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BenTanis

Support for Fulcrum Minibot

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Posted · Support for Fulcrum Minibot

I won a Fulcrum Minibot 3d printer in a contest and it showed up in the Post this past week.  This is my first step into this world and I'm really enjoying it, thus far.  The printer includes 20-30 or so preset designs to print, on an included SDcard.  While that is fun, I would like the freedom to download .stl files and print other designs.  I've tried using Cura (current version) and my gcode files do not print well - base layers rarely adhere and when they do, the resulting print comes out looking skewed or slightly melted.  

Is there any hope for me or must I wait for a profile for the Fulcrum Minibot to be added to a future version of the Cura software?

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Posted · Support for Fulcrum Minibot

There are two kinds of profiles - one for the machine and one for slicing.

1. Cura needs to know your machine so it can generate Gcode files that the printer can understand.  You need to go into the machine settings in Cura (did you add your printer as a custom printer?) and make sure the build plate size (75x75x70?) and Gcode flavor (Marlin, RepRap, whatever) and the other options are set for your printer.

2. If you open one of the Gcode files that came with the printer (with any text editor like Windows Notepad), there are lines at the beginning that will give some information regarding some of the slicer settings and what software was used to slice the model.  You should learn about Gcode since it is what makes the printer print.  Something like "M104 S205" doesn't make a lot of sense to just look at (it sets the hot end temperature), but at the Marlin.org site the Gcodes and Mcodes are explained.  So deciphering the Gcode file a bit should give you enough information to come up with your own Cura software profile for slicing.  It looks like you'll be limited to PLA with a max hot end temp of 205.

Leveling the bed and getting a good first layer is covered in numerous videos.

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Posted · Support for Fulcrum Minibot

First off, thank you for the response and offering insight.

To give a bit more detail...  I originally had set up a Custom Printer Profile in Cura, with the correct dimensions for the Minibot's bed (75 x 70 x 70mm).  I made sure the material settings were for 1.75mm PLA.  

The included designs (a bunch of vases, a hedgehog, a fish cup, etc.) print quite well but when I tried to generate my own gCode files it seems the nozzle height is incorrect - it's up off the bed slightly - I level before each attempt at printing.  Print temp (200° C) is right but the results were not good.

It had occurred to me that if I have existing gCode files that work, I could possibly translate those into a makeshift printer profile.  I will study, as you suggested, and see if I can gain understanding.

I ran through the included 200g of filament in 2.5 days so I'm currently waiting on more to be delivered, which gives me a few days to troubleshoot.

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Posted · Support for Fulcrum Minibot

In a gcode file, just above or below the line that says ";layer:0" will be a line with a Z value in it.  The last Z value that you see before extrusions start is the height that the slicer software assigned to the first layer.  Compare that number from one of the files you sliced with Cura, to one of the stock gcode files that worked.

In Cura under Quality is "Initial Layer Height".  As it implies, it's the height of the first layer.  Set it the same as Layer Height.  Under Build Plate Adhesion is "Z offset" and set that to "0".

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