JWei J515–J518 solid carbide router/milling bits for JWei digital cutters, with J515 a general‑purpose 1‑flute upcut and J516–J518 progressively heavier‑duty variants for harder materials and more demanding routing.
| Model | Cutting Ø (mm) | Milling depth (mm) | Shank Ø (mm) | Total length (mm) | Flutes / Type | Cut direction | Typical materials / applications |
|---|---|---|---|---|---|---|---|
| J515 | 3.175 mm | 12 mm | 6 mm | 50 mm | 1-tooth (one flute) — upcut | Upcut | PVC foam, acrylics, MDF, wood, ACP — general- purpose small-diameter routing. |
| J516 | 4.00 mm | 12 mm | 6 mm | 50 mm | 1-tooth (one flute) — upcut | Upcut | PVC foam, MDF, ACP, wood — slightly larger general purpose bit for deeper/wider cuts. |
| J517 | 6.00 mm | 22 mm | 6 mm | 50 mm | 1-tooth — upcut | Upcut | General purpose for thicker foam/board, deeper profiles and pocketing. (common spec on distributor pages). |
| J518 | (varies — commonly 6.00 / 3.175 options listed) | (varies; often 12–25 mm shown) | 6 mm | ~50 mm | 1-flute / one-tooth end mill (carbide) | Upcut | Offered as a one-flute end mill in multi-pack listings — used for plastics, foams, acrylics, soft composites. |
Key notes & practical tips
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Shank standardization: Most JWEI router bits for these cutters use a 6 mm shank (fits many JWEI/flatbed router collets). Confirm your machine collet before purchase.
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Flute / tooth count: These J-series bits are commonly single-flute (one tooth) upcut bits — that design helps clear chips quickly and is common for foam, acrylic and thin plastics.
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Material matching: Use these bits for soft-to-medium materials (PVC foam, MDF, ACP, acrylics, soft composites). For hardwoods, metals, or abrasive composites consider a different cutter geometry/coating.
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Depth vs. diameter: J517 shows a deeper milling depth (22 mm) suitable for thicker stock and deeper pocketing; J515/J516 are shallower (12 mm) — better for thinner sheet work.
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