High Country Tools RIPPER-38-DLC
RIPPER-38-DLC - RIPPER 3/8" 3-Flute Roughing End Mill
Type: roughing end mill · Diameter: 0.375" · Flutes: 3 · Shank: 0.375"
Starting points only, sourced from the manufacturers' own published data. Every machine differs: test in scrap, tune by ear. Neither ChipLoad nor the manufacturers are responsible for broken tools.
Published values, summarized per material and machine class. For the full CAM library (plunge, depth, stepover), download it from the manufacturer.
| Material | Machine class | RPM | Feed IPM | Chip load (in) | Note | Source |
|---|---|---|---|---|---|---|
| Acrylic / PVC (hard plastic) | hobby-ultralight | 12000 | 37.5 | 0.00104 | High Country Tools starting point | High Country Tools |
| Acrylic / PVC (hard plastic) | hobby-light | 12500 | 60.8 | 0.00162 | High Country Tools starting point | High Country Tools |
| Acrylic / PVC (hard plastic) | hobby-rigid | 12500 | 86.8 | 0.00231 | High Country Tools starting point | High Country Tools |
| Acrylic / PVC (hard plastic) | business | 12500 | 121.5 | 0.00324 | High Country Tools starting point ⚠ Outlier: ours 0.00324" vs median 0.009" of 3 other manufacturer(s): Amana Tool, Freud, Vortex (-64%) | High Country Tools |
| Acrylic / PVC (hard plastic) | industrial | 12500 | 147.6 | 0.00394 | High Country Tools starting point ✓ Cross-checked | High Country Tools |
| Epoxy / resin | hobby-ultralight | 12000 | 24.0 | 0.00067 | High Country Tools starting point | High Country Tools |
| Epoxy / resin | hobby-light | 14500 | 45.1 | 0.00104 | High Country Tools starting point | High Country Tools |
| Epoxy / resin | hobby-rigid | 14500 | 64.4 | 0.00148 | High Country Tools starting point | High Country Tools |
| Epoxy / resin | business | 14500 | 90.2 | 0.00207 | High Country Tools starting point ⚠ Outlier: ours 0.00207" vs median 0.009" of 3 other manufacturer(s): Amana Tool, Freud, Vortex (-77%) | High Country Tools |
| Epoxy / resin | industrial | 14500 | 109.6 | 0.00252 | High Country Tools starting point ⚠ Outlier: ours 0.00252" vs median 0.009" of 3 other manufacturer(s): Amana Tool, Freud, Vortex (-72%) | High Country Tools |
| HDPE / UHMW / nylon (soft plastic) | hobby-ultralight | 11500 | 40.3 | 0.00117 | High Country Tools starting point | High Country Tools |
| HDPE / UHMW / nylon (soft plastic) | hobby-light | 11500 | 62.6 | 0.00181 | High Country Tools starting point | High Country Tools |
| HDPE / UHMW / nylon (soft plastic) | hobby-rigid | 11500 | 89.5 | 0.00259 | High Country Tools starting point | High Country Tools |
| HDPE / UHMW / nylon (soft plastic) | business | 11500 | 125.2 | 0.00363 | High Country Tools starting point ✓ Cross-checked | High Country Tools |
| HDPE / UHMW / nylon (soft plastic) | industrial | 11500 | 152.1 | 0.00441 | High Country Tools starting point ✓ Cross-checked | High Country Tools |
| Hardwood | hobby-ultralight | 12000 | 30.0 | 0.00083 | High Country Tools starting point | High Country Tools |
| Hardwood | hobby-light | 18000 | 70.0 | 0.0013 | High Country Tools starting point | High Country Tools |
| Hardwood | hobby-rigid | 18000 | 100.0 | 0.00185 | High Country Tools starting point | High Country Tools |
| Hardwood | business | 18000 | 140.0 | 0.00259 | High Country Tools starting point ⚠ Outlier: ours 0.00259" vs median 0.015" of 3 other manufacturer(s): Freud, SpeTool, Vortex (-83%) | High Country Tools |
| Hardwood | industrial | 18000 | 170.0 | 0.00315 | High Country Tools starting point ⚠ Outlier: ours 0.00315" vs median 0.015" of 3 other manufacturer(s): Freud, SpeTool, Vortex (-79%) | High Country Tools |
| Hardwood - Dense (maple, oak, ash) | hobby-ultralight | 12000 | 27.0 | 0.00075 | High Country Tools starting point | High Country Tools |
| Hardwood - Dense (maple, oak, ash) | hobby-light | 18000 | 63.0 | 0.00117 | High Country Tools starting point | High Country Tools |
| Hardwood - Dense (maple, oak, ash) | hobby-rigid | 18000 | 90.0 | 0.00167 | High Country Tools starting point | High Country Tools |
| Hardwood - Dense (maple, oak, ash) | business | 18000 | 126.0 | 0.00233 | High Country Tools starting point ⚠ Outlier: ours 0.00233" vs median 0.015" of 3 other manufacturer(s): Freud, SpeTool, Vortex (-84%) | High Country Tools |
| Hardwood - Dense (maple, oak, ash) | industrial | 18000 | 153.0 | 0.00283 | High Country Tools starting point ⚠ Outlier: ours 0.00283" vs median 0.015" of 3 other manufacturer(s): Freud, SpeTool, Vortex (-81%) | High Country Tools |
| MDF / particleboard | hobby-ultralight | 12000 | 33.0 | 0.00092 | High Country Tools starting point | High Country Tools |
| MDF / particleboard | hobby-light | 17000 | 72.7 | 0.00143 | High Country Tools starting point | High Country Tools |
| MDF / particleboard | hobby-rigid | 17000 | 103.9 | 0.00204 | High Country Tools starting point | High Country Tools |
| MDF / particleboard | business | 17000 | 145.5 | 0.00285 | High Country Tools starting point ⚠ Outlier: ours 0.00285" vs median 0.013" of 5 other manufacturer(s): Amana Tool, Freud, Onsrud, SpeTool, Vortex (-78%) | High Country Tools |
| MDF / particleboard | industrial | 17000 | 176.6 | 0.00346 | High Country Tools starting point ⚠ Outlier: ours 0.00346" vs median 0.013" of 5 other manufacturer(s): Amana Tool, Freud, Onsrud, SpeTool, Vortex (-73%) | High Country Tools |
| Plywood - Baltic birch | hobby-ultralight | 12000 | 28.5 | 0.00079 | High Country Tools starting point | High Country Tools |
| Plywood - Baltic birch | hobby-light | 18000 | 66.5 | 0.00123 | High Country Tools starting point | High Country Tools |
| Plywood - Baltic birch | hobby-rigid | 18000 | 95.0 | 0.00176 | High Country Tools starting point | High Country Tools |
| Plywood - Baltic birch | business | 18000 | 133.0 | 0.00246 | High Country Tools starting point ⚠ Outlier: ours 0.00246" vs median 0.0165" of 3 other manufacturer(s): Amana Tool, Freud, Vortex (-85%) | High Country Tools |
| Plywood - Baltic birch | industrial | 18000 | 161.5 | 0.00299 | High Country Tools starting point ⚠ Outlier: ours 0.00299" vs median 0.0165" of 3 other manufacturer(s): Amana Tool, Freud, Vortex (-82%) | High Country Tools |
| Plywood - Melamine / laminate | hobby-ultralight | 12000 | 25.5 | 0.00071 | High Country Tools starting point | High Country Tools |
| Plywood - Melamine / laminate | hobby-light | 18000 | 59.5 | 0.0011 | High Country Tools starting point | High Country Tools |
| Plywood - Melamine / laminate | hobby-rigid | 18000 | 85.0 | 0.00157 | High Country Tools starting point | High Country Tools |
| Plywood - Melamine / laminate | business | 18000 | 119.0 | 0.0022 | High Country Tools starting point ⚠ Outlier: ours 0.0022" vs median 0.0165" of 3 other manufacturer(s): Amana Tool, Freud, Vortex (-87%) | High Country Tools |
| Plywood - Melamine / laminate | industrial | 18000 | 144.5 | 0.00268 | High Country Tools starting point ⚠ Outlier: ours 0.00268" vs median 0.0165" of 3 other manufacturer(s): Amana Tool, Freud, Vortex (-84%) | High Country Tools |
| Softwood (pine, cedar, fir) | hobby-ultralight | 12000 | 34.5 | 0.00096 | High Country Tools starting point | High Country Tools |
| Softwood (pine, cedar, fir) | hobby-light | 17000 | 76.0 | 0.00149 | High Country Tools starting point | High Country Tools |
| Softwood (pine, cedar, fir) | hobby-rigid | 17000 | 108.6 | 0.00213 | High Country Tools starting point | High Country Tools |
| Softwood (pine, cedar, fir) | business | 17000 | 152.1 | 0.00298 | High Country Tools starting point ⚠ Outlier: ours 0.00298" vs median 0.01275" of 2 other manufacturer(s): Freud, SpeTool (-77%) | High Country Tools |
| Softwood (pine, cedar, fir) | industrial | 17000 | 184.7 | 0.00362 | High Country Tools starting point ⚠ Outlier: ours 0.00362" vs median 0.01275" of 2 other manufacturer(s): Freud, SpeTool (-72%) | High Country Tools |
Retrieved 2026-10-16. Get the tool file from the manufacturer: High Country Tools downloads