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Loftsmith is a browser based CAD platform designed for people who own an FDM 3D printer but do not want to learn traditional engineering software. Users describe a functional part in plain language, provide a measurement or photo reference, and receive a parametric CAD model designed around their printer, filament, hardware, and required dimensions. The platform supports printers including Bambu Lab, Prusa, Creality, Voron, and generic printer profiles. It checks build volume, bed fit, overhangs, wall thickness, clearances, and print orientation before export. Designs can be downloaded as STL files per part or as 3MF files arranged on the printer bed. Pro users can also access STEP export in beta. Loftsmith includes browser based sliders for adjusting models, visual feedback, engineering checks, test prints for risky sections, assembly manuals, and PDF help. It can evaluate practical concerns such as bending stress, snap fit behavior, tip over risk, and mechanical clearances. Example projects include camera mounts, planetary gear bearings, chainmail, toolboxes, brackets, hooks, enclosures, and RC components. Free users receive one initial design and seven starter credits, while paid plans provide additional credits, private projects, commercial use, and faster design capacity.
