Mil - Carolean Field Forge Wagon

This article was published Sep 11, 2019.

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Started with the forge wagon last week, but (again) struggled with the printer.. This time it refused to feed more than a few cm of filament, then it freeze up! After several trials, changing nozzle, print bed cover, cleaning etc, I found out that "left-overs" from the filament had built up inunder and partly inside the print head. It did act as an heat sink and made the nozzle and print head cool off much faster then supposed to.

Time I summarize a few things always important for a good print, guess how I know ....

  1. first the drawing, sometimes the printer does not even recognize it.. The slicing might went good, but still nothing in the display - Go back and check the drawing, is it properly grounded? Even if it is, sometimes just rebuild the STL file and slice again, make it work.
  2. second, to thin walls or other construction faults in the drawing ? Go back to the CAD again
  3. third, the print starts to drift and lean in any (or all..) directions ? Make sure infill is at 100% and that not a critical wall is exactly a multiple of 0.4mm (the nozzle opening). If so add just a +/- 0.1mm to avoid walls (or layers) just touching each other. Some increase print temperature, but I vote against that, gives other problems instead. Sometimes an adjustment of the X, Y belts might be needed, but I never had to do that.
  4. awful looking layers ? make sure the filament is moving extremely easy and light. Could also be that the filament is tangled inside the feed tube, up to the print head. Untangle and again make sure it moves nice and smooth.
  5. model does not stick to the printbed ? Change cover, or if you have those bendable ones, clean it. Sometimes trying a new type of filament might need adjusting print temperature. Not all have the same temp. Sometimes not even the recommended temp works for your printer - try different ones.
  6. Stringing on the finished print ? For me, different temps have solved it, or just let be and clean it off.
  7. As today, the filament does not get hot enough to stick to the printbed ? Make sure ALL around the nozzle and print head is clean.

I will add new things to this list as I found them.

Below shows the frame and cargo, next is wheels and chassis.

 

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