For last two weeks I have been struggling with flow rate adjustments. I'm using an UM2, colorFabb XT 1.75mm and Slic3r. Before printing a test cube I made flow rate adjustments using the "Perimeter test" (printed a hallow cube with 1 layer thin perimeter line). I then compared the desired value of the perimeter's width with the value from the g-code and adjusted the flow rate. I repeated this procedure until I got exactly the thickness I needed. After that, I printed a 15x15x15 mm cube and observed under extrusion on top layer. Also, the dimensions of the cube in the x-y plane were smaller than expected (0.4mm shorter than they should be). I have done this a few times now, and still get the same result. :/ Furthermore, I was unable to adjust width by dividing the desired value of the width of the perimeter by a real value, I got slightly smaller extrusion multiplier (One I got by division is 0.9 , but 9.5 relates to desired width). Do you have some suggestion guys?
I'll try to explain the calibration method I have used.
It looks like you overtune it. I think it's because top layer of hollow object doesn't have any support (which is obvious) but because of that the filament is not oblate that's why it looks like underextruded.
If you really need hollow object then set number of top layers to 3..5 then check if it helps. I know it's not really what you expect but IMO this could help here. (I usually set 2 bottom layers and 3 top and it's quite enought.) You can also experiment with speed of top leyer. I would say the faster the better in this issue as the the first top layer should be as flat as possible then next top layer will have better support. And of course cooling should be set to max (as for the bridges).
A is wall (perimeter) B is (ceiling) top layer.
Empty outlines are what you expect but filled shapes are what you really get. Differences are of course slightly smaller but it's to clearly explain the issue
Please also check Printer Settings > Advanced > Top solid infill.
I've had that issue on my 3D printing shop.
That kind of problem usually happens when the extruder driving gear gets worn out. This makes the extruder loose it's grip on the filament and diminishes the flow of the extrusion, resulting on the prints you show on your photo.
Depending on the time you have with your printer and the use you give it the gear will get worn out between 8 to 12 months and you will have to change it to avoid the flow issues.
I recommend you to open the extruder and check if the driving gear is worn so that you can order a new one.
problems. But last night they had serious problems: I haven't seen a problem like that before. Extrusion rate seems basically perfect - why does it look like it just stopped extruding around the perimeters? I'm using PLA filament and Simplify3D 3.1.0 slicing. Settings: 0.35 mm nozzle, 0.40 mm extrusion width, 1.05 extrusion multiplier 0.15 mm layer height, 3 top, 3 bottom layers, 2 perimeter shells (maybe should try 3?) 30% infill, 60% outline overlap, 110% infill extrusion width Temp is 220°C (thermocouple wedged between nozzle and heater block reports about 206°C when thermistor says
on the printer) - no noticeable change, especially when going slower change the first layer extrusion width from 200% to 250% or 300% - that made the strands "flatter", but also made Slic3r space out the strands... this or am I just patching over an entirely different problem that I just failed to diagnose properly? If it is the right way, how can I tell Slic3r to either change the flow rate / extrusion multiplier...First off - I'm rather new to this and I might be on the wrong track altogether... I'm printing PLA using a simple DIY XYZ printer with a direct-driven extruder, 0.3 mm nozzle, 0.2 mm layer heights
I have printed the XY resonance, Z resonance, bridging performance and the negative space tolerance test, from Makezine (can be found here), and I have encountered the following errors in the prints..., I have printed it a few times and every time I'm getting the same problem at the same side. Click Here Click Here Bridging performance test: Has severe infill drop, the test recommended printing... head (0.35 mm). These are the settings that I used while printing these objects: Layer thickness: 0.1 mm infill: 20% Printing temperature: 230°C Printbed: 85°C Bottom and top layer thickness: 0.1 mm
I did calibrate the extruder to extrude exactly 50/100 mm and it is fine. I have replaced the old (prehistorical) extruder that was giving me the problem with a new one. The issue does not go away. It is severely under extruded. The nozzle is a 0.4 mm, if I extrude manually the extrusion is nice and clean but when printing its a mess. I have the following setting in Slic3: Layer height: 0,16 First layer height: 0,16 Filament diameter: 2,94 Extruder temperature: 184°C Extrusion multiplier: 1 Fill density: 15% In Marlin I have the following setting for the extruder: Steps per unit: 1450
that takes place on the x and y axes. Basically what happens is that in a test cube of 10x10x10mm it is translated on x and y axes at some points in the corners. Below an explanatory image: The dimensions are good (less than half of a mm) but got this bad visible distortion (about 1 mm or less). There is a tool or a command in Repetier-host/firmware that corrects this issues? ...I built a delta 3d printer (like a mini Kossel) and now I'm trying to calibrate it. I made all the horizontal and vertical bars myself with wood and I bought angle joints (between bars) made with 3D
of the layers so I think it must have something to do with slicing settings, but I'm at a loss for what I need to change to fix it. See below for images of the issue. On the orange piece near the right hand side you can see light shining through the gap. The black cube has it at the top, though it's not deep enough to let light through like with the orange one. There is also an image of the layer preview which shows the same gap. I have a Rostock Max v2 (stock hot end). I am using Matter control using mostly stock settings, I've tweaked around layer height, speed, and temp but I don't think those
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I've just tried to make some small labels with embossed lettering. Base is 1.5 mm, with letters and a perimeter protruding by another 1 mm. After printing, I realised that Cura is not giving me a top layer, all I get is an inner and outer wall for the perimeter and the lettering: The base is OK, with 4 layers, but there is no infill at the top. Presumably there is a setting that I've missed (I... here are 1 mm (i.e. 2.5x the nozzle). The features are solid so far as I know, not drawn as a hollow. I found a relevant bug for Cura: https://github.com/Ultimaker/Cura/issues/1303 (and I also
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