by SeongminBjorkArt·Modeling
Images © SeongminBjorkArt. Used for product review; image policy.
FormArmor Pro earns its place in the superhive library by pulling the repetitive parts of mold setup into a single organized Blender panel. It's clear about its limits: it assists with preparation rather than replacing mold-making knowledge, and draft analysis and silicone volume figures are planning tools, not guaranteed engineering results. A demo video is available.
FormArmor Pro is a Blender add-on for preparing mold parts directly from a 3D model. It gathers steps like building a shell, planning split lines, adding registration keys, checking release angles, estimating material, and preparing clean STL exports into one focused workflow, presented as a structured panel where the main mold-making steps are available in one place.
With it you can generate outer mold shells around a selected object, control wall thickness and clearance, and create single-part or multi-part layouts using automatic or manual split planes. It also adds registration keys for alignment, screw tabs for assembly and clamping, a pouring basin and vents, checks draft angles, estimates silicone volume, and batch-exports mold parts as STL files.
The add-on is built around a practical process: start with your model, run a preflight check, choose shell settings, decide how the mold should split, generate it, add alignment and casting features, then export the parts. It does not replace mold-making knowledge, and complex shapes may still require manual cleanup, adjustment, or testing. It requires Blender 4.2.0 or newer and a prepared mesh object.
Formarmorpro is best for artists, sculptors, prop makers, product designers, makers, and 3D printing users preparing mold parts from a 3D model, including silicone casting, sculpture and prop workflows, product prototypes, decorative objects, small production experiments, and 3D printed mold forms.
Formarmorpro is completely free to download and use.
FormArmor Pro requires Blender 4.2.0 or newer, so a current 4.2 install meets the stated minimum. You'll also need a prepared mesh object and basic familiarity with Blender selection, scale, and object editing to work with it comfortably. For best results, use clean mesh geometry and apply scale and rotation before generating a mold. It is marked as a Blender extension, and you can check the developer's page for the latest compatibility details on newer Blender releases before installing.
FormArmor Pro works from a prepared mesh object, and it expects clean geometry with scale and rotation already applied for reliable results. Basic knowledge of Blender selection, scale, and object editing is recommended, since the add-on assists with mold setup rather than teaching mold-making itself. The suggested process starts with your model, runs a preflight check, then moves through shell settings, split choices, mold generation, alignment and casting features, and finally export. Reviewing the mold parts carefully before export helps catch problems early.
FormArmor Pro treats its draft analysis and silicone volume estimates as planning tools rather than guaranteed engineering results. They help you check release angles and estimate material before committing to costly stages, but every model is different, and complex shapes may still require manual cleanup, adjustment, or testing. The developer recommends testing your mold digitally and reviewing the design before printing, casting, or using expensive materials. Treat the numbers and angle checks as a starting point for your own review, not a final verdict.
FormArmor Pro is listed as free in this catalog. Pricing and licensing can change, so check the developer's page for the current terms before downloading. It's published by SeongminBjorkArt and marked as a Blender extension. A demo video is available if you'd like to see more before deciding. Keep in mind the add-on assists with mold preparation and does not replace mold-making knowledge, so plan to review parting lines, release direction, wall strength, and final printability yourself.
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