3/8" downcut end mill feeds and speeds: chip load chart by material & machine

3/8" downcut end mill feeds and speeds

115 sourced settings from Harvey Tool, High Country Tools, Onsrud, SpeTool. Published chip loads range from 0.00075 to 0.0126 in per tooth. Pick your material:

abs (4) · acetal / delrin (pom) (2) · acrylic (10) · aluminum (4) · baltic birch plywood (10) · cast acrylic (4) · dense hardwood (maple, oak) (10) · epoxy resin (10) · extruded acrylic (4) · hardwood (11) · hdpe / uhmw (10) · mdf (11) · melamine (10) · polycarbonate (lexan) (4) · softwood (11)

Open the calculator →

Manufacturer / bit	Material	Machine class	RPM	Feed IPM	Chip load (in)	Source
High Country Tools END-38D2F-DLC	Acrylic / PVC (hard plastic)	hobby-ultralight	12000	45.3	0.00189	source
High Country Tools END-38D4F-DLC	Acrylic / PVC (hard plastic)	hobby-ultralight	12000	56.2	0.00117	source
High Country Tools END-38D2F-DLC	Plywood - Baltic birch	hobby-ultralight	12000	34.4	0.00143	source
High Country Tools END-38D4F-DLC	Plywood - Baltic birch	hobby-ultralight	12000	42.7	0.00089	source
High Country Tools END-38D2F-DLC	Hardwood - Dense (maple, oak, ash)	hobby-ultralight	12000	32.6	0.00136	source
High Country Tools END-38D4F-DLC	Hardwood - Dense (maple, oak, ash)	hobby-ultralight	12000	40.5	0.00084	source
High Country Tools END-38D2F-DLC	Epoxy / resin	hobby-ultralight	12000	29	0.00121	source
High Country Tools END-38D4F-DLC	Epoxy / resin	hobby-ultralight	12000	36	0.00075	source
High Country Tools END-38D2F-DLC	Hardwood	hobby-ultralight	12000	36.2	0.00151	source
High Country Tools END-38D4F-DLC	Hardwood	hobby-ultralight	12000	45	0.00094	source
High Country Tools END-38D2F-DLC	HDPE / UHMW / nylon (soft plastic)	hobby-ultralight	11500	48.6	0.00211	source
High Country Tools END-38D4F-DLC	HDPE / UHMW / nylon (soft plastic)	hobby-ultralight	11500	60.4	0.00131	source
High Country Tools END-38D2F-DLC	MDF / particleboard	hobby-ultralight	12000	39.9	0.00166	source
High Country Tools END-38D4F-DLC	MDF / particleboard	hobby-ultralight	12000	49.5	0.00103	source
High Country Tools END-38D2F-DLC	Plywood - Melamine / laminate	hobby-ultralight	12000	30.8	0.00128	source
High Country Tools END-38D4F-DLC	Plywood - Melamine / laminate	hobby-ultralight	12000	38.2	0.0008	source
High Country Tools END-38D2F-DLC	Softwood (pine, cedar, fir)	hobby-ultralight	12000	41.7	0.00174	source
High Country Tools END-38D4F-DLC	Softwood (pine, cedar, fir)	hobby-ultralight	12000	51.7	0.00108	source
High Country Tools END-38D2F-DLC	Acrylic / PVC (hard plastic)	hobby-light	12500	73.4	0.00294	source
High Country Tools END-38D4F-DLC	Acrylic / PVC (hard plastic)	hobby-light	12500	91.1	0.00182	source
High Country Tools END-38D2F-DLC	Aluminum 6061	hobby-light	16000	41.3	0.00129	source
High Country Tools END-38D2F-DLC	Plywood - Baltic birch	hobby-light	18000	80.3	0.00223	source
High Country Tools END-38D4F-DLC	Plywood - Baltic birch	hobby-light	18000	99.7	0.00139	source
High Country Tools END-38D2F-DLC	Hardwood - Dense (maple, oak, ash)	hobby-light	18000	76.1	0.00211	source
High Country Tools END-38D4F-DLC	Hardwood - Dense (maple, oak, ash)	hobby-light	18000	94.5	0.00131	source
High Country Tools END-38D2F-DLC	Epoxy / resin	hobby-light	14500	54.5	0.00188	source
High Country Tools END-38D4F-DLC	Epoxy / resin	hobby-light	14500	67.7	0.00117	source
High Country Tools END-38D2F-DLC	Hardwood	hobby-light	18000	84.5	0.00235	source
High Country Tools END-38D4F-DLC	Hardwood	hobby-light	18000	105	0.00146	source
High Country Tools END-38D2F-DLC	HDPE / UHMW / nylon (soft plastic)	hobby-light	11500	75.6	0.00329	source
High Country Tools END-38D4F-DLC	HDPE / UHMW / nylon (soft plastic)	hobby-light	11500	93.9	0.00204	source
High Country Tools END-38D2F-DLC	MDF / particleboard	hobby-light	17000	87.8	0.00258	source
High Country Tools END-38D4F-DLC	MDF / particleboard	hobby-light	17000	109.1	0.0016	source
High Country Tools END-38D2F-DLC	Plywood - Melamine / laminate	hobby-light	18000	71.9	0.002	source
High Country Tools END-38D4F-DLC	Plywood - Melamine / laminate	hobby-light	18000	89.2	0.00124	source
High Country Tools END-38D2F-DLC	Softwood (pine, cedar, fir)	hobby-light	17000	91.8	0.0027	source
High Country Tools END-38D4F-DLC	Softwood (pine, cedar, fir)	hobby-light	17000	114	0.00168	source
High Country Tools END-38D2F-DLC	Acrylic / PVC (hard plastic)	hobby-rigid	12500	104.8	0.00419	source
High Country Tools END-38D4F-DLC	Acrylic / PVC (hard plastic)	hobby-rigid	12500	130.2	0.0026	source
High Country Tools END-38D2F-DLC	Aluminum 6061	hobby-rigid	16000	59	0.00185	source
High Country Tools END-38D2F-DLC	Plywood - Baltic birch	hobby-rigid	18000	114.7	0.00319	source
High Country Tools END-38D4F-DLC	Plywood - Baltic birch	hobby-rigid	18000	142.5	0.00198	source
High Country Tools END-38D2F-DLC	Hardwood - Dense (maple, oak, ash)	hobby-rigid	18000	108.7	0.00302	source
High Country Tools END-38D4F-DLC	Hardwood - Dense (maple, oak, ash)	hobby-rigid	18000	135	0.00187	source
High Country Tools END-38D2F-DLC	Epoxy / resin	hobby-rigid	14500	77.8	0.00268	source
High Country Tools END-38D4F-DLC	Epoxy / resin	hobby-rigid	14500	96.7	0.00167	source
High Country Tools END-38D2F-DLC	Hardwood	hobby-rigid	18000	120.8	0.00335	source
High Country Tools END-38D4F-DLC	Hardwood	hobby-rigid	18000	150	0.00208	source
High Country Tools END-38D2F-DLC	HDPE / UHMW / nylon (soft plastic)	hobby-rigid	11500	108	0.0047	source
High Country Tools END-38D4F-DLC	HDPE / UHMW / nylon (soft plastic)	hobby-rigid	11500	134.1	0.00292	source
High Country Tools END-38D2F-DLC	MDF / particleboard	hobby-rigid	17000	125.5	0.00369	source
High Country Tools END-38D4F-DLC	MDF / particleboard	hobby-rigid	17000	155.8	0.00229	source
High Country Tools END-38D2F-DLC	Plywood - Melamine / laminate	hobby-rigid	18000	102.7	0.00285	source
High Country Tools END-38D4F-DLC	Plywood - Melamine / laminate	hobby-rigid	18000	127.5	0.00177	source
High Country Tools END-38D2F-DLC	Softwood (pine, cedar, fir)	hobby-rigid	17000	131.2	0.00386	source
High Country Tools END-38D4F-DLC	Softwood (pine, cedar, fir)	hobby-rigid	17000	162.9	0.0024	source
High Country Tools END-38D2F-DLC	Acrylic / PVC (hard plastic)	business	12500	146.8	0.00587	source
High Country Tools END-38D4F-DLC	Acrylic / PVC (hard plastic)	business	12500	182.3	0.00365	source
High Country Tools END-38D2F-DLC	Aluminum 6061	business	16000	82.7	0.00258	source
High Country Tools END-38D2F-DLC	Plywood - Baltic birch	business	18000	160.6	0.00446	source
High Country Tools END-38D4F-DLC	Plywood - Baltic birch	business	18000	199.5	0.00277	source
High Country Tools END-38D2F-DLC	Hardwood - Dense (maple, oak, ash)	business	18000	152.2	0.00423	source
High Country Tools END-38D4F-DLC	Hardwood - Dense (maple, oak, ash)	business	18000	189	0.00262	source
High Country Tools END-38D2F-DLC	Epoxy / resin	business	14500	109	0.00376	source
High Country Tools END-38D4F-DLC	Epoxy / resin	business	14500	135.3	0.00233	source
High Country Tools END-38D2F-DLC	Hardwood	business	18000	169.1	0.0047	source
High Country Tools END-38D4F-DLC	Hardwood	business	18000	210	0.00292	source
High Country Tools END-38D2F-DLC	HDPE / UHMW / nylon (soft plastic)	business	11500	151.2	0.00658	source
High Country Tools END-38D4F-DLC	HDPE / UHMW / nylon (soft plastic)	business	11500	187.8	0.00408	source
High Country Tools END-38D2F-DLC	MDF / particleboard	business	17000	175.7	0.00517	source
High Country Tools END-38D4F-DLC	MDF / particleboard	business	17000	218.1	0.00321	source
High Country Tools END-38D2F-DLC	Plywood - Melamine / laminate	business	18000	143.7	0.00399	source
High Country Tools END-38D4F-DLC	Plywood - Melamine / laminate	business	18000	178.5	0.00248	source
High Country Tools END-38D2F-DLC	Softwood (pine, cedar, fir)	business	17000	183.6	0.0054	source
High Country Tools END-38D4F-DLC	Softwood (pine, cedar, fir)	business	17000	228	0.00335	source
High Country Tools END-38D2F-DLC	Acrylic / PVC (hard plastic)	industrial	12500	178.2	0.00713	source
High Country Tools END-38D4F-DLC	Acrylic / PVC (hard plastic)	industrial	12500	221.3	0.00443	source
High Country Tools END-38D2F-DLC	Aluminum 6061	industrial	16000	100.4	0.00314	source
High Country Tools END-38D2F-DLC	Plywood - Baltic birch	industrial	18000	195.1	0.00542	source
High Country Tools END-38D4F-DLC	Plywood - Baltic birch	industrial	18000	242.2	0.00336	source
High Country Tools END-38D2F-DLC	Hardwood - Dense (maple, oak, ash)	industrial	18000	184.8	0.00513	source
High Country Tools END-38D4F-DLC	Hardwood - Dense (maple, oak, ash)	industrial	18000	229.5	0.00319	source
High Country Tools END-38D2F-DLC	Epoxy / resin	industrial	14500	132.3	0.00456	source
High Country Tools END-38D4F-DLC	Epoxy / resin	industrial	14500	164.3	0.00283	source
High Country Tools END-38D2F-DLC	Hardwood	industrial	18000	205.3	0.0057	source
High Country Tools END-38D4F-DLC	Hardwood	industrial	18000	255	0.00354	source
High Country Tools END-38D2F-DLC	HDPE / UHMW / nylon (soft plastic)	industrial	11500	183.6	0.00798	source
High Country Tools END-38D4F-DLC	HDPE / UHMW / nylon (soft plastic)	industrial	11500	228	0.00496	source
High Country Tools END-38D2F-DLC	MDF / particleboard	industrial	17000	213.3	0.00627	source
High Country Tools END-38D4F-DLC	MDF / particleboard	industrial	17000	264.9	0.0039	source
High Country Tools END-38D2F-DLC	Plywood - Melamine / laminate	industrial	18000	174.5	0.00485	source
High Country Tools END-38D4F-DLC	Plywood - Melamine / laminate	industrial	18000	216.7	0.00301	source
High Country Tools END-38D2F-DLC	Softwood (pine, cedar, fir)	industrial	17000	223	0.00656	source
High Country Tools END-38D4F-DLC	Softwood (pine, cedar, fir)	industrial	17000	276.9	0.00407	source
Onsrud 57-600	ABS	any	–	–	0.01–0.012	source
Onsrud 62-750	ABS	any	–	–	0.008–0.012	source
Onsrud 62-850	ABS	any	–	–	0.008–0.012	source
Onsrud 64-000/65-000	ABS	any	–	–	0.008–0.012	source
Harvey Tool SFL	Acetal / Delrin (POM)	any	–	–	0.0109	source
Harvey Tool SFL	Acetal / Delrin (POM)	any	–	–	0.0126	source
Onsrud 57-600	Cast acrylic	any	–	–	0.008–0.01	source
Onsrud 62-750	Cast acrylic	any	–	–	0.008–0.012	source
Onsrud 62-850	Cast acrylic	any	–	–	0.008–0.012	source
Onsrud 64-000/65-000	Cast acrylic	any	–	–	0.01–0.012	source
Onsrud 57-600	Extruded acrylic	any	–	–	0.01–0.012	source
Onsrud 62-750	Extruded acrylic	any	–	–	0.008–0.012	source
Onsrud 62-850	Extruded acrylic	any	–	–	0.008–0.012	source
Onsrud 64-000/65-000	Extruded acrylic	any	–	–	0.008–0.012	source
SpeTool Carbide	Hardwood	any	15000	180	0.006	source
SpeTool Carbide	MDF / laminate	any	15000	240	0.008	source
Onsrud 57-600	Polycarbonate (Lexan)	any	–	–	0.01–0.012	source
Onsrud 62-750	Polycarbonate (Lexan)	any	–	–	0.008–0.012	source
Onsrud 62-850	Polycarbonate (Lexan)	any	–	–	0.008–0.012	source
Onsrud 64-000/65-000	Polycarbonate (Lexan)	any	–	–	0.008–0.012	source
SpeTool Carbide	Softwood	any	15000	240	0.008	source

FAQ

What feeds and speeds for a 3/8" downcut end mill on a hobby-ultralight CNC router?
Published manufacturer data (High Country Tools) gives a chip load of 0.00075–0.00211 in per tooth and a feed of 29–60.4 IPM (18 sourced rows). Start low and test in scrap.

What feeds and speeds for a 3/8" downcut end mill on a hobby-light CNC router?
Published manufacturer data (High Country Tools) gives a chip load of 0.00117–0.00329 in per tooth and a feed of 41.3–114 IPM (19 sourced rows). Start low and test in scrap.

What feeds and speeds for a 3/8" downcut end mill on a hobby-rigid CNC router?
Published manufacturer data (High Country Tools) gives a chip load of 0.00167–0.0047 in per tooth and a feed of 59–162.9 IPM (19 sourced rows). Start low and test in scrap.

What feeds and speeds for a 3/8" downcut end mill on a business CNC router?
Published manufacturer data (High Country Tools) gives a chip load of 0.00233–0.00658 in per tooth and a feed of 82.7–228 IPM (19 sourced rows). Start low and test in scrap.

What feeds and speeds for a 3/8" downcut end mill on a industrial CNC router?
Published manufacturer data (High Country Tools) gives a chip load of 0.00283–0.00798 in per tooth and a feed of 100.4–276.9 IPM (19 sourced rows). Start low and test in scrap.

downcut end mill profile illustration3/8" downcut end mill feeds and speeds

FAQ

3/8" downcut end mill feeds and speeds