Really appreciate this calibration test. With a couple of prints I was able to go from ~0.43% XY error and ~0.23° skew to ~0.04% XY error and 0.06° skew. Trickiest thing is getting your calipers squared up with the part when taking measurements. Wonder if as another suggested having notches for this would help.
Great stuff - I've always been dissatisfied with the so-called calibration cubes, and instead printed much larger strips etc - but haven't been measuring internal dimensions (obvious as soon as you said it that's needed!), and just never thought to check skew, wasn't aware it was something that could be accounted for in the firmware! A new dawn of dimensionally accurate prints awaits!
Very nice indeed! I have printed some 5 or 6 cubes in a year on 11 printers as i never thought it has any real use at 2x2x2cm, but i did print a 50x50x50 once as it is more useful for accuracy.. This video changes that! 😃
Looking good, will definitely get this for my next calibration :D One thing I would find interesting would be skew/accuracy of the z axis, as I feel this is the weakest link in a lot of 'cheap' printers
Thanks for taking the time to do this mate. I just got a 3D printer and did a cube calibration and was wondering how to correct the settings and in youtube i found this video. THanks again.
My first reaction was: Interesting method, I'll try it for sure. Clicked the link, payed content. That's a bummer. Checking the site: No proper imprint, no way to switch off cookies, but a director position. Wondering if this is legal at all but for sure there is no way that I'll enter my credit card information on such site.
UK is no longer part of the EU, so i don´t exactly know how GDPR affects him, but afaik he should have at least a Cookie Banner and an Impressum and a Data Policy to even have his site available in the EU.
@@MrBlackFiction I don't know the legals either but it doesn't build up trust in the site like it is now. I know that Paypal, apple pay, google pay etc do cost money, but it feels less scatchy for the customer / me.
5 Euro for this invention and an Excel file. Come on. That's ridiculous. I absolutely despise this grifting taking root in the 3D printing community. There would be no Vez TH-cam or Vezbot if the original Reprap people had all had a Patreon paywall or webshop. If you're not capable to get a real job, at least sell actual hardware!
@@testboga5991 is it ridiculous though? This guy spent quite a few man hours to produce this design and you have probably wasted a few trying to calibrate your printer, so why so salty? And your last sentence is really baffling. Anything that produces value to others is a 'real job' or entrepreneurship, to be exact.
It actually makes sense! Nice idea for calibration that isn't just the classic (terrible) tweaking x/y/z steps/mm until your calibration cube measures 20.00
A possible enhancement to the flower would be notches the width of the calipers jaw along the measuring edges. This would help to measure squarely as the jaws would sit in the notches I think ?
Wow, that’s awesome. Better printing 2-3 of this flowers instead of 20 cubes. Voron cubes are nice to indicate lots of things, but xyz calibration normally sucks
I have an older CR-10S printer and use Cura as a slicing program. There is an add on for Cura called skew compensation. I found this add on to be really useful and it was quite an eye opener to discover that my precious printer was not all that accurate on the three basic planes as I expected it to be ! It was even out by a fraction of a degree on the XY plane. Fortunately, the fix for this plane required a relatively quick and flat print and a bit of basic algebra. For the other two planes I designed a kind of pulley with a sturdy axial piece and printed a few. I am fortunate to have a large old Meccano set and built myself a test rig to analyze the wobble on a number of these test pulleys. After about 5 or 6 tries I had the wobble reduced to virtually zero. This was a very interesting project on its own !
I have often thought the letter on the cube will mess the measurements I tend to use a temp tower and a flow topless cube for my measurements but will try yours for sure
Using the filament shrinkage setting in superslicer with a very small value, eg 99.965% results in lots of overextrusion and print looking crappy. Ultimately after hours of work to arrive at the desired adjustment value, the recommended strategy does not work. Tried with the current stable release and nightly build, same results. If perhaps I could access the source files in the protected spreadsheet, I could calculate an XY compensation factor, which requires an absolute value rather than a percentage. Recommendation: if you are going to protect the sheet, provide the values we need to plug into the slicer too for both SS shrinkage and XY compensation factor.
Started printing models with gears and several parts interacting with one another and noticed some dimensional inaccuracies. Thanks for the content! I'll be calibrating this way for now on!
Just bought this! I've been printing some multipart pieces that did sort of fit-but-not-really, and i was already on the edge of buying this. Seeing how the parts ended up fitting, i bit the bullet. Being 00:11AM here i may not print the flower just now, but i'm already testing the bridge part. Cheers!
Ran this on mine and my errors were 0.02, 0.02, 0.06 so not bad. This is a great tool to check for accuracy and the excel file is great addition. Well done!
You're correct, this is a superior measurement system for calibration. My only concern with this method (as its not described in the video) is how you're determining/separating form from position. All measurements are measurements of form/size. Whereas, I believe, skew would be a measurement of POSITION. This means that all measurements relating to skew (or features out of place) should originate from the same feature, ie a Datum. You could do this by applying a cylindrical feature in the center of the part and cylindrical features at the diagonals and measure center-line to center-line for these lengths. This would probably yield less than 3% improvement, but for accuracy sake... now you know.
I found that the best way to adjust step/mm is actually to measure the physical x y z movement of the printhead , 3d printed objects tend to shrink when cooled.
I bought a dial indicator exactly for that reason. That being said, I have never attempted so many measurements on a calibration print, and never for skew, so I’ll be giving this new method a try.
Yes, this measures the actual filament after shrinkage. its designed to adapt a tuned printer to produce parts that are dimensionally accurate after printing and cooling.
First of all thank you designing this tool. I printed one ,measured, then did the adjustments on the printer saved the settings. Round two same thing. It was worse than the first one . Back to square one with the measurements. Round eight still no better than the original settings . Decided to go back to what I had in the beginning.
Ah, I found it by going to the shop and looking for it. Might be nice to mention this is £5 on this video's description. I will order one later today, seems well worth it.
I bought the STL and read the instructions. Basically, what you're getting at is that we should get accurate prints by changing the E-steps and rotation distance (also account for Skew)? I have always used horizontal expansion to get accurate prints but the approach here is different. Am I correct in these assumptions? Should I never depend on horizontal expansion again? Will changing rotation distance really carry over dimensional accuracy to other models and prints?
Love the design, thanks for sharing! My go-to calibration object has always been the "5 mm calibration steps" (scaled 2x because 5 mm is too puny for a 0.4 mm nozzle): it has the same advantages of internal + external dimensions for measurement, but also has a little section for bridging, and the progressively smaller tiers also let you gauge the cooling (increasing "overextrusion" at higher Z is usually a symptom of insufficient cooling in my experience). But it doesn't have anything for skew, which is something I've never even thought about before, so I'll definitely be giving your flower a shot 🙂
Have you considered caliper tolerances in these measurements. Maybe there is nothing to change if it's readings are in tolerances of your calipers. By the way this will differ between Prusa Slicer and Cura because Cura calculate rectangle area for line protection, therefore 0.4 mm thick line which is 0.2 mm high, will be arround 0.44mm wide if you print with 100% flow for outer walls (extrusion multiplier)
I have just used this very successfully to calibrate my Ender 3 V2 Pro. I have two suggestions for improving the excel spread-sheet. I'm using the Orca slicer and entered the shrinkage compensation value. However, on a 2nd calibration run the compensation value suggested by your spread-sheet doesn't take into account the currently set shrinkage value. It is an easy calculation to do, but would help if you could enter the current shrinkage value so that it does the calculation for you. An unlocked area would be useful for entering comments on changes made.
I printed it on my Core XY but I have two questions about the excel file: 1. The file says "If you have CoreXY, X and Y are 'locked' to each other so use the average of the two errors." But wouldn't it be better to rotate the print by 45° to be exactly on the axis and have x and y seperate rather than getting just the average? 2. My part turned out slightly to small so the file suggests to either Scale the Part up in the slicer or adjust the Steps but if I decide for the later, if I understand correctly the printer will move a further distance without knowing that it also has to extrude more material to make up for the now bigger part did the file already calculate with that or do I have to adjust the extruder after this aswell?
I spent ages making adjustments to get a calibration cube 20.00mm on all measurements on an Ender 3, I am curious to know how this machine will fare with the flower calibration
Thanks for the great work, I really appreciate it! However, after printing and measuring, I'm a bit lost what to do with the results. I understand how to process the skew value, but where do the X and Y values go? In the video you mention the x/Y Shrinkage setting in SuperSlicer, but that's one value, but I have two different values for X and Y - so which one to apply where and how? Maybe I'm missing something really obvious, but atm, I think this part could use a little more detail. A quick pointer where to put which value would be greatly appreciated.
I'd be curious to see how this calibration flower stacks up against teaching techs website and presliced models to dial in a printer. I think I'll use this on my son's printer as mine is pretty heavily molded, and he's got a stock ender 3.
Very nice. One issue with most calibration objects is they can be impacted by elephant’s foot (which is an issue to be resolved separately from E steps). Does this have chamfers to prevent elephant’s foot from impacting the measurements?
When I put in the skew in the Klipper command window, it says "Unknown command:"SET_SKEW"" Do I just add "[skew_correction]" to the printer.cfg or are there additional settings I need to go with it?
Hello and thanks a lot for this video. I bought your Calibration flow, print the calibration flower on my Prusa Mini, log the measurements in the calibration calculator. OK, and now ? i'm lost.... As i can't update the Marlin's firmware of the Prusa, how can i make adjustments ? I found a X correction of 0.25% and Y correction of 0.40%. The skew correction is 0.29°. I don't know how using these measurements in the prusaSlicer.... Sorry for my English, i'm French 😉
Great tool! thanks! The description says: "If you have CoreXY...use the average of the errors". But where do I put the error? the spreadsheet does not account for CoreXY then. also: The inner an douter errors have hitns when inner is neg and outer is positive and vice versa. But mine are both negative. what does that mean?
My first thought was "What? £5 for an STL that I'll print once?", but then my brain went, "The guy has a point, it's really brilliantly designed, that's worth a cup of coffee!". Good job, sir!
What Spreadsheet programs does this work with? Is it Excel-only, or should it work with the likes of LibreOffice Calc and other StarOffice Calc derivatives?
The whole frame/body of the flower is 5mm wide is most places so as long as long as your nozzle can draw that, you should be fine with any nozzle size.
@@Vector3DPawesome!!! Thank you so much! so probably not any 2.6mm nozzles? Jk... That would be an INSANE nozzle and it would just burn through filament! I already think those 1.8mm CHT nozzles are Insane. It's mind boggling to think you nozzle hole is larger than the filament centering the nozzle. Lol Thanks again!
Thanks for it, I bought it. Question... I can adjust the XYZ Axis steps on my display. (Marlin Community Firmware) What should I input if the Settings are not in prozent? Example: X=80, Y=100 and Z=400.
Wonderful good sir ! This seems like very valuable time and effort I can’t wait to start checking all my printers with this test! Ty very much for all your hard work here sir. !
After I print a flower and use the Skew Calibration in reprapfirmware. when I print the 2nd test to check results. How do I compensate for existign Skew. when it recalculates?
yeah, if I remember correctly, the Skew compensation is M556 for reprap, so if you have your skew angle, you can input: M556 S100 X[100*sin(skew_angle)] Y0 Z0 Obviously, complete the calculation with the sin() seperate and just input the result into the gcode command. Y and Z are zero because those represent YZ and XZ skew respectively.
Nice. Just wondering if you have made any allowance for elephants foot? This tends to screw up dimensional measurements for anything on the the print bed unless you are that rare person who has perfectly levelled your bed and set the correct z offset, etc. I know that I tend to err in being a little too close to the bed to get good first layer adhesion.
Yes, was also wondering about the Horizontal Expansion that I ordinary use to make mechanical prints? I do not suppose this value will affect your test results though, as you are averaging inside and outside measurements.
Used this system to calculate error but for a Prusa Mini, where would I add the calibration error? For XY shrinkage should I add it to printer firmware or in the Prusa Slicer settings? Make it filament specific? What about skew correction?
Any ideas on how to apply the results from a califlower print to a Bambu X-1. While my correction factors are small, I have a large part thats very reliant on dimensional accuracy. I see in "Printer Settings" that I can add/modify the start and end g-code and its Marlin (legacy) flavor but I don't understand where to add the worksheet code.
Currently printing this on all my 5 FDM printers ,i do have a question, my tenlog and ender 5 plus i don't have access to the firmware so i won't be able to change the skew correct??? And does the nozzle size matters for this calibration?
Does your Excel Sheet has a fault? At minute 6:24 your Y error result should be -0,62% and not in -0.69% accounting the measurements from 5, 6, 7 and 8.
Hello, think you vor this nice Tool. I have a question on this Thema: I have a Prusa Mini can I put the Correction parameter in the Start-G-Code. Or what should I do?
Bought the test and ran it on E3D toolchanger. Skew 0.32° off! -> Unscrewed the Y axis and put it back on the square, re-tensioned the belt -> 0.01°. Quite disappointed that E3D give a machine in such a bad calibration. It would be interesting to have some data on flow regulation, do you have any ideas?
Well, not with this design, no. The thing with those direction and this method is that it requires printing 45degree overhangs which will have inaccuracy of their own. I'll try to think of something though
Very clever approach, I think this is first skew and multipoint single print calibration I've actually had faith in.
Really appreciate this calibration test. With a couple of prints I was able to go from ~0.43% XY error and ~0.23° skew to ~0.04% XY error and 0.06° skew. Trickiest thing is getting your calipers squared up with the part when taking measurements. Wonder if as another suggested having notches for this would help.
Hello! He actually updated the flower to make measuring with the calipers easier
Great stuff - I've always been dissatisfied with the so-called calibration cubes, and instead printed much larger strips etc - but haven't been measuring internal dimensions (obvious as soon as you said it that's needed!), and just never thought to check skew, wasn't aware it was something that could be accounted for in the firmware! A new dawn of dimensionally accurate prints awaits!
You can tell a lot of effort went into this :) I just purchased it from your store. Keep up the good work
Very nice indeed! I have printed some 5 or 6 cubes in a year on 11 printers as i never thought it has any real use at 2x2x2cm, but i did print a 50x50x50 once as it is more useful for accuracy.. This video changes that! 😃
wow, you printed 50cm cube for testing? 😄
Looking good, will definitely get this for my next calibration :D
One thing I would find interesting would be skew/accuracy of the z axis, as I feel this is the weakest link in a lot of 'cheap' printers
Thanks for taking the time to do this mate. I just got a 3D printer and did a cube calibration and was wondering how to correct the settings and in youtube i found this video. THanks again.
My first reaction was: Interesting method, I'll try it for sure. Clicked the link, payed content. That's a bummer. Checking the site: No proper imprint, no way to switch off cookies, but a director position. Wondering if this is legal at all but for sure there is no way that I'll enter my credit card information on such site.
UK is no longer part of the EU, so i don´t exactly know how GDPR affects him, but afaik he should have at least a Cookie Banner and an Impressum and a Data Policy to even have his site available in the EU.
@@MrBlackFiction I don't know the legals either but it doesn't build up trust in the site like it is now. I know that Paypal, apple pay, google pay etc do cost money, but it feels less scatchy for the customer / me.
5 Euro for this invention and an Excel file. Come on. That's ridiculous. I absolutely despise this grifting taking root in the 3D printing community. There would be no Vez TH-cam or Vezbot if the original Reprap people had all had a Patreon paywall or webshop. If you're not capable to get a real job, at least sell actual hardware!
@@testboga5991 is it ridiculous though? This guy spent quite a few man hours to produce this design and you have probably wasted a few trying to calibrate your printer, so why so salty?
And your last sentence is really baffling. Anything that produces value to others is a 'real job' or entrepreneurship, to be exact.
It actually makes sense! Nice idea for calibration that isn't just the classic (terrible) tweaking x/y/z steps/mm until your calibration cube measures 20.00
A possible enhancement to the flower would be notches the width of the calipers jaw along the measuring edges. This would help to measure squarely as the jaws would sit in the notches I think ?
What a great way to get better dimensional accuracy measurements. Love it!
Great contribution to our Community! Thank you!
Wow, that’s awesome. Better printing 2-3 of this flowers instead of 20 cubes. Voron cubes are nice to indicate lots of things, but xyz calibration normally sucks
This is great, I calibrated my Voron 2.4 printer with it and since I did it in ASA I can now use it as a impromptu coaster haha. Thank you very much
Thanks for this. The video from Stefan brought me here.
I wish you the best outcome in this difficult period (I went through it 3 years ago).
I have an older CR-10S printer and use Cura as a slicing program. There is an add on for Cura called skew compensation. I found this add on to be really useful and it was quite an eye opener to discover that my precious printer was not all that accurate on the three basic planes as I expected it to be ! It was even out by a fraction of a degree on the XY plane. Fortunately, the fix for this plane required a relatively quick and flat print and a bit of basic algebra. For the other two planes I designed a kind of pulley with a sturdy axial piece and printed a few. I am fortunate to have a large old Meccano set and built myself a test rig to analyze the wobble on a number of these test pulleys. After about 5 or 6 tries I had the wobble reduced to virtually zero. This was a very interesting project on its own !
I have often thought the letter on the cube will mess the measurements I tend to use a temp tower and a flow topless cube for my measurements but will try yours for sure
Good work! I noticed you even made sure to chamfer the edges and the bottom for even extrusion and to avoid elephant’s foot.
I was curious about this and the potential effects of that, This just sealed it for me that I'll try this soon
Thankyou. Finally can print something accurate. Being stgruggling with this for years. Now I can print usefull things. 0.11% X, 0%Y and 0.01 skew.
Hello, Adam, you just won yourself a new subscriber ;-)
Thanks a lot!
Using the filament shrinkage setting in superslicer with a very small value, eg 99.965% results in lots of overextrusion and print looking crappy. Ultimately after hours of work to arrive at the desired adjustment value, the recommended strategy does not work. Tried with the current stable release and nightly build, same results. If perhaps I could access the source files in the protected spreadsheet, I could calculate an XY compensation factor, which requires an absolute value rather than a percentage. Recommendation: if you are going to protect the sheet, provide the values we need to plug into the slicer too for both SS shrinkage and XY compensation factor.
Started printing models with gears and several parts interacting with one another and noticed some dimensional inaccuracies. Thanks for the content! I'll be calibrating this way for now on!
Just bought this! I've been printing some multipart pieces that did sort of fit-but-not-really, and i was already on the edge of buying this. Seeing how the parts ended up fitting, i bit the bullet. Being 00:11AM here i may not print the flower just now, but i'm already testing the bridge part. Cheers!
Ran this on mine and my errors were 0.02, 0.02, 0.06 so not bad. This is a great tool to check for accuracy and the excel file is great addition. Well done!
Thanks
no no no, Thank YOU!
Was able to go from 0.2 tolerance to 0.1 tolerance on a tolerance coin test, thanks!
You're correct, this is a superior measurement system for calibration. My only concern with this method (as its not described in the video) is how you're determining/separating form from position. All measurements are measurements of form/size. Whereas, I believe, skew would be a measurement of POSITION. This means that all measurements relating to skew (or features out of place) should originate from the same feature, ie a Datum. You could do this by applying a cylindrical feature in the center of the part and cylindrical features at the diagonals and measure center-line to center-line for these lengths. This would probably yield less than 3% improvement, but for accuracy sake... now you know.
You mean like how a ball-bar test checks movement?
Not gunna lie, I'd love to be able to do that ki d of test on my printer
I found that the best way to adjust step/mm is actually to measure the physical x y z movement of the printhead , 3d printed objects tend to shrink when cooled.
I bought a dial indicator exactly for that reason. That being said, I have never attempted so many measurements on a calibration print, and never for skew, so I’ll be giving this new method a try.
Yes, this measures the actual filament after shrinkage. its designed to adapt a tuned printer to produce parts that are dimensionally accurate after printing and cooling.
First of all thank you designing this tool. I printed one ,measured, then did the adjustments on the printer saved the settings.
Round two same thing. It was worse than the first one . Back to square one with the measurements.
Round eight still no better than the original settings .
Decided to go back to what I had in the beginning.
You only need to do once.
Many thanks. I will be using that tomorrow after tweaking some mechanical settings today.
Or maybe not. Page not found when I try to get the files.
Ah, I found it by going to the shop and looking for it. Might be nice to mention this is £5 on this video's description. I will order one later today, seems well worth it.
I bought the STL and read the instructions. Basically, what you're getting at is that we should get accurate prints by changing the E-steps and rotation distance (also account for Skew)? I have always used horizontal expansion to get accurate prints but the approach here is different. Am I correct in these assumptions? Should I never depend on horizontal expansion again? Will changing rotation distance really carry over dimensional accuracy to other models and prints?
Thanks for this. Just purchased the files and I'm starting a new set of calibration prints. Cheers!
Brilliant👍. I am in the middle of calibrating my printer and profiles do perfect timing. I have always found the calibration cubes less than ideal.
How do you put the skew factor into a Prusa MK4 printer? In the Prusa slicer - I don't see how? In G-code? Someplace else?
Sadly Mk4 doesn't have facility to add skew correction as far as i know. sorry.
5:40 can you also use these for PLA and other filaments?
Nice of you to share, thanks!
My pleasure!
Love the design, thanks for sharing! My go-to calibration object has always been the "5 mm calibration steps" (scaled 2x because 5 mm is too puny for a 0.4 mm nozzle): it has the same advantages of internal + external dimensions for measurement, but also has a little section for bridging, and the progressively smaller tiers also let you gauge the cooling (increasing "overextrusion" at higher Z is usually a symptom of insufficient cooling in my experience). But it doesn't have anything for skew, which is something I've never even thought about before, so I'll definitely be giving your flower a shot 🙂
Awesome, thanks for helping our the 3DP community!
Lovely stuff you bring to the community! This will be a great tool for freshly built diy printers to make sure they are true and correct.
Absolutely!
Have you considered caliper tolerances in these measurements. Maybe there is nothing to change if it's readings are in tolerances of your calipers. By the way this will differ between Prusa Slicer and Cura because Cura calculate rectangle area for line protection, therefore 0.4 mm thick line which is 0.2 mm high, will be arround 0.44mm wide if you print with 100% flow for outer walls (extrusion multiplier)
Does the skew correction value changes when tighten belts right?
Hi, already purchased this, but want to purchase XYZ also, is there any video regarding that ?
Thank you. I am excited to calibrate.
I have just used this very successfully to calibrate my Ender 3 V2 Pro. I have two suggestions for improving the excel spread-sheet.
I'm using the Orca slicer and entered the shrinkage compensation value. However, on a 2nd calibration run the compensation value suggested by your spread-sheet doesn't take into account the currently set shrinkage value. It is an easy calculation to do, but would help if you could enter the current shrinkage value so that it does the calculation for you.
An unlocked area would be useful for entering comments on changes made.
I appreciate the thought and the effort you put into this. Your excel and pdf are what convinced me it is worth purchasing.
Awesome, thank you! I do try and go beyond just the model because making sure you use it correctly makes a huge difference to the success. Enjoy :)
Will test this right now !!!!
how do you calibrate for z axis?
Absolutely brilliant! I hope you use that congratuling yourself step liberally! Thank you for sharing this.
In Superslicer you entered 99.35 for Shrinkage. but were is this value in your excel? where does it come from?
I printed it on my Core XY but I have two questions about the excel file:
1. The file says "If you have CoreXY, X and Y are 'locked' to each other so use the average of the two errors." But wouldn't it be better to rotate the print by 45° to be exactly on the axis and have x and y seperate rather than getting just the average?
2. My part turned out slightly to small so the file suggests to either Scale the Part up in the slicer or adjust the Steps but if I decide for the later, if I understand correctly the printer will move a further distance without knowing that it also has to extrude more material to make up for the now bigger part did the file already calculate with that or do I have to adjust the extruder after this aswell?
I spent ages making adjustments to get a calibration cube 20.00mm on all measurements on an Ender 3, I am curious to know how this machine will fare with the flower calibration
Ordered, Thank you!
Hi hi! Nice video. How i fix the skew on a Bambu Lab P1S?
I have Prusa i3 mk3 where do I add step/mm info and rotation dist. Thanks.
Looks more like a waffle than a flower 😛
SHhhhhh, nobody noticed. 😉
Thanks for the great work, I really appreciate it! However, after printing and measuring, I'm a bit lost what to do with the results. I understand how to process the skew value, but where do the X and Y values go? In the video you mention the x/Y Shrinkage setting in SuperSlicer, but that's one value, but I have two different values for X and Y - so which one to apply where and how? Maybe I'm missing something really obvious, but atm, I think this part could use a little more detail. A quick pointer where to put which value would be greatly appreciated.
V6 spreadsheet with more guidance and details on implementation coming soon.
@@Vector3DP Fantastic news! Thanks so much.
I'd be curious to see how this calibration flower stacks up against teaching techs website and presliced models to dial in a printer.
I think I'll use this on my son's printer as mine is pretty heavily molded, and he's got a stock ender 3.
Interesting new approach 👍😀
I wil give it a go soon
Thanks for sharing your experience with all of us 👍🙂
No problem 👍
It's great that Michael Falk found a new career after his news gig
Does this show how to work it in Cura?
Very nice.
One issue with most calibration objects is they can be impacted by elephant’s foot (which is an issue to be resolved separately from E steps).
Does this have chamfers to prevent elephant’s foot from impacting the measurements?
Of course it does :)
@@Vector3DP you’re too good!
When I put in the skew in the Klipper command window, it says "Unknown command:"SET_SKEW"" Do I just add "[skew_correction]" to the printer.cfg or are there additional settings I need to go with it?
Ye, you're right, you need to add the section to printer.cfg.
Bought it! Thank you! Nice done!
Where can I get the spreadsheet? Link in description doesn't seem to work anymore
Link updated, should work now
@@Vector3DP ayyy thank you!
Hello and thanks a lot for this video. I bought your Calibration flow, print the calibration flower on my Prusa Mini, log the measurements in the calibration calculator. OK, and now ? i'm lost.... As i can't update the Marlin's firmware of the Prusa, how can i make adjustments ? I found a X correction of 0.25% and Y correction of 0.40%. The skew correction is 0.29°. I don't know how using these measurements in the prusaSlicer.... Sorry for my English, i'm French 😉
Great tool! thanks!
The description says: "If you have CoreXY...use the average of the errors". But where do I put the error? the spreadsheet does not account for CoreXY then.
also: The inner an douter errors have hitns when inner is neg and outer is positive and vice versa. But mine are both negative. what does that mean?
My first thought was "What? £5 for an STL that I'll print once?", but then my brain went, "The guy has a point, it's really brilliantly designed, that's worth a cup of coffee!". Good job, sir!
Thank you, I'm glad you changed your mind 😊
question: how do you correct skew in RRF?
Why does Klipper not accept SET_SCEW XY command?
What Spreadsheet programs does this work with? Is it Excel-only, or should it work with the likes of LibreOffice Calc and other StarOffice Calc derivatives?
There is a ods version as well as an xlsx version.
Is this compatible with only specific size nozzles? Or will any nozzle work (I'd like to use a 0.6mm)
The whole frame/body of the flower is 5mm wide is most places so as long as long as your nozzle can draw that, you should be fine with any nozzle size.
@@Vector3DPawesome!!! Thank you so much!
so probably not any 2.6mm nozzles? Jk... That would be an INSANE nozzle and it would just burn through filament! I already think those 1.8mm CHT nozzles are Insane. It's mind boggling to think you nozzle hole is larger than the filament centering the nozzle. Lol
Thanks again!
Thanks for it, I bought it. Question... I can adjust the XYZ Axis steps on my display. (Marlin Community Firmware) What should I input if the Settings are not in prozent? Example: X=80, Y=100 and Z=400.
Wonderful good sir ! This seems like very valuable time and effort I can’t wait to start checking all my printers with this test! Ty very much for all your hard work here sir. !
sounds intresting, but would it be useable for an belt printer ? like CR30
Probably not.
You could still determine accuracy, but the calculated adjustments wouldn't be correct
After I print a flower and use the Skew Calibration in reprapfirmware. when I print the 2nd test to check results. How do I compensate for existign Skew. when it recalculates?
Unfortunately you can't but from the results I've seen you shouldn't actually need to do this iteratively.
I'm such a nube and so lost where do I Input these corrections once I get the measurements... I use cura ..
Is the size of the print still the best choice if you have a 500X500mm print bed, or would a larger version make sense?
Great video. You have given this obessive tinkerer a new goal!
Is the possible with duet, Reprap?
yeah, if I remember correctly, the Skew compensation is M556 for reprap, so if you have your skew angle, you can input:
M556 S100 X[100*sin(skew_angle)] Y0 Z0
Obviously, complete the calculation with the sin() seperate and just input the result into the gcode command. Y and Z are zero because those represent YZ and XZ skew respectively.
Nice. Just wondering if you have made any allowance for elephants foot? This tends to screw up dimensional measurements for anything on the the print bed unless you are that rare person who has perfectly levelled your bed and set the correct z offset, etc. I know that I tend to err in being a little too close to the bed to get good first layer adhesion.
Yes, a chamfer around the bottom edge of the print deals with that.
@@Vector3DP cool, thanks
Yes, was also wondering about the Horizontal Expansion that I ordinary use to make mechanical prints?
I do not suppose this value will affect your test results though, as you are averaging inside and outside measurements.
Used this system to calculate error but for a Prusa Mini, where would I add the calibration error? For XY shrinkage should I add it to printer firmware or in the Prusa Slicer settings? Make it filament specific? What about skew correction?
Any ideas on how to apply the results from a califlower print to a Bambu X-1. While my correction factors are small, I have a large part thats very reliant on dimensional accuracy. I see in "Printer Settings" that I can add/modify the start and end g-code and its Marlin (legacy) flavor but I don't understand where to add the worksheet code.
Will the Excel sheet work in Libre office too?
Yes, just opened and tried it, seems to work exactly the same.
Congratulations! I like this calibration tool and I seems good price 6 euros for your effort and intelligence
Currently printing this on all my 5 FDM printers ,i do have a question, my tenlog and ender 5 plus i don't have access to the firmware so i won't be able to change the skew correct???
And does the nozzle size matters for this calibration?
Bought so my wife wouldn't think the Mitutoyo calipers I wanted for Christmas weren't a waste... :)
Does your Excel Sheet has a fault? At minute 6:24 your Y error result should be -0,62% and not in -0.69% accounting the measurements from 5, 6, 7 and 8.
Nope, it works correctly.
Hello, think you vor this nice Tool.
I have a question on this Thema:
I have a Prusa Mini can I put the Correction parameter in the Start-G-Code.
Or what should I do?
Can I adjust skew in other firmware, for example Marlin or Repetier ?
Yep, code do it in marlin is included. Not sure on repetier
Is there a way to input the correction code into duet printers?
Well .. I don't think I can get better than this. On a Tenlog TL-D3 Pro, ran the calib flower and got a skew of 0.0012 ... on first run 😁😁😁
The sheet shows separate correction for X and Y but shrinkage in PrusaSlicer is a single value for XY. What to do?
He just averaged them. Ex: -0.5% for X and -0.9% for Y, you'd avg to -0.7% and input 99.3 into prusaslicer ( assuming it's the same as superslicer)
The web page doesn't load when I got to the link, it's got a blank site without any content just your theme.
Nvm it's working on a different computer so it's on my end
I’m new to this. May I ask on how to do it on simplify3d? Thank you all
Bought the test and ran it on E3D toolchanger.
Skew 0.32° off! -> Unscrewed the Y axis and put it back on the square, re-tensioned the belt -> 0.01°. Quite disappointed that E3D give a machine in such a bad calibration.
It would be interesting to have some data on flow regulation, do you have any ideas?
Question... how do i "calibrate" exactly?
Very cool, would love to try it. Is there a compensation needed for different nozzle sizes? I am using 0.6mm.
Cool idea as always! Is there a way To calibrate skew on XZ and YZ too?
Well, not with this design, no. The thing with those direction and this method is that it requires printing 45degree overhangs which will have inaccuracy of their own. I'll try to think of something though
Awesome, I’ll be doing this for my Ender 3 right now
Cool, and ain't to expensive considering the effort put. If I buy now am I entitled to get future revisions free of charge?
Yes, updates to this design all included in the purchase.
Hi, this is an awesome piece of work and hugely appreciated. Question - will this also be valid to use on a Delta printer?
Yes, absolutely.
@@Vector3DP purchased, well worth the very small investment and a huge value. Thanks for the work!