The primer bulb design do not need support and the head of the bulb is a flat surface to avoid smearing.

Print settings for Ninjaflex (85A):

• copied Prusa Generic-Flex profile and adjusted extrusion multiplier to 1,3
• printed on smooth PEI print plate using adhesive tape as seperation layer
• before printing Ninjaflex I recommend to clean the nozzle by cold pull