Different printing results with different slicer settings

Hi, everyone. This passage is mainly written for those who uses 3D printer for the first time.
I want to share some printing results with different slicer settings. Hope this will help some of you.

Printer: Geeetech Acrylic Prusa i3
Filament: PLA 1.75mm (also fits for 1.75mm ABS)
Nozzle diameter: 0.3mm

1. Infill density
15% vs 30%
http://3dprintboard.com/attachment.p...tid=5261&stc=1

As you can see in the picture, there are still many holes unfilled with 15% infill density. But the model is full filled with 30% infill density.

2. Skirt loops
0 vs 3
http://3dprintboard.com/attachment.p...tid=5262&stc=1

Obvious difference as you can see in the pictures above. Personally, I suggust you'd best print at least 3 loops of skirt, because the filament may not come out from the nozzle immediately. The printer will print the skirt first.

3. Brim width
0 vs 1
http://3dprintboard.com/attachment.p...tid=5263&stc=1
If the brim width is 0, printer will print 100% as same as the stl file. if the brim width is 1, printer will printer another brim, as you can see in the right side of picture.

4. Extrusion of first layer
100% vs 200% vs 400%
http://3dprintboard.com/attachment.p...tid=5264&stc=1

5. Vertical shells:perimeters(minimum)
2 vs 4
http://3dprintboard.com/attachment.p...tid=5265&stc=1
Look at the edge of these 2 models. If perimeter is 2, there are 2 loops of brim on each layer, and the model has a better look.

If you think there's something worth sharing, I will be glad if you leave your advice.

Never use skirt, and I can get a clean top easily with 10% infill.
Maybe you need to lower your print temps if your bridging is sagging that much.

I always use four solid shells on all surfaces, top/bottom rectilinear infill at 45 degrees (or sometimes concentric, for desired effect), and print with 35% hexagonal infill. Great results.

Quote:

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Originally Posted by curious aardvark

Never use skirt, and I can get a clean top easily with 10% infill.
Maybe you need to lower your print temps if your bridging is sagging that much.

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After all, my printer is only $299, so the precision maybe lower than yours. But I got perfect print when I print a bigger object with 15% infill.
In this passage, I want to let everyone see a more obvious difference, so I double the infill.
I insist on suggesting use skirt in case of accident, though my printer performs well without skirt.

Quote:

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Originally Posted by Davo

I always use four solid shells on all surfaces, top/bottom rectilinear infill at 45 degrees (or sometimes concentric, for desired effect), and print with 35% hexagonal infill. Great results.

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OK ,I will try it. Thanks.