DaHai8

Couple of things I see: While this doesn't apply to your top layer problems, but I think your Initial Layer Thickness and Line Width are too high. I almost always print with .3 and 100%, respectively for a .4mm nozzle. But if you are not having any issues there, then don't change it. For the top layers, your top/bottom speeds may be too slow. Depending on your printers extruder type and motor, this may be too slow and it is having issues extruding the filament. This could cause intermittent clogs and produce the random thinness seen in your top layers. Your extruder motor may not be able to finely push the filament at that slow of a rate. Try increasing the top/bottom speeds to 20, 25, 30 and see if it improves.

Old Cura as in 15.x? And "Used to Work fine" as in 15.x doesn't work anymore or new Cura (2.x) doesn't work? Somethings gotta be different: Flow, Bed Temperature, Hot-End Temperature, Initial Layer Height, Print Speed, Jerk, Acceleration, etc. What Printer are you using? Filament Type: PLA, ABS, etc? Can you post screenshots of your profile settings?

1. Cura 2.x does not add the name of the printer to the filename (aka "name of the file"). It prefixes a 2-3 letter abbreviation of the Printer Name so that those of us who own more than one 3D Printer can quickly determine which Printer that .gcode was generated for (just in case we save them and reprint them later - I do this a lot). Furthermore most printers don't even display the filename or the printer name when printing. So this is irrelevant. 2. Take a look at the end of the .gcode file. You're a IT Person, you should be able to view it. ;SETTING_3 {"global_quality": "[general]\\nversion = 2\\nname = Normal Quality\\;SETTING_3 ndefinition = fdmprinter\\n\\n[metadata]\\nweight = -2\\ntype = quali;SETTING_3 ty\\nquality_type = normal\\n\\n[values]\\n\\n"} You will notice that it contains the Quality Name, Printer Name and any variations of on those settings. Now, take a look at Manage Profile / Import. In there you will find in the File Type drop-down that '.gcode' files can be imported. This only only restores your object to it location on the print bed, but also all the Meta data associated with it: Printer Name, Profile Name, Deviations of Settings, etc. Also, note that Cura 2.3 is BETA. As an IT Manager for 35 years to an IT Person as yourself, I'm sure you understand what the term 'Beta' means. So not everything is going to be working 100% with this release. As a result, this particular import function appears to have an issue in importing .gcode files. Which according to the priorities put forth by the Managers and Applications Owners of said software, may or may not get corrected in the next release. Sometimes this does not always correlate with End User's wishes. Wow. I can't even ... I'm at a loss for words... As for your last statement: I am a user on this planet, and as I stated in #1 above, this can be quite useful. If you have ideas and opinions, as an IT Manager of 35 years, I have found using a Carrot instead of a Stick gets more accomplished...

Log file are in: C:\Users\YourUsername\AppData\Local\cura

Can you verify this in the gcode? Use a text editor like Notepad and search for M106 commands in the .gcode file. If there are none, thens its something your printer is doing. Otherwise, what version of Cura exactly are you using? Otherwise, when I turn off Cooling in Cura 2.3, I don't have any M106 commands in the generated gcode.

Have you calibrated your extruder to ensure you get 100mm when you ask for 100mm? You could try a quick print at 110% Flow to see if that closes the gaps. How about the hot-end temperature? Does it fluctuate a lot when printing? Have you done a PID tune on it? What filament are you using? Do you have other types/colors to try?

Try re-adding that .cura folder

This should cover it: How can I reset all settings in Cura 2.1?

The Autodesk APP Store has an STL exporter, though I've never used it... Cura also supports 3MF format, if that helps.

Jinks!

If you want to reinstall Cura and start over from scratch with a clear set of profiles, try deleting the following folder (or at least renaming/moving it): C:\Users\YourUsername\AppData\Local\cura That's were all the customized stuff is stored.

It is to prime the nozzle, but unlike a skirt or brim it does not add to the x y dimensions of your print. So if you're printing an object that just barely fits on your bed, you can still prime the nozzle - in most cases.

Which version of Cura are you using? I'm remembering an issue with an older version with build area larger than 200mm sq.

Spaish, In Cura, look under Build Plate Adhesion. Skirt, Brim and Raft. All add extra width and depth to an object. If your object is very close to the max size of your build plate, this can cause it to exceed it. Try setting Skirt Line Count = 0 and Skirt Distance = 0 That will give you maximum build plate area at the cost of not priming your print head before printing.

I'm stumped then. Sorry.

What 3D Printer are you using? Is it still the PrintrBot? When you 'Home' the Printer, where does the Print Head land? On the Build Plate or off? I Cura, Home is set to 0,0,0 so If the Print Head is off the Bed (like many Prusa I3 Printers), it will offset your prints. This can be fixed in the gCode Startup.

What's under the Down Arrow next to the "Save to File" button?

Here's the Disallow Areas for a 200x200 Delta print bed. Brief Tutorial follows... , "machine_disallowed_areas": { "default_value": [ [[-100.00, 0.00], [ -98.76, -15.64], [ -98.76,-100.00], [-100.00,-100.00]], [[ -98.76, -15.64], [ -95.10, -30.90], [ -95.10,-100.00], [ -98.76,-100.00]], [[ -95.10, -30.90], [ -89.10, -45.39], [ -89.10,-100.00], [ -95.10,-100.00]], [[ -89.10, -45.39], [ -80.90, -58.77], [ -80.90,-100.00], [ -89.10,-100.00]], [[ -80.90, -58.77], [ -70.71, -70.71], [ -70.71,-100.00], [ -80.90,-100.00]], [[ -70.71, -70.71], [ -58.77, -80.90], [ -58.77,-100.00], [ -70.71,-100.00]], [[ -58.77, -80.90], [ -45.39, -89.10], [ -45.39,-100.00], [ -58.77,-100.00]], [[ -45.39, -89.10], [ -30.90, -95.10], [ -30.90,-100.00], [ -45.39,-100.00]], [[ -30.90, -95.10], [ -15.64, -98.76], [ -15.64,-100.00], [ -30.90,-100.00]], [[ -15.64, -98.76], [ 0.00,-100.00], [ -15.64,-100.00]], [[ 100.00, 0.00], [ 98.76, 15.64], [ 98.76, 100.00], [ 100.00, 100.00]], [[ 98.76, 15.64], [ 95.10, 30.90], [ 95.10, 100.00], [ 98.76, 100.00]], [[ 95.10, 30.90], [ 89.10, 45.39], [ 89.10, 100.00], [ 95.10, 100.00]], [[ 89.10, 45.39], [ 80.90, 58.77], [ 80.90, 100.00], [ 89.10, 100.00]], [[ 80.90, 58.77], [ 70.71, 70.71], [ 70.71, 100.00], [ 80.90, 100.00]], [[ 70.71, 70.71], [ 58.77, 80.90], [ 58.77, 100.00], [ 70.71, 100.00]], [[ 58.77, 80.90], [ 45.39, 89.10], [ 45.39, 100.00], [ 58.77, 100.00]], [[ 45.39, 89.10], [ 30.90, 95.10], [ 30.90, 100.00], [ 45.39, 100.00]], [[ 30.90, 95.10], [ 15.64, 98.76], [ 15.64, 100.00], [ 30.90, 100.00]], [[ 15.64, 98.76], [ 0.00, 100.00], [ 15.64, 100.00]], [[ 100.00, 0.00], [ 98.76, -15.64], [ 98.76,-100.00], [ 100.00,-100.00]], [[ 98.76, -15.64], [ 95.10, -30.90], [ 95.10,-100.00], [ 98.76,-100.00]], [[ 95.10, -30.90], [ 89.10, -45.39], [ 89.10,-100.00], [ 95.10,-100.00]], [[ 89.10, -45.39], [ 80.90, -58.77], [ 80.90,-100.00], [ 89.10,-100.00]], [[ 80.90, -58.77], [ 70.71, -70.71], [ 70.71,-100.00], [ 80.90,-100.00]], [[ 70.71, -70.71], [ 58.77, -80.90], [ 58.77,-100.00], [ 70.71,-100.00]], [[ 58.77, -80.90], [ 45.39, -89.10], [ 45.39,-100.00], [ 58.77,-100.00]], [[ 45.39, -89.10], [ 30.90, -95.10], [ 30.90,-100.00], [ 45.39,-100.00]], [[ 30.90, -95.10], [ 15.64, -98.76], [ 15.64,-100.00], [ 30.90,-100.00]], [[ 15.64, -98.76], [ 0.00,-100.00], [ 15.64,-100.00]], [[-100.00, 0.00], [ -98.76, 15.64], [ -98.76, 100.00], [-100.00, 100.00]], [[ -98.76, 15.64], [ -95.10, 30.90], [ -95.10, 100.00], [ -98.76, 100.00]], [[ -95.10, 30.90], [ -89.10, 45.39], [ -89.10, 100.00], [ -95.10, 100.00]], [[ -89.10, 45.39], [ -80.90, 58.77], [ -80.90, 100.00], [ -89.10, 100.00]], [[ -80.90, 58.77], [ -70.71, 70.71], [ -70.71, 100.00], [ -80.90, 100.00]], [[ -70.71, 70.71], [ -58.77, 80.90], [ -58.77, 100.00], [ -70.71, 100.00]], [[ -58.77, 80.90], [ -45.39, 89.10], [ -45.39, 100.00], [ -58.77, 100.00]], [[ -45.39, 89.10], [ -30.90, 95.10], [ -30.90, 100.00], [ -45.39, 100.00]], [[ -30.90, 95.10], [ -15.64, 98.76], [ -15.64, 100.00], [ -30.90, 100.00]], [[ -15.64, 98.76], [ 0.00, 100.00], [ -15.64, 100.00]] ] } How I Did It - by Victor Von Frankenstein I use Sketchup with the Utilities / Query Tool Extension. Disallow areas in Cura have their Origin at the center of the build plate (regardless of location of the Print Origin) I draw a Circle with the desired number of sides and diameter in Sketchup at the Origin and then use the Utilities / Query Tool Extension to map out each point on the Circle. It generates a specific pattern when building the polygons, which makes it easier and less error prone. In the image below:... The green highlighted numbers are always Diameter/2 Red arrows show that the Second Point is always replicated to the First Point on the Next Polygon The Blue arrows show that the First Value of the Second Point is always replicated to the First Value of the Third Point and First Value of the Last Point of the Next Polygon The Gold and Blue highlighted areas show that halfway through the quarter circle, the Coordinate Points swap (X for Y) I just build the first Quarter Circle with all Negative Values and then replicate it three times. I then just alternate the Signs of the X and Y coordinates (-/-, +/+. -/-. +/-) to complete the other three Quarter Circles I'm sure there are dozens of different ways of doing this. But this is what I came up with and I find the symmetry makes it easier to build with less errors and typos and easier to detect those errors. Enjoy!

Ok, your using Cura 2.1.x. I'm on Cura 2.3 so the json file formats are not compatible. You may consider upgrading to 2.3, its a lot faster with more functionality and less bugs

Here's the Disallow Areas for a 260x260 Delta Print bed (40 polygons). Enjoy! , "machine_disallowed_areas": { "default_value": [ [[-130.00, 0.00], [-128.40, -20.33], [-128.40,-130.00], [-130.00,-130.00]], [[-128.40, -20.33], [-123.63, -40.17], [-123.63,-130.00], [-128.40,-130.00]], [[-123.63, -40.17], [-115.83, -59.02], [-115.83,-130.00], [-123.63,-130.00]], [[-115.83, -59.02], [-105.17, -76.41], [-105.17,-130.00], [-115.83,-130.00]], [[-105.17, -76.41], [ -91.92, -91.92], [ -91.92,-130.00], [-105.17,-130.00]], [[ -91.92, -91.92], [ -76.41,-105.17], [ -76.41,-130.00], [ -91.92,-130.00]], [[ -76.41,-105.17], [ -59.02,-115.83], [ -59.02,-130.00], [ -76.41,-130.00]], [[ -59.02,-115.83], [ -40.17,-123.63], [ -40.17,-130.00], [ -59.02,-130.00]], [[ -40.17,-123.63], [ -20.33,-128.40], [ -20.33,-130.00], [ -40.17,-130.00]], [[ -20.33,-128.40], [ 0.00,-130.00], [ -20.33,-130.00]], [[ 130.00, 0.00], [ 128.40, 20.33], [ 128.40, 130.00], [ 130.00, 130.00]], [[ 128.40, 20.33], [ 123.63, 40.17], [ 123.63, 130.00], [ 128.40, 130.00]], [[ 123.63, 40.17], [ 115.83, 59.02], [ 115.83, 130.00], [ 123.63, 130.00]], [[ 115.83, 59.02], [ 105.17, 76.41], [ 105.17, 130.00], [ 115.83, 130.00]], [[ 105.17, 76.41], [ 91.92, 91.92], [ 91.92, 130.00], [ 105.17, 130.00]], [[ 91.92, 91.92], [ 76.41, 105.17], [ 76.41, 130.00], [ 91.92, 130.00]], [[ 76.41, 105.17], [ 59.02, 115.83], [ 59.02, 130.00], [ 76.41, 130.00]], [[ 59.02, 115.83], [ 40.17, 123.63], [ 40.17, 130.00], [ 59.02, 130.00]], [[ 40.17, 123.63], [ 20.33, 128.40], [ 20.33, 130.00], [ 40.17, 130.00]], [[ 20.33, 128.40], [ 0.00, 130.00], [ 20.33, 130.00]], [[-130.00, 0.00], [-128.40, 20.33], [-128.40, 130.00], [-130.00, 130.00]], [[-128.40, 20.33], [-123.63, 40.17], [-123.63, 130.00], [-128.40, 130.00]], [[-123.63, 40.17], [-115.83, 59.02], [-115.83, 130.00], [-123.63, 130.00]], [[-115.83, 59.02], [-105.17, 76.41], [-105.17, 130.00], [-115.83, 130.00]], [[-105.17, 76.41], [ -91.92, 91.92], [ -91.92, 130.00], [-105.17, 130.00]], [[ -91.92, 91.92], [ -76.41, 105.17], [ -76.41, 130.00], [ -91.92, 130.00]], [[ -76.41, 105.17], [ -59.02, 115.83], [ -59.02, 130.00], [ -76.41, 130.00]], [[ -59.02, 115.83], [ -40.17, 123.63], [ -40.17, 130.00], [ -59.02, 130.00]], [[ -40.17, 123.63], [ -20.33, 128.40], [ -20.33, 130.00], [ -40.17, 130.00]], [[ -20.33, 128.40], [ 0.00, 130.00], [ -20.33, 130.00]], [[ 130.00, 0.00], [ 128.40, -20.33], [ 128.40,-130.00], [ 130.00,-130.00]], [[ 128.40, -20.33], [ 123.63, -40.17], [ 123.63,-130.00], [ 128.40,-130.00]], [[ 123.63, -40.17], [ 115.83, -59.02], [ 115.83,-130.00], [ 123.63,-130.00]], [[ 115.83, -59.02], [ 105.17, -76.41], [ 105.17,-130.00], [ 115.83,-130.00]], [[ 105.17, -76.41], [ 91.92, -91.92], [ 91.92,-130.00], [ 105.17,-130.00]], [[ 91.92, -91.92], [ 76.41,-105.17], [ 76.41,-130.00], [ 91.92,-130.00]], [[ 76.41,-105.17], [ 59.02,-115.83], [ 59.02,-130.00], [ 76.41,-130.00]], [[ 59.02,-115.83], [ 40.17,-123.63], [ 40.17,-130.00], [ 59.02,-130.00]], [[ 40.17,-123.63], [ 20.33,-128.40], [ 20.33,-130.00], [ 40.17,-130.00]], [[ 20.33,-128.40], [ 0.00,-130.00], [ 20.33,-130.00]] ] }

I can make one. I want to do it with fewer polygons - 60 was a pain! I don't think you'll notice much of a difference.

I can't choose your printer after add this json file to Cura folder. I also try to replace code in defined profiles but nothing changes. Am I wrong at something ? Cura probably doesn't like this line in my profile: "platform": "Aurora_A3.stl" It's a custom platform stl file to display my printer bed. Try removing that line. Post your .json file with the disallow areas and I'll take a look. The ,json file format is really really picky.

Same on Windows. Just tested it. Looks like it defined as Integer Only.

This may be due to the default Jerk and Acceleration settings in Cura being less than what is set on your printer. In Cura 2.3, you can set the Jerk and Acceleration in the Speed settings (you may have to make them Visible). I was having the opposite problem, Cura time estimates were much lower than my actual print times until I changed the Jerk and Acceleration setting in Cura to match my printer. Now they are +/- 5%

BUG - Layers not showing in Grouped Objects. Grouped Objects: No Layers Visible Ungrouped Objects: Layers Visible