensure good adhesions.Brims dont work well in my experience.
The other thing to look at the the nozzle temperature.You may have to play around to get the best results.Try going up and down maybe 5 degrees and see what happens.Not all filament is the same.Sometimes you need a slightly higher or lower melting temperature to get the best results.
Carl
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Rank: Semi-Pro Level 2 Groups: Registered
Joined: 19/06/2014 Posts: 78 Points: 216 Location: Doncaster
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Part is actually stuck to bed when I stop the printer.
The head temp is at 220.
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Rank: Super-Elite Groups: Registered
Joined: 17/12/2013 Posts: 3,982 Points: 11,974 Location: NY, USA
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I would try 215 for the nozzle temp.Are you sure the bed is level? Have you checked the slicing file to make sure it has sliced properly.IF the part has not moved on the bed then the print head must be getting out of alignment.That could be because the nozzle is hitting the print or something is interfering with the movement of the print head.I would try printing a small cylinder and watching the whole print so you can see what happens.
Carl
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Guest
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US
