Box lid doesn't fit
Hi guys! I'm struggling with a box that I realized by myself. My box has a top and a bottom parts that fit together with screws. As you can see from Fusion360 the measures are ok and the two part fits perfectly. But after printed them I noticed that the lid doesn't fit with the box...it fits only if I turn it upside down...I tried to change print orientation, to export from Fusion360 with different orientations but nothing... it doesn't work...could you help me?
22 Replies
rival-blackOP•2y ago
Obviously even if I posted a picture that the box has a different orientation in the slicer plate, I also tried, as I said in the previous post, to export from Fusion with that orientation too...but nothing..
if the box is a simple rectangle, and it's misaligned like that due to different print orientation, your printer might be skewed, measure length of diagonals in your box, if they don't match your x and y axis aren't perpendicular to each other.
If that's the case, it's best to try fixing it physically by adjusting the build. small skew can be also fixed with software: https://www.klipper3d.org/Skew_Correction.html
rival-blackOP•2y ago
Ok @pravvv I'm trying to fix with screw correction..I'll let you know, thanks!
I did screw corrections and created a profile with this result:
## [skew_correction vminion]
## xy_skew = -0.011364003572021884
## xz_skew = 0.0
## yz_skew = 0.0
but box lid still does not fit....
did you use calipers to measure what got printed actually matches your design?
rival-blackOP•2y ago
by design measures should be 126mm (w) x 90.897 (h)
with calipers: 125.35mm (w) x 89.78mm (h)
rival-blackOP•2y ago
what is your shrinkage rate?
rival-blackOP•2y ago
where I can read it?
depends on the slicer, in super slicer:
rival-blackOP•2y ago
I'm on Orca. Anyway I find it, 100%
What I do is print the 100mm stl this guy mentions and use that to calibrate the shrinkage (after I have done flow calibration)
https://www.youtube.com/watch?v=lYmFXrmC5p0
Collect3D
YouTube
A Better Way To Calibrate Your 3D Printer. Importance of Dimensiona...
Hey everyone. I want to talk about the importance of dimensional accuracy when running a 3D Print farm and selling products. I hope the information is useful to you and helps you achieve the highest level of accuracy for your products. Thanks for watching.
link to calibration print: https://www.thingiverse.com/thing:5020524
rival-blackOP•2y ago
Ok I'll try to calibrate with this method. But can this resolve the not perfect squared box? The box can be more accurate in decimals, but why the box lid fit the box only when upside down?
As you can see from my 5th picture the gap is almost 3mm
that's from before skew calibration correct?
rival-blackOP•2y ago
before and after
are you setting the skew in your slicer?
rival-blackOP•2y ago
no I only save config after create my profile, I see that the configs was put in the custom settings in printer.cfg
rival-blackOP•2y ago
you need to add
SKEW_PROFILE LOAD=vminion to the start g-code and SKEW_PROFILE REMOVE=vminion to end g-code (or start/end print macros) whichever option you like better :_)rival-blackOP•2y ago
ah ok thanks, I'm trying 👍
the skew you calculated is ~0.65 degrees, in the long term i'd look into adjusting your build, i don't know much about the minion, but it shouldn't be too hard to square it up.
according to prusa docs:
rival-blackOP•2y ago
interesting!
Problem solved...skew correction solved my print dimension and now box lid and box body fit together perfectly, thanks @pravvv @blacksmithforlife
