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Thread: Problem with bottom layer.
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09-03-2021, 12:34 PM #1
- Join Date
- Sep 2021
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- 9
Problem with bottom layer.
When I print certain prints I have this issue with the bottom layer printing poorly. Everything else is good except the bottom and I can't figure out what I'm doing wrong. Thoughts?
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09-04-2021, 08:20 AM #2
It would help to know your slicers settings, and what 3D Printer you are using.
Post Screen captures of the Display after slicing, Include the model showing model,
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09-05-2021, 01:21 PM #3
yeah that's definitely a problem :-)
I can see a number of issues.
1) z-gap is too large, you need to calibrate with thinner paper or adjust your z-axis offset to move the printer head nearer the printbed..
2) overextrusion. in a big way :-) Check the percentage extrusion width of your first layer. It should be 100%
3) first layer print speed - it's probably too high. first layers should be printed at around 10-20mms for best adhesion.
4) check to see if you are printing a raft. If so, switch it off. for pla you should never need one.
But yeah, give us some infomation to work with :-)
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09-05-2021, 01:45 PM #4
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- Sep 2021
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Do I adjust the Z gap with the calibration?
So it turns out the main problem was i wasn't using supports but I tried with supports and it still could use some improvement. I'm using an Ender 3. Where do I check the extrusion width? My initial layer speed is 20mms.
No raft being used.
My support settings are Tree, touching build plate, support angle 45.0, pattern - zig zag, support density 0,
Here's a similar file that I printed recently, better but still could use some improvement.small sized 3d print pic.jpg
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09-05-2021, 01:56 PM #5
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- Sep 2021
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- 9
Initial layer height - .2, top/bottom thickness -.8, bottom layers -4, infill density - 20%, print temp 200, build plate temp 50. print speed 50, retraction distance 5, fan speed 100.
Holes and pockmarks in print walls
06-04-2024, 09:14 AM in General 3D Printing Discussion