David K. Marchetti

Biography

David K. Marchetti is an Additive Manufacturing Engineer with 12 years of hands-on experience in FDM/FFF 3D printing, from prototype iteration to production-grade functional parts. Beginning with a RepRap Mendel in 2014, he has operated and calibrated over 30 consumer and professional 3D printers across Bambu Lab, Prusa, Creality, Anycubic, and Voron platforms — developing an empirical understanding of how temperature, retraction, speed, and material interact to produce (or ruin) a print.

After years of watching makers struggle with the same problem — "what temperature do I set for this filament on this printer?" — David founded Print Profiles Hub to create a single, searchable database of community-tested slicer profiles. Every profile on this site was tested by a real person with real filament, on a real printer, with real results. No theoretical guesses, no copy-pasted forum recommendations — just verified starting points that work.

Credentials & Expertise

• B.S. Mechanical Engineering, University of Illinois (Additive Manufacturing focus)
• 12 years in FDM/FFF 3D printing — from RepRap to Bambu Lab X1 Carbon
• Operated and calibrated 30+ consumer and professional 3D printer models
• Former Additive Manufacturing Engineer, Protolabs (3 years)
• Expert in Cura, PrusaSlicer, and Bambu Studio profile optimization
• Material testing contributor for eSun, Polymaker, and Sunlu filament TDS
• Published calibration guides referenced by r/3Dprinting and Voron community

Role at Print Profiles Hub

As the founder and lead curator of Print Profiles Hub, David oversees profile submission review, data verification, and editorial policy. Each submitted profile is reviewed for plausibility — nozzle temperature within material range, retraction distance appropriate for the extruder type, volumetric speed consistent with the hardware. He reviews community submissions within 5 business days and publishes only profiles with confirmed print results.