Definitely try dipping an old part in acetone for a second or 2,then wiping it across the area you’re printing. Try and use the same colour old part, as the colour that you’re printing. I also found the blue build take sheets you get from flashforge did this to me after a reasonable amount of use. Try an area you haven’t used the build plate much, or alternatively, replace the blue sheet with a fresh one. Abs sticks very well to a fresh sheet of that stuff.
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If the infill is 100% you need to reduce the cooling, therfore I would heat the build plate up even higher. At this point its trial and error until you get the right temp. Geometry and orientation are a big part of how your part shrinks. Using default settings almost never work. Good luck.
Try printing with a raft. That helped reduce warping for me on certain sizes and shapes
Hi Mr Egan, 234 for extruder and 110 for the first few layers on the heat bed and then drop to 90. For ABS - on a box shaped item, no fan at all. I get flat prints but I had to go to extremes to get it with my Dreamer. It looks like you have a few other issues as well. You can join me on 3D Printing Club | Facebook 23 , plenty of help there with around 23K memebers. Have a good one. Bob.
Looks like over extrusion to me.
Have you calibrated your extrusion multiplier? Not on my computer so can’t post the model I use. But it is a 2 wall cube and then measure the thickness.
this is the method I use
I’ve had awesome results with:
bed 90°, kapton tape with acetone slurry and no cooling. ABS is a little bit tricky. Different colors and different spools are having different setups. Usually I’m using 235°-240° as printing temp. I hope this helps