Another variation on the detached print is a blob that forms near the nozzle. Like the hairball failure, this one is mostly harmless, as long as it doesn’t merge into the hotend.
Usually when I run into this issue, I may one or more of the following:
- Add a new or stronger coating on the printer bed
- Make sure the first layer is at the correct height (the extruded filament should be squished, without any gaps between the lines)
- Print the first layer slower
- Use z-hop on travel moves
- Increase the bed temperature
- Print with a brim
- Increase the surface contact of the first layer by trimming part of the model (e.g. printing a sphere)
- Use a plastic that will warp less (PLA, PETG)