Increase the extruder temp.
add a bit of glue stick.
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When this happens to me in my studio, we have 3 of the 5th generations, a swap of the filament is usually the first attempt to problem solve, and it usually does the trick. Filament is temperamental, and has a shelf life. If exposed to a too dry or too humid environment, or variations in temp, we tend to see this affect it pretty consistently. If it’s not the filament, after switching 1 to 2 spools, we adjust the temp settings in makerbots desktop software, or our other slicing software.if the initial extrude temp is not hot enough this can be the issue. The final check would be if the extruder itself Is having heat issues, or perhaps is not making correct contact with the print bed. A simple recalibration/level here won’t hurt, but if it’s the extruder failing, you may want to swap that extruder with a new one, or different one, and see if it prints with this new one.
I think the build plate is too far from the nozzle.
Sometimes the levelling is not enough and you have to calibrate it a little more.
Here are the instructions how to do it:
It’s true that having a higher temperature for first layers will impact a lot adhesion. I do not know Makerbot softwares but, in Simplify 3D, you can select different settings for different heights of the print.
I always set higher temps for 5 first layers (around 220°C for colorFabb PLA/PHA) and then lower the temp for next layers (195°C for colorFabb PLA/PHA).
It will make the first layer to make a very good adhesion.
In Simplify 3D, you can also change settings for the very first layer (height, width, speed). This will also impact a lot the quality of your print.
https://www.simplify3d.com/support/tutorials/perfecting-the-first-layer/ 19
and this very good guide:
https://www.simplify3d.com/support/print-quality-troubleshooting/ 5
You have a very interesting problem, but I know one thing…
DO NOT TURN UP YOUR EXTRUDER TEMPERATURE!!
This will not help with your problem, and it may damage the extruder if you go over 245 Degrees (Celsius). Your problem is interesting because it has a few different problems, and it has a few different fixes. My first recommendation would be to check your homing. All 5th Generation Makerbot’s vary in homing heights, and this also varies in Smart Extruders. For this reason, I recommend running a new print every time you swap extruders. However, from the picture I can infer that this is probably something you should fix in MakerBot Desktop. Try squishing your first layer for print bed adhesion. (Adjust the Z-Offset). Another thing you could try is adding just a bit of glue to your plate. Don’t smear globs on, just a nice thin layer. This usually does the trick for most adhesion problems. Yet another thing you can try is changing filaments. I think somebody already mentioned that problems DO come with having old filament, including bed-adhesion. Try changing to some newer filament, this may help. My final suggestion would be checking your painters tape. Weird as it may sound, the type of painters tape you have may affect your adhesion! Some painters tapes don’t adhere very well. I have personally had the best luck with ACE Hardware’s tape.
I really hope this helps! As you can see, I know many possible solutions. It really varies on the problem, and I would just recommend trying each of my suggestions until one works! I really hope this helps!
Jackson
As indicated by others the spacing is too much. Need to watch closely when print starts and make small adjustment while print is starting. Takes a little practice, but even with what seems to be a perfectly level plate this is usually necessary. As for the tape, I and others have found that the best tape is actual Scotch brand masking tape and the trick is a wipe down with an alcohol soaked (not dripping) paper towel to slightly dampen and activate the surface. This works great! Use the alcohol trick with whatever tape you use.
I had this issue on my flash forge dreamer. It turns out there was a SLIGHT blockage (Contaminate) in the feeder tube inside the heater block. I was able to pull this apart and remove the contaminant and it worked beautifully.