80+ Alpha Map Textures Bundle

ALPHA MAP BUNDLE

81 Sculpting Alpha Maps for Blender — Skin, Fabric, Leather, Scale, Fingerprint & Organic Surface Detail

A curated library of 81 high-resolution alpha maps built for real-time detailing in Blender's Sculpt Mode. Each alpha ships as a ready-to-use sculpt brush, pre-filed into an asset catalog, plus a full reference preview so you know exactly what you're picking up before you drop it on a mesh.

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WHAT'S INCLUDED

• • 81 alpha maps — .exr, 4096 × 4096, linear / non-color
• • 109 sculpt brushes — ready to use, Draw type, pre-tuned strength & sample bias, filed into a custom "AlphaMapBundle" asset catalog
• • 81 preview renders — one reference screenshot per alpha, sculpted onto a test sphere with the full Blender UI visible, 1920 × 1080
• • 9 category collages — one labeled contact sheet per category, 1920 × 1080, saved inside that category's own preview folder
• • Cover art — marketing thumbnails for store / listing use

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FOLDER STRUCTURE

AlphaMapBundle/

1) AlphaMaps/ — the .exr alpha textures, sorted into 9 category folders:

   • Skin_Alpha

   • Fabric_Alpha

   • Leather_Alpha

   • Fingerprint_Alpha

   • Reptile_Scale_Alpha

   • Hair_Fur_Alpha

   • Crack_Weathered_Alpha

   • Organic_Structure_Alpha

   • Misc_Alpha

2) SculptPreviews/ — the same 9 categories, mirrored 1:1 with AlphaMaps. Each category folder contains its preview screenshots plus the category collage.

3) AlphaMapBundle.blend — source file with all 109 brushes pre-built.

Every category folder in AlphaMaps has a matching folder of the same name in SculptPreviews, with the same file count — so what you see in the preview is exactly what you get in the brush.

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CATEGORY BREAKDOWN — 81 ALPHAS TOTAL

• SKIN — 30 alphas
  • Pores, wrinkles, dry and cracked skin, palm lines, freckles, fine arm hair. The largest and most varied set in the pack.
• FABRIC — 15 alphas
  • Crumpled and draped cloth, woven and braided textures, linen, gauze, quilting.
• CRACK & WEATHERED — 7 alphas
  • Branching cracks, cracked plaster, peeling paint, rough concrete, weathered vein patterns.
• FINGERPRINT — 7 alphas
  • High-contrast and photographic fingerprint ridge patterns.
• REPTILE SCALE — 7 alphas
  • Reptile and fish-scale patterns, scale grids, wave-scale textures.
• LEATHER — 6 alphas
  • Grained, pebbled, quilted and cracked leather.
• HAIR & FUR — 4 alphas
  • Hair strand and fur swirl textures.
• ORGANIC STRUCTURE — 3 alphas
  • Porous organic structure, Voronoi / generative lattice, trabecular (spongy bone) structure.
• MISC — 2 alphas
  • Fiber scratch texture, liquid swirl.

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TECHNICAL SPECS

• Format — OpenEXR (.exr), 32-bit float. Single-channel height data replicated across RGB, alpha = 1.0

• Resolution — 4096 × 4096 per map

• Color space — Non-Color (linear), already set correctly on import in the provided .blend

• Value range — Centered at 0.5 (mid-gray = neutral surface). Brighter = raised, darker = recessed. Standard Blender "Draw" brush convention

• Brush settings (pre-configured) — Strength approx. 0.2–0.3, Texture Sample Bias approx. -0.5, Stroke Method = Anchored

• Generated with— the BraineyBites Alpha Map Generator add-on for Blender, using its photo-to-alpha conversion pipeline (detail extraction via frequency separation), then rendered into sculpt brush assets

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HOW TO USE

1. Open AlphaMapBundle.blend, or append / link the Brush datablocks you want into your own file.

2. In Sculpt Mode, open the Asset Shelf and find the AlphaMapBundle catalog. Every brush is there with a live preview icon.

3. Click a brush and sculpt. Strength and sample bias are already tuned to a usable default — adjust per stroke as normal.

4. Prefer working from the raw textures? The .exr files in AlphaMaps/ load directly into any sculpt brush's texture slot (Texture → Open, mapping = View Plane).

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PLEASE READ BEFORE PURCHASING — A NOTE ON SOURCE QUALITY

I want to be upfront about how this pack was made, so there are no surprises.

• These alphas were generated by running a collected set of reference images — a mix of macro photography and other reference material gathered for this purpose — through the Alpha Map Generator add-on's automated photo-to-alpha pipeline. They are not sourced from professional photogrammetry or 3D scans, and source image quality varies. Some references are sharp, high-resolution macro shots with excellent depth cues. Others are lower-resolution, compressed, or were shot and lit in a way the extraction process reads imperfectly.
• Unusably blurry or watermarked images were removed during curation, but not every remaining alpha captures fine detail with the same fidelity. A handful are softer or less pronounced than the best examples in their category.
• The preview renders in SculptPreviews are the most honest way to judge each alpha. What you see sculpted onto the sphere there is representative of what the brush will actually produce. I strongly recommend browsing the preview for a specific alpha, or its category collage, before relying on it for hero or close-up work.
• Because these come from varied source material rather than a single consistent scan rig, relief depth and scale are not perfectly uniform across the set. Expect to adjust brush Strength per alpha, per project and per mesh scale — the same as with any third-party alpha library.
• This is a detail and relief library, not a finished production asset. It's meant to speed up sculpting, not replace it. If a specific alpha doesn't hold up at the resolution you need, it's most likely one of the softer source images described above rather than a processing error — check the matching preview render first.

Before buying, please review the full brush details screenshots here:

• https://drive.google.com/drive/folders/1ff8z4y9rClLjLqhnjQdydlMIyg0A0GDm?usp=sharing

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Every alpha, brush and preview shares the same base name across all three folders for easy cross-referencing — for example, skin_wrinkle_texture_knuckle_01. Questions about a specific category or alpha should reference the file name directly.