Hi Please can you help.

3D Printing
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1

Hi
Please can you help. I printed a 25mm Test cube and had no problem with the layers. I now tried printing a Vase and there are small Gaps between the layers as you can see in the Pic. What setting causes this ?

My settings
Temp = 210, PLA, Bed temp 60, Speed = 90mm, Slic3r vase settings . Mendel90

f495c83754ec50a959d8aceb93da1cb2.jpeg
f495c83754ec50a959d8aceb93da1cb2.jpeg1153×2048 242 KB

2

Based on that photo and the fact that the vase does not seem centered in the loop around it, I’d say that either your x or y axia is slipping. Check the tension of your belts.

3

It appears to be an acceleration/Jerk problem, extrusion only appears to be in adequate when the printer is changing direction. Have you calibrated your acceleration and jerk? Additionally you may need to slow down. This is typically more forgiving at lower speeds. Thomas Sanladerer has a good guide on this here: https://www.youtube.com/watch?v=7HsIZuj9vOs

4

also it might be layer height - try to make it twice as small, or even three times smaller.

5

Completely unhelpful and slightly off topic but: I read “Please can you help. I printed a 25mm test cube”, text preview cut off here, then I saw the picture and went like “huh?!”

6

Thanks guys , I will look at your suggestions. I don’t know how to calibration acceleration & jerk but i look at the video.

7

I would try a lower layer height first. This looks like the layer height/width ratio is too large for good single-wall overhangs.

8

Layer height?

9

Tighten belts and slow down to 60

10

Thanks to everyone. I try your recommendations tonight. @Ralph_Schaffner Thanks for your help, I moved the Vase to look at it, that’s why it looks off center.

11

@Ryan_Carlyle May I ask how do you work out Layer Height / width Ratio. What is a good ratio that most use. Thanks

12

@Vaughan_Lundin there are different rules of thumb. I usually say width=nozzle and height less than 75% of nozzle size. Some people say width=height+nozzle. For overhangs, you want at least half of each strand on top of the previous layer, so for 45 degree overhangs you should do height = half of width or less. Smaller layer heights perform better for overhangs.

13

Thanks for all the help , much appreciate it.