Print a test line.  

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Harry
(@harry-3)
Active Member

When I do the "first layer calibration" or print the treefrog of Prusa Research, at first, a thick line will be printed on the bottom. I think this is a special feature to avoid some problem like filament spot. Does anyone know how to enable this feature in my model?

Best Answer by JoanTabb:

Use a standard configuration...     say Generic PLA (or what everfilament you are using) the purge line is standard

regards Joan

Posted : 26/11/2020 12:21 pm
Peter M
(@peter-m-3)
Prominent Member

If you use the prusa slicer you should have this in every print.

Posted : 26/11/2020 12:42 pm
Harry
(@harry-3)
Active Member
Posted by: @peter-m-3

If you use the prusa slicer you should have this in every print.

Thank you for your reply.

I use the Prusa Slicer to generate gcode, copy the gcode to SD card and print it from the SD card. But there is no this line for my model.

Posted : 26/11/2020 1:01 pm
Harry
(@harry-3)
Active Member

@peter-m-3

I think there is an option in the print configuration to enable this feature. But I don't know how to set it.

Posted : 26/11/2020 1:13 pm
JoanTabb
(@joantabb)
Moderator

Use a standard configuration...     say Generic PLA (or what everfilament you are using) the purge line is standard

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK...
Posted : 26/11/2020 1:24 pm
Neophyl
(@neophyl)
Noble Member

The purge line is defined and controlled as part of the Printers Custom Start gcode.  Installing a default prusa printer  **should** add those gcode commands at the same time its adding all the other start and end gcode.

Please save a project where you dont get the line from Prusa Slicer (File>save project as).  This will save a .3mf file.  Take the 3mf file, zip it into an archive and attach the zip file to a post here.  It must be zipped or the forum wont accept the file type.

The project file will allow us to open it and check all the settings you are slicing with and look to see if there are any issues with your start gcode. Its the easiest way to debug such issues.  

Posted : 26/11/2020 1:44 pm
Harry
(@harry-3)
Active Member
Posted by: @joantabb

Use a standard configuration...     say Generic PLA (or what everfilament you are using) the purge line is standard

regards Joan

I got it. Thank you.

Posted : 26/11/2020 2:06 pm
Harry
(@harry-3)
Active Member

@neophyl

Thank you.

As the answer from joantabb, I used a standard configuration for the print, I fixed this problem.

Posted : 26/11/2020 2:10 pm
JoanTabb
(@joantabb)
Moderator

Good News!  🙂

Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK...
Posted : 26/11/2020 3:40 pm
Szumi
(@szumi)
Active Member

What is that test line telling me?  I was going to ask this question but I saw this thread.

Thank you,

Szumi

Posted : 28/11/2020 7:43 pm
Neophyl
(@neophyl)
Noble Member

It’s not a test line really, it’s a purge line. Means it cleans out the filament from the extruder before it starts printing. 

Posted : 28/11/2020 7:50 pm
Szumi liked
Szumi
(@szumi)
Active Member

Okay, thanks.

Posted : 28/11/2020 8:19 pm
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