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Correct Order of Calibration?  

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AZXCIV
(@azxciv)
Active Member
Correct Order of Calibration?

Hey guys! New to the forum! Just got my mk3s this week! Getting some decent prints out of it, but I am in the process of dialing it in to go those crisp prints my soul desires.

 

Been reading @bobstro 's blog and there is a ton of gold there. Bob, if you are reading this, I have a couple of questions for you:

1. What is the correct order to calibrate things? From what I gathered from your blog its 

  1. Linear Advance 
    - What exactly am i looking for on your calibration tower?
  2. Extrusion Multiplier 
  3. Live Z - Live Z here because a perfectly calibrated live z will change after extrusion multiplier has changed
  4. Temperature 
  5. Retraction

Am I missing any thing here? Do you have an efficient fast process to make these calibrations for each filament? It seems like with each filament it could take 4-6 hours to calibrate each individual roll following your steps on the site. Is that correct or have you found a way to steamline it a bit?

2. Ive been working through the guide, so far Ive gotten the first four done. Im now working on testing retraction using the nine extruder technique that is mentioned on your blog. My first test (with wiping turned off) tested zhop from .02 - .04 and retraction distance from .02-.04 retraction speed @55ms detraction speed @ 25mms. Still getting retraction on all nine samples.  Should I continue to play with the zhop and retraction speeds or try something else?

3. My extrusion multiplier is tuned for my filament and I am getting correct extrusion widths, however I am still getting just a hint of over extrusion on the corners of square prints. Turning off wiping has reduced it alot but its not gone. Should I continue to reduce my extrusion multiplier until the corner over extrusion is gone still? Wouldn't that make my extrusion widths incorrect?

Posted : 22/06/2022 3:42 pm
Diem
 Diem
(@diem)
Famed Member

Stop obsessing.

Reset everything to defaults (ok, save a copy for later first).

Run the XYZ calibration if you have not yet done so.

Run a first layer Z calibration - show us the calibration print *on the print sheet* if you're unsure.

And start printing.

Every user builds their printer slightly differently and pre-built models are shaken up in transit so during the first few weeks of use the printer will run-in and settle its parts together; then you will have to go over the basic maintenance checks, lubricate and recalibrate. Even if you got everything dialled in perfectly today, it would all need re-doing.

Better to settle, temporarily, for a basic working printer and get some useful printing done, make your early mistakes, establish a routine and generally get used to the process. Then when you do your one month service you can take extra care knowing the new settings on your now stable printer are likely to last for several months.

Cheerio,

 

Posted : 22/06/2022 6:29 pm
jsw
 jsw
(@jsw)
Noble Member
RE: Correct Order of Calibration?

I agree mostly with Diem.

I've found through experience that things such as LA, EM, retraction seldom if ever need to be set away from the well-behaved default.

Temperature, maybe, if needed, but I've found that there is a lot of wiggle room.  I've only found one brand of filament (Mika3D) which needs a temperature other than the default for PLA.

Z calibration, however, can be critical.  Most folks start with the internal Z calibration and get that dialed in, then go to either one of those 3x3 square things or one of the larger single-rectangle prints to check for any front/rear and/or left/right tweaking that needs to be done.

The proof will be the visual quality and the consistency of your prints.  I daresay that a print done with tweaked LA/EM/whatever will seldom be distinguishable from one using defaults.

Posted : 22/06/2022 9:05 pm
AZXCIV
(@azxciv)
Active Member
Topic starter answered:
RE:

Thanks for the input guys. My first layer is dialed in. 

Looking to tweak some things because my prints look good, but I have some zits in my layers during prints (stock). Adjusting my extrusion width seems to have solved most of that, just now my top layer is not smooth (yes i re adjusted my z after extrusion width). 

Posted : 22/06/2022 11:56 pm
Swiss_Cheese
(@swiss_cheese)
Noble Member
RE: Correct Order of Calibration?

@azxciv

 

In order the summon bobstro you have to say his name three times, like @Beetlejuice,@Beetlejuice,@Beetlejuice.

 

Good Luck 😉 

 

Swiss_Cheese

The Filament Whisperer

Posted : 23/06/2022 12:28 am
AZXCIV
(@azxciv)
Active Member
Topic starter answered:
RE: Correct Order of Calibration?

LOL!

@bobstro , @bobstro , @bobstro ! 

Posted : 23/06/2022 1:06 am
Swiss_Cheese
(@swiss_cheese)
Noble Member
RE: Correct Order of Calibration?

🤣 👍

The Filament Whisperer

Posted : 23/06/2022 1:13 am
cwbullet
(@cwbullet)
RE: Correct Order of Calibration?

 

Posted by: @diem

Stop obsessing.

Reset everything to defaults (ok, save a copy for later first).

Run the XYZ calibration if you have not yet done so.

Run a first layer Z calibration - show us the calibration print *on the print sheet* if you're unsure.

And start printing.

Every user builds their printer slightly differently and pre-built models are shaken up in transit so during the first few weeks of use the printer will run-in and settle its parts together; then you will have to go over the basic maintenance checks, lubricate and recalibrate. Even if you got everything dialled in perfectly today, it would all need re-doing.

Better to settle, temporarily, for a basic working printer and get some useful printing done, make your early mistakes, establish a routine and generally get used to the process. Then when you do your one month service you can take extra care knowing the new settings on your now stable printer are likely to last for several months.

Cheerio,

 

This makes sense.  When you get confused and can't figure it out, going back to factory settings will help you better converse with support via chat.  

--------------------
Chuck H
3D Printer Review Blog

Posted : 23/06/2022 1:34 am
AZXCIV
(@azxciv)
Active Member
Topic starter answered:
RE: Correct Order of Calibration?

I realize how profound this advice was last night. While my prints are not as crisp as I'd like, I actually had fun when I pulled something off the plate that was not a calibration piece. Calibrating isn't really that fun when you obsess over it constantly. Lesson learned.

But when im ready just so I know. Whats the correct order to do things? Not planning to do so until i get my first 200 hours of print time in.

Posted : 23/06/2022 1:09 pm
Diem
 Diem
(@diem)
Famed Member

The most likely first one to matter will be temperature; most of us have a spool or two marked "+10C" or similar.  You should stick to high quality filament at first but once you are confident and begin to buy cheaper stuff for prototyping the next calibration will be measurements of the filament thickness.

Neither of these affect basic settings, just create a profile for the filament concerned until the spool runs out.. 

The single commonest calibration is first layer Z offset, it will drift over time as your nozzle wears but until you get into exotic filaments once every couple of months will do.

Everything else can safely be ignored until you begin to see symptoms, usually when you have some testing parameters to meet.

Cheerio,

Posted : 23/06/2022 2:22 pm
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