Curver corners
Hello
I printed this at 300%. At this size, it is a big object that almost occupies all the XY space.
Both the bottom of the box and the cap of the box have curved corners that are not curved in the original design. The printer starts with a first layer that looks fine(sticks to the print bed) but somewhere in the printing process the corners lift up.
I clean my print bed before every print. I guess the upper layers are cooling down, contract and exert some pressure over the lower layers.
What can cause this and how can I prevent it?
Thank you.
Best Answer by --:
Large prints require exceptionally clean beds. If PEI, only soap and water wash in the sink will work (leave the alcohol at home in the bottle).
Even the PC sheet needs a preparatory soap and water wash (and subsequent 30 minute soak on the printer at 80c to dry it out).
ps: Once the sheet is clean (handled only by the edges, cleaned and dried using fresh paper towels, etc.) - then adding 10c to the bed temp can help keep PLA sticking. Reducing the print fan speed can hep, but if you have bridges you need to manage the bridge and non bridge speeds in the slice. Next step is enclosing the printer so the part stays warm and doesn't warp.
RE: Curver corners
Large prints require exceptionally clean beds. If PEI, only soap and water wash in the sink will work (leave the alcohol at home in the bottle).
Even the PC sheet needs a preparatory soap and water wash (and subsequent 30 minute soak on the printer at 80c to dry it out).
ps: Once the sheet is clean (handled only by the edges, cleaned and dried using fresh paper towels, etc.) - then adding 10c to the bed temp can help keep PLA sticking. Reducing the print fan speed can hep, but if you have bridges you need to manage the bridge and non bridge speeds in the slice. Next step is enclosing the printer so the part stays warm and doesn't warp.