My printer is a RepRapPro Mendel.
I’m experiencing an issue on top surfaces and line-infill with my printer, and I’ve been having a lot of trouble diagnosing the problem. Here are some pictures of it happening when trying to print the top layer on a honeycomb pattern at 15% infill, which hopefully will not be too blurry.
I can’t quite figure out how to describe the issue, which means I’m having trouble searching for solutions. Basically, if I use line infill, the infill will start out looking great, but toward the top will just look like a giant mess (blobs, ooze, and eventually the lines just won’t get deposited at all). You can also see that if I use a patterned infill, the first top layer to get laid across it won’t adhere properly either. Ooze blobs will form at certain intersections related to the pattern. Depending on how many/large they are, the print head will then get stuck on them as it travels to do the next layer, forcing me to cancel the print.
This is cheap filament from eBay (I originally was using white PLA from Faberdashery which worked very well. This new filament required I lay down blue painters tape to get it to stick to my glass bed at all, after days of troubleshooting and tweaking). I wouldn’t be surprised to find out the cheap filament is the problem,
What kind of test prints / calibration might I be able to do to compensate for this, or at least provide more useful information when asking for help?