Slicing error

[AndWik]

Version

Prusa Slicer 2.2.0

Operating system type + version

Windows 10 Pro 64-bit

3D printer brand / version + firmware version (if known)

MK3S but it doesn't matter

Behavior

• Describe the problem
• Steps needed to reproduce the problem
  • If this is a command-line slicing issue, include the options used
• Expected Results
• Actual Results
  • Screenshots from PrusaSlicer preview are preferred

Before slicing. As it should look:

After slicing:

I haven't seen this issue before. Using PrusaSlicer many times/day

Slicing in Simplify3D works perfect.

The code below is OpenScad

Project File (.3MF) where problem occurs

$fn=100;

module WallPart () {
MK = 2;
minkowski () {
translate ([0,0,80/2]) cube ([16.5-MK,3.5-MK,80-MK], center=true);
sphere (d=MK, $fn=50);
}

rotate ([90,0,0])
	minkowski () {
		translate ([0,1.49,45/2]) cube ([16.5-MK,4-MK,45-MK], center=true);
		sphere (d=MK, $fn=50);
	}

translate ([0,-1.5,3])
	rotate ([0,90,0])
		minkowski () {
			rotate ([0,0,45])
				cube ([4-MK,5-MK,16-MK], center=true);
			sphere (d=MK, $fn=50);
		}

}

module OuterPart () {
MK = 2;
minkowski () {
translate ([0,0,130]) cube ([16.5-MK,3.5-MK,160-MK], center=true);
sphere (d=MK, $fn=50);
}
}
module Holder () {
MK = 2
;
minkowski () {
linear_extrude (height =20, center=true) {
difference () {
polygon (points=[[-2,0],[-2,45],[190,45],[190,35]]);

			scale ([0.6,0.425,1])
				polygon (points=[
				[ 500.00, 0],
				[ 500.00,  0085.88],
				[ 480.00,  0087.36],
				[ 460.00,  0088.64],
				[ 440.00,  0089.72],
				[ 420.00,  0090.57],
				[ 400.00,  0091.17],
				[ 380.00,  0091.52],
				[ 360.00,  0091.63],
				[ 340.00,  0091.51],
				[ 320.00,  0091.19],
				[ 300.00,  0090.68],
				[ 280.00,  0090.00],
				[ 260.00,  0089.08],
				[ 240.00,  0087.83],
				[ 220.00,  0086.14],
				[ 200.00,  0083.92],
				[ 180.00,  0081.07],
				[ 160.00,  0077.57],
				[ 140.00,  0073.44],
				[ 120.00,  0068.62],
				[ 100.00,  0063.00],
				[  80.00,  0056.43],
				[  60.00,  0048.76],
				[  50.00,  0044.28],
				[  40.00,  0039.13],
				[  30.00,  0033.02],
				[  20.00,  0025.37],
				[  12.00,  0017.86],
				[   8.00,  0013.74],
				[   4.00,  0008.92],
				[   2.00,  0005.80],
				[   1.00,  0003.73],
				[   0.50,  0002.34],
				[0.00000,  0.00000]]);
		}
	}
	sphere (d=MK, $fn=50);
}

}

module ScrewHole () {
translate ([0,0,0])
rotate ([90,0,0])
cylinder (d=4.3, h=50);
translate ([0,-6,0])
rotate ([90,0,0])
cylinder (d=8, h=50);
translate ([0,0,0])
rotate ([-90,0,0])
cylinder (d=8.2, h=10 ,$fn=6);
}

difference () {
translate ([0,-42,3])
rotate ([0,-90,0])
Holder ();
WallPart ();
OuterPart ();
translate ([0,0,70]) ScrewHole ();
translate ([0,0,130]) ScrewHole ();

translate ([0,-15,0])
		cylinder (d=16, h=6);
translate ([0,-15,6])
		cylinder (d1=16, d2=0.1, h=5);

translate ([0,-2,170])
	cube ([4.5,3,70], center=true);

}

//Support
intersection () {
translate ([0,-30,3]) cube ([12,60,6], center=true);
union () {
translate ([-3.5,0,0.47])
rotate ([90,0,0])
scale ([1,3,1])
cylinder (d=2, h=42);
translate ([3.5,0,0.475])
rotate ([90,0,0])
scale ([1,3,1])
cylinder (d=2, h=42);
}
}

[lukasmatena]

Please, provide a 3MF. Thanks.

[AndWik]

Attached Thanks for your quick response Mr Anders Wikström Sweden From: lukasmatena <notifications@github.com> Sent: 28 March, 2020 09:57 To: prusa3d/PrusaSlicer <PrusaSlicer@noreply.github.com> Cc: AndWik <anwi@telia.com>; Author <author@noreply.github.com> Subject: Re: [prusa3d/PrusaSlicer] Slicing error (#3941) Please, provide a 3MF. Thanks. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#3941 (comment)> , or unsubscribe <https://github.com/notifications/unsubscribe-auth/ADC2NJS4JCQRS6O6ICURZZTRJW3VPANCNFSM4LVPQZWQ> . <https://github.com/notifications/beacon/ADC2NJVEIEHUKSHLHFI3LATRJW3VPA5CNFSM4LVPQZW2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEQK6UGY.gif>

[tonycstech]

Looks like model problem. Most people dont understand that slicers dont see models same way human eye does.
I'd like to see the STL file to evaluate and point out the issues i find.
Then developer can address those issues.

[FidelCapo]

I can't test the fix for this model because there is no stl file available. However, according to tests of other models, this issue should be corrected in next release.
Can you please attach STL file? Thank you.

[bubnikv]

no response, closing.