3D printing forums

Cura was confused by your model. Cura regarded the "extra" solid part in the center as part of the model, not part of the build plate adhesion geometry.

What printer do you use? If your printer does not support printing over USB, it does not support OctoPrint. Though most printers do still support that, the Ultimaker 3 and newer for example do not. It could be that you inadvertently told Cura that you have an Ultimaker S5 printer, since it is the default option when you add the printer to Cura.   If this does not turn out to be the issue, I need to see your Cura.log. It can be found in the folder that opens when you go to Help -> Show configuration folder. Please upload the Cura.log file somewhere and post a link to it here.  

What I said was: you can, as pointed out in this thread. I have copy/pasted it below so you don't have to go look it up.         Cura checks if the start gcode contains commands to heat up the hotend and bed before the print is started. If the start gcode does not have command to do that, CuraEngine adds the three lines (M190, M104, M109) before your start gcode just to make sure that the hotend is not cold before starting the actual print.   If you don't want Cura to add these lines, make sure your start gcode contains lines which have {material_print_temperature} and {material_bed_temperature} or {material_print_temperature_layer_0} and {material_bed_temperature_layer_0} in them respectively. eg:   ;... code that should go before the heatup sequence here! M104 S{material_print_temperature_layer_0} ;Start heating extruder M140 S{material_bed_temperature_layer_0} ;Start heating bed M109 S{material_print_temperature_layer_0} ;Wait for extruder to reach temp before proceeding M190 S{material_bed_temperature_layer_0} ;Wait for bed to reach temp before proceeding   Be sure NOT to put in the actual temperatures; Cura will do that for you.  

I'm using Cura 4.6.2 at present and wonder if it is possible to modify the infill generation. Some models I make are basically a 1.8mm plate with something on top. Normally Cura generates an infill that is reflective of what ever is on top. Even with 100% infill the infill does look funny:   Ideally what I would like to achieve is an infill pattern, that does not take 'note' of what is on top like this (even if I set the infill to something less than 100%!):   I know why Cura is doing what it is doing, but in this case, i would like to use a 'modifier' that tells it to not look ahead and simply fill each level on it's own. I have a solution of sorts, but it involves a convoluted process of making two models, slicing them separately and then joining the gcode with the help of a program I wrote. I hope there is a way to eliminate the extra steps?          

I tell you what.  Bring a model into Cura (like a calibration cube or benchy or something small).  Set Cura up the way you like and then use the "File | Save Project" command and then post the resulting 3mf file here.  A Project file contains your printer, all the Cura settings, and the model so it is a complete package.  I'll take a look at half-time in the 49ers v Packers game.   Cura allows me to run my Ender at up to 500mm/sec while printing.  The machine won't take it mnd you, but I conceivably could print that fast.  Your CR10 is bigger and the bed is heavier but print time should not be any different than with any other slicer. I have 19 slicers installed (I should get a life!) and there is no speed problem with any of them.