Ốp bật lửa Bic kèm dụng cụ nén và khêu thuốc

very strong design doesnt need really any infill

i just print with default settings + brim and that = 4.90m 

If you've got 4 meter coils you can remove the raft and print with 2 premeters and 5% infil and it is still pretty strong.