Instant digital download · Commercial use included · 4.8★ from 776 reviews
Carved wood relief of a skull above a chopper motorcycle with a scorpion near the front wheel
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Gothic & Skull Art

Skull and Chopper Biker Bas-Relief STL for CNC Carving

$10.39 $11.54 10% off

$10.39 here, $12.99 for the same file on Etsy · 12 sold this year · 38 people favourited it

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  • 📦 Instant digital download (STL file)
  • 🛠️ Tested in Aspire, VCarve Pro, Carveco, ArtCAM, Fusion 360
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📐 Design facts
Carving it at your size
Carving size
4 × 8 in (102 × 203 mm)
Relief depth
0.82 in (20.8 mm)
Board thickness
1.25 in or thicker
Rough with
1/8 in end mill, 40% stepover
Finish with
1/16 in tapered ball nose, 10% stepover
Estimated carve time
about 3 h 20 min (roughing 55 min, finishing 2 h 25 min)
Carving size
6 × 12 in (153 × 305 mm)
Relief depth
1.2 in (31.2 mm)
Board thickness
1.5 in or thicker
Rough with
1/4 in end mill, 40% stepover
Finish with
1/8 in ball nose, 10% stepover
Estimated carve time
about 3 h 30 min (roughing 50 min, finishing 2 h 45 min)
Carving size
9 × 18 in (229 × 457 mm)
Relief depth
1.8 in (46.8 mm)
Board thickness
2.5 in or thicker
Rough with
1/4 in end mill, 40% stepover
Finish with
1/8 in ball nose, 10% stepover
Estimated carve time
about 8 h 45 min (roughing 2 h 40 min, finishing 6 h 5 min)
Carving size
12 × 24 in (305 × 610 mm)
Relief depth
2.5 in (62.3 mm)
Board thickness
3 in or thicker
Rough with
1/4 in end mill, 40% stepover
Finish with
1/4 in ball nose (1/8 in for the finest detail, about twice as long), 10% stepover
Estimated carve time
about 11 h 45 min (roughing 6 h 20 min, finishing 5 h 25 min)

Estimates for a mid-size hobby machine (Shapeoko, X-Carve, Onefinity class). Scaling all three axes together keeps the depth in proportion; for thinner stock scale Z on its own. Hardwoods with fine grain (cherry, hard maple, walnut, basswood) hold this detail best. Check your exact setup in Will it cut, free, nothing uploaded.

How we estimate carve time

Finishing is one raster pass over the whole carving with the ball nose shown, at 10% stepover and half of a 1,800 mm/min (71 in/min) feed. Roughing assumes about 45% of the block above the base is waste, cleared with the end mill shown at 40% stepover and 3 mm per pass (1.5 mm for the 1/8 in end mill) at the full feed. The model leaves out acceleration, tool changes and moves between passes, so a real job usually takes somewhat longer. Times are rounded to 5 minutes.

File format
STL only decimated high-quality mesh, binary STL
Model size as supplied
143.1 × 285.9 × 29.24 mm
Shape
portrait, 0.501:1
Carve depth
20.4% of the width
Mesh
2,022,878 triangles · 96.5 MB
Base
flat and sitting at zero, ready to machine

Opens directly in Aspire, VCarve Pro, Carveco, ArtCAM and Fusion 360, and in any slicer for 3D printing. For a laser, the relief is first turned into a greyscale depth image, which our Laser Studio app does from this STL. STL only, no OBJ or DXF: the DXF files used in CNC work hold 2D outlines, not the 3D relief surface. Scale it to whatever panel you are cutting. Scaling all three axes together keeps the depth in proportion; scale Z on its own for a shallower carve. How to open it in your software.

759 five-star reviews from carvers
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About this design

A giant skull rises out of the grain, jaws parted, while a chopper roars straight at you from the shadows below. There is even a scorpion tucked near the front wheel. Carve this one and you get a panel that stops people mid-step, the kind of dark, muscular piece that belongs over a workbench or on a garage wall where the engines live. This is a high-detail bas-relief STL with real sculpted depth, not a flat stamp. The skull's hollow eyes, the spokes and treads on the bike, the rocky carved border, all of it reads clean once the toolpaths run. It is built for CNC routers and tests well in Aspire, VCarve Pro, Carveco, ArtCAM, and Fusion 360. You can also run it on a 3D printer in resin or FDM, or push it through a laser for depth engraving. For a crisp finish, rough it out with a 6mm end mill at 40 percent stepover, then come back with a 3mm ball nose at 10 percent stepover to pull out the fine teeth, tire tread, and grain detail. Walnut, oak, or maple all carry this design beautifully. Make it as wall art, a man-cave centerpiece, a bold sign for a bike shop, or a one-off gift for the rider in your life. This is an instant digital download with commercial use included, so carve it for yourself, sell the finished pieces at your next show, or hand one over as a gift nobody forgets. Add it to your cart and have your toolpaths running tonight.
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Burn this design, or burn onto it

Laser Studio opens this STL with zero conversion and turns them into a ready-to-burn 3D-illusion engrave. Carving on your CNC instead? CNC Match lines up a name, a date or shading on a photo of the finished piece, so the laser burns right onto the carving.

Windows desktop app · $40 once · free updates · it prepares the files, your laser software burns them

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Customer reviews & carves

★ 5.0 · 1 review

Piaciuto tantissimo , è perfetto

— Verified buyer, verified carver
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$10.39