Copper coil bobbin 15 mm long (ish)

thingiverse

A Dual Component Bobbin: Precision-Crafted for Maximum Efficiency. Dimensionally precise, this expertly engineered bobbin boasts internal and external lengths of 15mm and 21mm respectively. Its robust diameter of approximately 16mm guarantees seamless interaction with high-quality magnetic rods. With a capacity to comfortably accommodate ferrite rods measuring 5 mm in diameter, this design elevates transformer functionality. Unencumbered by structural flaws, our expertly optimized bobbin design enables a smooth printing experience that results in two distinct parts without the need for any supporting materials. This precise printability is effortlessly achievable with an uncompromising 0.4mm nozzle and layers carefully crafted to be as thin as 0.2mm. The effortless process of combining these printed components can be initiated once both have completed their printing cycles. Securely attach the top portion to the bottom section using high-quality superglue, taking meticulous care to perfectly align the bobbin's taper direction in a manner that precisely matches the two parts' respective angles. Note: Printing at an optimal 80% infill may optimize this design's performance for maximum results, although specifics about this printing parameter will have to remain speculative as it's presently indelibly fixed in the mind of the print designer.