Who says desktop CNC is limited to static parts? Today, we're taking brass engraving to the next level by machining a multi-style collection of leather embossing stamps!
From cute paw prints to vintage monograms, we are using the extreme precision of the HiMill D1S to turn blank brass into the "soul mark" of your handcrafted leather goods. With our standardized machining workflow, you can effortlessly create endless custom designs without repeating yourself. Let’s dive in!
⚒️ I. Project Overview
Project Name DIY Brass Leather Stamp Collection
Equipment Used HiMill D1S Desktop CNC
Core Processes Multi-pattern Brass Relief Carving + Standardized Post-Processing
Applications Leather Embossing / Hot Foil Stamping, Brand Logos, Custom Gifts
Difficulty ★★★★☆ (Advanced: Requires tool matching for varied geometries)
Cycle Time Approx. 0.5 Hours per stamp (Batch machining saves time)
🎨 II. Prep & Design
The core philosophy of this stamp collection is a "Standardized Workflow + Differentiated Designs". Planning your layout and details ahead of time will double your efficiency.
1. Materials List:
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Brass Stock: 5mm thick. We used 25x25mm squares and 30mm diameter rounds (You can batch multiple stamps on a larger board and adjust sizes as needed).
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Stamping Accessories: Adjustable electric branding iron (Compatible with different stamp sizes).
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Polishing Supplies: Assorted sandpaper (400-2000 grit), polishing compound, buffing pads.
2. Essential Tooling (Universal for all designs):
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1.5mm Single Flute Spiral End Mill: Dedicated to brass roughing and profile cutting.
⚙️ III. CAM Strategy (Machining Parameters)
We established a universal parameter set that works for all patterns. With minor tweaks, it adapts perfectly to different details, making it incredibly beginner-friendly.
Brass Machining (Universal Settings):
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Tool: 1.5mm Single Flute Spiral End Mill (Metal-specific)
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Spindle Speed: 13,000 RPM
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Cutting Feed Rate (XY): 100 mm/min
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Plunge Feed Rate (Z): 100 mm/min
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Stepdown (Depth per pass): 2 mm
💡 Pro Tip: Draft Angles
When designing 3D models for leather stamping, ensure your relief has a slight draft angle (taper) rather than perfectly vertical walls. This makes the stamp release from the leather cleanly and prevents sticking during hot embossing!
🛠️ IV. Machining Process
The high-precision spindle and stable positioning of the HiMill D1S ensure that even in batch production, every single stamp maintains immaculate accuracy.
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Workholding & Calibration: Secure the brass block using a low-profile vise or toe clamps. This guarantees that positional deviation across all patterns is controlled within 0.01mm.
2.
Batch Roughing: Run the toolpaths to machine all stamps on the board. This removes the bulk material in one go, quickly defining the shape of each stamp.
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Unified Profile Cutting: Use the single flute end mill to cut the outer contours of all the stamps. The edges come out smooth and burr-free, laying a perfect foundation for the polishing stage.
✨ V. Post-Processing & Assembly
A standardized post-processing routine is what elevates these varied designs to a consistent, premium quality.
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Deburring: Use 400-grit sandpaper to smooth the outer edges, removing any machining marks. Progress to 800-1200 grit to refine the finish and prevent scratching the leather during stamping.
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Mirror Polishing: Sand the relief surface with 1500-2000 grit paper, then follow up with a buffing pad and polishing compound to achieve a mirror finish. The smoother the surface, the crisper and cleaner the embossed impression will be.
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Handle Installation: Attach a universal handle (or electric iron attachment) to each stamp. Use a non-slip washer and screw for a secure fit, making it ready for both manual hammering and heat pressing.
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Test Embossing: Test each stamp on scrap leather. Adjust the polishing details or pressing pressure to ensure a clear pattern and smooth release.
📸 VI. Final Showcase: A Stamp for Every Style
When these diverse brass stamps are pressed into the warm, tactile leather, every single impression sparks a unique vibe:
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The Paw Print: The soft, rounded lines pressed into the leather bring a healing, cute aesthetic—perfect for keychains and pet accessories.
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Vintage Symbols: Sharp, distinct textures combined with distressed leather scream retro-industrial. Ideal for journal and notebook covers.
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Lettering / Logo Stamps: Personalized monograms give every handcrafted piece a unique identity, instantly elevating its brand value.
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The Collection Advantage: One set of stamps allows you to switch between multiple styles effortlessly. Whether for personal crafting or custom gifts, there's a design for every occasion.
💡 HiMill D1S Review:
The creation of this stamp collection once again proves the "all-rounder" capability of the HiMill D1S:
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Batch Machining Stability: When machining multiple stamps on the same board, the repeatability is exceptional. The size and depth of every pattern are perfectly consistent, requiring zero recalibration.
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Detail Reproduction: From rounded paw prints to razor-sharp symbols, the machine perfectly replicates the minutest details. Lines are crisp, and the relief surface finish is superb.
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Limitless Creativity: If you can draw it, the D1S can turn it into a practical leather stamp. Easily build your own custom collection and unlock endless possibilities in leathercrafting!
