How To - Pausing a print at a specific layer. (Simplify3D)

Post your advice, tips, suggestions, etc...

How To - Pausing a print at a specific layer. (Simplify3D)

Postby sthone » Sat Mar 28, 2015 4:51 pm

PausePrint0.jpg
PausePrint0.jpg (133.57 KiB) Viewed 12474 times

This is a quick "How to" on Pausing a print at a specific layer for all us newbies out there.
This is helpful if say you are running a print and would like to change filament color mid print. (Such as on the a part shown above.)



PausePrint1.jpg
PausePrint1.jpg (92.25 KiB) Viewed 12474 times

Another reason to use this method would be if you wanted to say imbed a nut into your print as seen above. (That's what I will be showing how to do in this tutorial.)
Tip - when designing your part leave adequate clearance so your nut will drop right into the print and also have room above it to clear the hot end once inserted.




PausePrint2.jpg
PausePrint2.jpg (114.7 KiB) Viewed 12474 times

After importing the piece into your slicer (Simplify3D in this case) click Prepare to Print!
1. Make sure Preview By "Layer" in selected.
2. Click through the layers to find the layer you would like to stop the print at. (this is either where you want to insert the nut or change the filament color.)
3. The layer number is listed here.




PausePrint3.jpg
PausePrint3.jpg (113.5 KiB) Viewed 12474 times

1. For this tutorial I will be stopping before the layer that just starts to cover the nut.
2. Which is Layer 50 in this case.
3. After you have all your processes set and you know what layer you're stopping at save your G-code to disk.
Last edited by sthone on Tue Aug 11, 2015 4:19 pm, edited 4 times in total.
User avatar
sthone
 
Posts: 835
Joined: Tue Jul 08, 2014 8:25 pm
Location: Connecticut

Re: How To - Pausing a print at a specific layer. (Simplify3

Postby sthone » Sat Mar 28, 2015 5:12 pm

PausePrint4.jpg
PausePrint4.jpg (116.72 KiB) Viewed 12472 times

Next you will need to edit your G-code in a text editor. I just used Notepad. (Windows)
Click File Open. (Top Left corner)
1. Change this box to "All Files (*.*)".
2. Find your File, then click "Open"



PausePrint5.jpg
PausePrint5.jpg (118.72 KiB) Viewed 12472 times

1. Hit Control (Ctrl) F on your keyboard and then type in "layer (your number)" in the box that comes up (layer 50 in my case.)
2. It will highlight the right layer line for you in all that code. (you can hit "Cancel" now to close that box.)



PausePrint6.jpg
PausePrint6.jpg (109.23 KiB) Viewed 12472 times

Copy and paste the following code were it is shown above. (the G92 E0 in the code below was added since the screen shot above was taken.)

Code: Select all
G91 ; set relative positioning
G0 Z40 ; raise Z (drop bed)
G90 ; set absolute positioning
M84 S0 ; disable idle timeout
M25 ; Pause SD Print
G92 E0 ; zero extruder

(If you need the bed to drop farther change the z40 to a larger number.)

8-11-15 Edit = Added G92 Code for zeroing the extruder.

Tip - Use M0 command instead of M25 if running on Octoprint.
(thanks Jules and jsc for those fixes)


Now just click "File" and "Save" to save the changes you just made. Upload the g-code to your SD card and start the print via Simplify3D from the "Print from SD Card" button.

Tip - The first time I tried this I also added this code to layer 3 just to test to make sure it worked without having to print all 50 layers first.


PausePrint7.jpg
PausePrint7.jpg (68.2 KiB) Viewed 12472 times

As the part was printing I taped the nut to the Heated Bed to heat it up in the hopes the filament would stick to it better. If printing with ABS you could (in theory) coat the top of the nut with abs slurry or glue stick to help with adhesion.
Last edited by sthone on Tue Aug 11, 2015 4:43 pm, edited 3 times in total.
User avatar
sthone
 
Posts: 835
Joined: Tue Jul 08, 2014 8:25 pm
Location: Connecticut

Re: How To - Pausing a print at a specific layer. (Simplify3

Postby sthone » Sat Mar 28, 2015 5:26 pm

PausePrint8.jpg
PausePrint8.jpg (61.88 KiB) Viewed 12472 times

When the printer gets to the start of Layer 50 it should pause and drop the bed, at this point you can drop in the nut (making sure its low enough to clear the hot end when it resumes) or you can use the jog controls to retract and change your filament if you are just changing colors.

***********************************************************************************************************************************************

EDIT - If you are changing filament you need to make sure you extrude the exact same amount of filament as you retracted.
i.e. - If you hit the retract -100 Button to remove the filament make sure you only hit extrude 100 Button when adding the new filamnet.

************* This should no longer matter now that the G92 command has been added to the code above *********************


PausePrint9.jpg
PausePrint9.jpg (143.63 KiB) Viewed 12472 times

To restart the print you need to first click the "Pause SD Print" button (even thought its already stopped), the button will now say "Resume SD print" just click it again and the print should resume where it left off. (you may need to clip any ooze that happened during the pause from your hot end with tweezers while it's restarting)
(If running through Octoprint just hit the "Pause" button once to resume after the pause. Do not hit restart)



PausePrint010.jpg
PausePrint010.jpg (63.98 KiB) Viewed 12472 times

The filament didn't really stick to the nut to well so I did get some stringing over the hole and a blob on the hot end.



PausePrint011.jpg
PausePrint011.jpg (114.87 KiB) Viewed 12472 times

Here is the finished piece with the nut full embedded into the print. It looks like there's a layer adhesion problem where I stopped the print to insert the nut but I think that the filament that should have been the outer perimeter just got stuck to the nozzle for a bit after jumping over the nut.

That's about it.... Thanks to jsc and mattrsch for help with the code part. If there are any inaccuracies or problems with this tutorial please point them out and I will fix them.

-Steve
Last edited by sthone on Wed Aug 12, 2015 2:02 am, edited 4 times in total.
User avatar
sthone
 
Posts: 835
Joined: Tue Jul 08, 2014 8:25 pm
Location: Connecticut

Re: How To - Pausing a print at a specific layer. (Simplify3

Postby Bratag » Sat Mar 28, 2015 7:55 pm

Great write up. For embedding stuff like the nut I would imagine having a correct fit is essential as I can see the hotend getting wrecked if it was to hit a metal nut sitting too high in the print.

I gotta experiment with some color changes using this.
Bratag
 
Posts: 439
Joined: Wed Jan 14, 2015 5:33 am

Re: How To - Pausing a print at a specific layer. (Simplify3

Postby Jules » Sat Mar 28, 2015 8:12 pm

Excellent! Very clear instructions, thanks Steve! :D
User avatar
Jules
 
Posts: 3150
Joined: Wed Jan 21, 2015 1:36 am

Re: How To - Pausing a print at a specific layer. (Simplify3

Postby jdacal » Sat Mar 28, 2015 10:54 pm

Thanks for taking the time to post this. Great easy to understand explanation!
jdacal

live print feed: http://enctrading.com/printcam/
See me Crash and Burn in Real time!
User avatar
jdacal
 
Posts: 466
Joined: Thu Jul 03, 2014 10:28 pm
Location: Florida

Re: How To - Pausing a print at a specific layer. (Simplify3

Postby PcS » Sun Mar 29, 2015 12:45 am

Thanks a ton for this ! I no longer have to baby sit and swap on the move !!!!
User avatar
PcS
 
Posts: 670
Joined: Mon Mar 09, 2015 12:19 pm
Location: Michigan

Re: How To - Pausing a print at a specific layer. (Simplify3

Postby jsc » Sun Mar 29, 2015 3:33 am

Here is an advanced trick for embedding nuts into parts by nophead: http://hydraraptor.blogspot.com/2014/03 ... holes.html
It relies on some crazy modeling tricks to basically print an octagonal hole in mid air in three layers. The first layer bridges to a rectangle, the second bridges that into a square, the third gets the corners, and after that you have an octagon.
jsc
 
Posts: 1863
Joined: Thu Apr 10, 2014 4:00 am

Re: How To - Pausing a print at a specific layer. (Simplify3

Postby SouthSideofdaSky » Mon Apr 13, 2015 3:54 pm

Awesome write up, thanks! Very easy to follow.

My question is...would it be theoretically possible to do this without input from the computer at all? I generally like to disconnect entirely from my computer after starting an SD print. I was looking through the library of g-code commands and I don't see anything like "pause SD print for X seconds".

Could I use the M109 command to (for example) wait for the nozzle to heat an additional 10 C then reverse the command, thus generating a pause of however long that would take?
E.g. my code might look like (if I were printing PLA at 215 C)
Code: Select all
G0 Z40, etc.
(maybe add a X and Y jog in here for safety reasons)
M104 S225 T0
M109 S225 T0
M104 S215 T0
M109 R215 T0


Obviously to insert the nut, etc. I kinda have to watch the printer anyways so it's not as much of an inconvenience to keep the computer plugged in/active. This is just more of a theoretical question.
User avatar
SouthSideofdaSky
 
Posts: 103
Joined: Wed Jul 09, 2014 9:35 pm

Re: How To - Pausing a print at a specific layer. (Simplify3

Postby insta » Mon Apr 13, 2015 6:57 pm

SouthSideofdaSky wrote:Awesome write up, thanks! Very easy to follow.

My question is...would it be theoretically possible to do this without input from the computer at all? I generally like to disconnect entirely from my computer after starting an SD print. I was looking through the library of g-code commands and I don't see anything like "pause SD print for X seconds".

Could I use the M109 command to (for example) wait for the nozzle to heat an additional 10 C then reverse the command, thus generating a pause of however long that would take?
E.g. my code might look like (if I were printing PLA at 215 C)
Code: Select all
G0 Z40, etc.
(maybe add a X and Y jog in here for safety reasons)
M104 S225 T0
M109 S225 T0
M104 S215 T0
M109 R215 T0


You want G4: Dwell ( http://reprap.org/wiki/G-code )
Obviously to insert the nut, etc. I kinda have to watch the printer anyways so it's not as much of an inconvenience to keep the computer plugged in/active. This is just more of a theoretical question.[/quote]
Custom 3D printing for you or your business -- quote [at] pingring.org
User avatar
insta
 
Posts: 2001
Joined: Tue Sep 16, 2014 3:59 am

Next

Return to How-to/Guides/Tips

Who is online

Users browsing this forum: No registered users and 1 guest