This coaxial-rotor helicopter display project preserves a complete airframe with two rotor levels, original rotor blades, tail surfaces, landing wheels, cockpit glazing, short wings and existing mounted details. The finished illustration uses the supplied blue-grey body, pale nose, dark glazing and original markings. It shows the model upright on an illustrative plinth in a hobby workshop. The image is a digital presentation rather than evidence of a physically printed, assembled or flight-tested miniature.

DOWNLOAD CONTENTS
Two ZIP archives preserve two separately retained native resource versions. Each archive contains its own editable FBX and Blender scene, twenty-seven associated appearance resources, both retained OBJ viewing alternatives, an English guide, an integrity manifest, CC0 information and the current presentation image. The archives are alternative resource versions rather than parts intended to be combined into one assembly. The manifest identifies each neutral filename and its role. An earlier unbound presentation photograph is retained privately rather than reused as the finished cover.

PRESERVATION CHECKS
Both FBX versions are independently reopened before and after neutralization. Both Blender copies are saved and reopened with Blender 5.2. Each native scene retains eighteen mesh objects and 118,944 surface triangles. Numerical geometry, UV coordinates, material assignments, node relationships, hierarchy and decoded bound-image pixels are compared. Previously unresolved texture paths are restored only to supplied resources using format-aware path-field changes; the remaining non-path native data are checked separately. All twenty-seven appearance resources in each archive retain their decoded pixels and effective orientation.

The two public OBJ alternatives are independently preserved. Vertex, face, normal, smoothing and vertex-colour statements retain their original numeric payloads; labels are replaced with independent identifiers. Their arrangements and supplied viewing colours can differ. Neither OBJ is substituted for the other. Native scenes provide the editable appearance resources. Mesh-object counts do not establish a number of independently printable pieces, mechanical fit or working articulation. Original files and private preservation receipts remain archived.

PRINTING PREPARATION - UNTESTED
Open a working copy and confirm units, intended dimensions and printer build volume. Inspect thin rotor blades, rotor hubs, tail edges, landing-gear legs, glazing boundaries, small mounted details, open boundaries and intersecting surfaces. A complete-looking model can still need watertight repairs, thickening, separation or hollowing. Perform those changes only on a copy after examining the actual geometry. Rotor movement, balance, strength, articulation, flight capability and powered operation have not been verified. Do not treat a decorative surface mesh as an airworthy structure.

For suitable equipment and adequately thick details, resin layers around 0.03-0.05 mm or FDM layers around 0.12-0.20 mm may be conditional starting ranges, not tested settings. Choose material, nozzle, temperature and supports for the measured geometry and machine. Fine layers do not repair inadequate thickness. Test a blade tip, wheel or small detail first. Plan supports and removal access to protect narrow members and nearby surfaces. For resin cavities, inspect drainage and cleaning access before hollowing. A reliable support profile, print time, material consumption and part fit have not been established.

SCALE AND FINISHING
Display normalization, scene-object counts and earlier filenames do not certify physical scale. Confirm a known dimension independently. Uniform resize percentage equals target measured dimension divided by current measured dimension multiplied by 100. Recheck thicknesses, clearances and support access afterward. Prime a sample, remove support marks gently and mask established body, glazing, rotor and trim boundaries. The supplied appearance does not establish a measured historical paint code. Avoid filling small details with thick paint.

IMAGE AND RIGHTS
A fresh native render and matching mask preserve the actual helicopter and its existing details while local ComfyUI/Qwen on this PC generates the surrounding workshop. Protected foreground model pixels stay unchanged. The plinth and workshop props are illustrative scenery, not additional downloadable hardware. Public filenames are independent neutral identifiers and omit private source paths. Renaming does not make recognizable geometry anonymous. The uploader explicitly authorized free CC0 redistribution. The publishing account does not claim original design authorship or manufacturer endorsement.

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