I want printer to slow down when it reaches the top to do le...

MikiCab

(@mikicab)

Reputable Member

I want printer to slow down when it reaches the top to do lettering? How?

I am doing to printing and when I get to the top I have lettering. The PLA is acceptable but when I do the same thing with PETG it gets a bit stringy. I have lowered the temp to 204c and it seems to help. I was wondering if there was a way to slow down the printer when it gets to that part. I am using Slic3R Prusa. I can download Cura slicer if that will help.
Thanks.
Any other suggestions are welcome. I am using MakerGeeks PLA and PETG. Both print well but when I get to the lettering the PETG seems to get messed up.
Thank You again.

Posted : 27/01/2018 2:24 am

Paul Meyer

(@paul-meyer)

Honorable Member

Re: I want printer to slow down when it reaches the top to do lettering? How?

Two ways

when it gets to that part of the print, turn the knob on the front until the feed-rate is 50%. That slows everything down (nozzle speed, filament extrusion, etc.)

slice with different settings for different layers. I know simplify3d can do this, applying a completely different process to different height ranges of the print. Others here may know how to do it in Slic3r

Posted : 27/01/2018 5:29 am

MikiCab

(@mikicab)

Reputable Member

Topic starter answered:

Re: I want printer to slow down when it reaches the top to do lettering? How?

Two ways

when it gets to that part of the print, turn the knob on the front until the feed-rate is 50%. That slows everything down (nozzle speed, filament extrusion, etc.)

slice with different settings for different layers. I know simplify3d can do this, applying a completely different process to different height ranges of the print. Others here may know how to do it in Slic3r

I was trying to figure that out in Slic3r. Have not figured it out yet. 7 hour print so don't know if I can be here when it gets to that part of the print.

Posted : 27/01/2018 6:52 am

Peter

(@peter-12)

Estimable Member

Re: I want printer to slow down when it reaches the top to do lettering? How?

M220 sets the feedrate by g-code. You could just edit the Gcode manually at the proper place to automate the speed switch. Slic3r doesn't insert layer comments, so you have to find the appropriate G1 Z movement yourself. Let's say you want to slow the printer to 80% at Z=100mm. Open the G-code and search for "G1 Z100" then add the appropriate M220 command.

M220 S80 G1 Z100.150 F7800.000

Posted : 27/01/2018 7:17 am

bozzo

(@bozzo)

Eminent Member

Re: I want printer to slow down when it reaches the top to do lettering? How?

You can make slic3r to insert layer comments.

Printer Settings -> Custom G-Code -> Before Layer change G-Code

Look at the tooltip help, there is [layer_z] and [layer_num] available

Posted : 27/01/2018 9:45 am

bozzo

(@bozzo)

Eminent Member

Re: I want printer to slow down when it reaches the top to do lettering? How?

Actually, you can use conditional code processing:

{if layer_num==1234}M220 S80{endif}

Posted : 27/01/2018 12:43 pm

thomas.h19

(@thomas-h19)

Active Member

Re: I want printer to slow down when it reaches the top to do lettering? How?

https://www.prusaprinters.org/smooth-variable-layer-height-awesome-supports-slic3r-prusa-edition/

........

Posted : 31/01/2018 8:41 am