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Feeds and speeds for Acrylic

Acrylic (PMMA) cuts cleanly as long as chips are cleared quickly and the bit does not rub. For example: Cast acrylic (PMMA, Plexiglas).

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The most common bits

Bit	SpeedRPM	Feedmm/min	Plungemm/min	Depthmm	Chip loadmm
End mill Ø 1 mm2 flutes · upcut	20,000	320	100	0.3	0.008
End mill Ø 2 mm2 flutes · upcut	16,000	510	150	0.6	0.016
End mill Ø 3.175 mm2 flutes · upcut	16,000	810	240	0.95	0.025
End mill Ø 6 mm2 flutes · upcut	16,000	1,280	380	1.8	0.04
End mill Ø 6.35 mm2 flutes · upcut	16,000	1,280	380	1.9	0.04
Single-flute end mill Ø 3.175 mm1 flute	16,000	410	120	0.95	0.026
Ball nose Ø 1 mm2 flutes	20,000	260	80	0.3	0.006
Ball nose Ø 3.175 mm2 flutes	16,000	650	200	0.95	0.02
Ball nose Ø 6.35 mm2 flutes	16,000	1,020	310	1.9	0.032
V-bit 60° Ø 3.175 mm2 flutes	16,000	460	140	0.6	0.014
V-bit 90° Ø 3.175 mm2 flutes	16,000	460	140	0.6	0.014
V-bit 60° Ø 12.7 mm2 flutes	14,000	400	120	0.6	0.014
V-bit 90° Ø 12.7 mm2 flutes	14,000	400	120	0.6	0.014
Engraving bit 20°, tip 0.1 mm	16,000	130	40	0.2	0.008
Engraving bit 30°, tip 0.2 mm	16,000	130	40	0.2	0.008
PCB isolation end mill Ø 0.2 mm	20,000	160	50	0.1	0.004
PCB isolation end mill Ø 0.4 mm	20,000	160	50	0.2	0.004
Twist drill Ø 3 mm	10,000	240	240	6	–
PCB drill Ø 0.8 mm	20,000	130	130	1.5	–
PCB drill Ø 1 mm	20,000	160	160	2	–

Starting values without guarantee. Machine, spindle, clamping and bit condition all affect the right values.

All 113 bits for Acrylic

End mill

Bit	SpeedRPM	Feedmm/min	Plungemm/min	Depthmm	Chip loadmm
End mill Ø 0.8 mm2 flutes · upcut	20,000	260	80	0.25	0.006
End mill Ø 1 mm2 flutes · upcut	20,000	320	100	0.3	0.008
End mill Ø 1.2 mm2 flutes · upcut	20,000	380	110	0.35	0.009
End mill Ø 1.5 mm2 flutes · upcut	16,000	380	110	0.45	0.012
End mill Ø 2 mm2 flutes · upcut	16,000	510	150	0.6	0.016
End mill Ø 2.5 mm2 flutes · upcut	16,000	640	190	0.75	0.02
End mill Ø 3 mm2 flutes · upcut	16,000	770	230	0.9	0.024
End mill Ø 3.175 mm2 flutes · upcut	16,000	810	240	0.95	0.025
End mill Ø 3.175 mm2 flutes · upcut	16,000	810	240	0.95	0.025
End mill Ø 3.175 mm2 flutes · upcut	16,000	810	240	0.95	0.025
End mill Ø 4 mm2 flutes · upcut	16,000	1,020	310	1.2	0.032
End mill Ø 5 mm2 flutes · upcut	16,000	1,280	380	1.5	0.04
End mill Ø 6 mm2 flutes · upcut	16,000	1,280	380	1.8	0.04
End mill Ø 6 mm2 flutes · upcut	16,000	1,280	380	1.8	0.04
End mill Ø 6.35 mm2 flutes · upcut	16,000	1,280	380	1.9	0.04
End mill Ø 8 mm2 flutes · upcut	16,000	1,280	380	2.4	0.04

Single-flute end mill

Bit	SpeedRPM	Feedmm/min	Plungemm/min	Depthmm	Chip loadmm
Single-flute end mill Ø 1.5 mm1 flute	16,000	190	60	0.45	0.012
Single-flute end mill Ø 2 mm1 flute	16,000	260	80	0.6	0.016
Single-flute end mill Ø 2.5 mm1 flute	16,000	320	100	0.75	0.02
Single-flute end mill Ø 3 mm1 flute	16,000	380	110	0.9	0.024
Single-flute end mill Ø 3.175 mm1 flute	16,000	410	120	0.95	0.026
Single-flute end mill Ø 4 mm1 flute	16,000	510	150	1.2	0.032
Single-flute end mill Ø 5 mm1 flute	16,000	640	190	1.5	0.04
Single-flute end mill Ø 6 mm1 flute	16,000	640	190	1.8	0.04
Single-flute end mill Ø 6.35 mm1 flute	16,000	640	190	1.9	0.04

Ball nose

Bit	SpeedRPM	Feedmm/min	Plungemm/min	Depthmm	Chip loadmm
Ball nose Ø 0.5 mm2 flutes	20,000	130	40	0.15	0.003
Ball nose Ø 1 mm2 flutes	20,000	260	80	0.3	0.006
Ball nose Ø 1.5 mm2 flutes	16,000	310	90	0.45	0.01
Ball nose Ø 2 mm2 flutes	16,000	410	120	0.6	0.013
Ball nose Ø 2.5 mm2 flutes	16,000	510	150	0.75	0.016
Ball nose Ø 3 mm2 flutes	16,000	610	180	0.9	0.019
Ball nose Ø 3.175 mm2 flutes	16,000	650	200	0.95	0.02
Ball nose Ø 4 mm2 flutes	16,000	820	250	1.2	0.026
Ball nose Ø 5 mm2 flutes	16,000	1,020	310	1.5	0.032
Ball nose Ø 6 mm2 flutes	16,000	1,020	310	1.8	0.032
Ball nose Ø 6.35 mm2 flutes	16,000	1,020	310	1.9	0.032
Ball nose Ø 8 mm2 flutes	16,000	1,020	310	2.4	0.032

V-bit

Bit	SpeedRPM	Feedmm/min	Plungemm/min	Depthmm	Chip loadmm
V-bit 30° Ø 3.175 mm2 flutes	16,000	460	140	0.6	0.014
V-bit 45° Ø 3.175 mm2 flutes	16,000	460	140	0.6	0.014
V-bit 60° Ø 3.175 mm2 flutes	16,000	460	140	0.6	0.014
V-bit 90° Ø 3.175 mm2 flutes	16,000	460	140	0.6	0.014
V-bit 120° Ø 3.175 mm2 flutes	16,000	460	140	0.6	0.014
V-bit 60° Ø 6 mm2 flutes	16,000	460	140	0.6	0.014
V-bit 90° Ø 6 mm2 flutes	16,000	460	140	0.6	0.014
V-bit 60° Ø 12 mm2 flutes	14,000	400	120	0.6	0.014
V-bit 90° Ø 12 mm2 flutes	14,000	400	120	0.6	0.014
V-bit 60° Ø 12.7 mm2 flutes	14,000	400	120	0.6	0.014
V-bit 90° Ø 12.7 mm2 flutes	14,000	400	120	0.6	0.014
V-bit 120° Ø 12.7 mm2 flutes	14,000	400	120	0.6	0.014
V-bit 60° Ø 19.05 mm2 flutes	14,000	400	120	0.6	0.014
V-bit 90° Ø 19.05 mm2 flutes	14,000	400	120	0.6	0.014

Engraving bit

Bit	SpeedRPM	Feedmm/min	Plungemm/min	Depthmm	Chip loadmm
Engraving bit 10°, tip 0.1 mm	16,000	130	40	0.2	0.008
Engraving bit 10°, tip 0.2 mm	16,000	130	40	0.2	0.008
Engraving bit 15°, tip 0.1 mm	16,000	130	40	0.2	0.008
Engraving bit 15°, tip 0.2 mm	16,000	130	40	0.2	0.008
Engraving bit 20°, tip 0.1 mm	16,000	130	40	0.2	0.008
Engraving bit 20°, tip 0.15 mm	16,000	130	40	0.2	0.008
Engraving bit 20°, tip 0.2 mm	16,000	130	40	0.2	0.008
Engraving bit 25°, tip 0.1 mm	16,000	130	40	0.2	0.008
Engraving bit 30°, tip 0.1 mm	16,000	130	40	0.2	0.008
Engraving bit 30°, tip 0.2 mm	16,000	130	40	0.2	0.008
Engraving bit 30°, tip 0.3 mm	16,000	130	40	0.2	0.008
Engraving bit 45°, tip 0.1 mm	16,000	130	40	0.2	0.008
Engraving bit 45°, tip 0.2 mm	16,000	130	40	0.2	0.008
Engraving bit 60°, tip 0.1 mm	16,000	130	40	0.2	0.008
Engraving bit 60°, tip 0.2 mm	16,000	130	40	0.2	0.008
Engraving bit 90°, tip 0.2 mm	16,000	130	40	0.2	0.008
Engraving bit 90°, tip 0.5 mm	16,000	130	40	0.2	0.008

PCB isolation end mill

Bit	SpeedRPM	Feedmm/min	Plungemm/min	Depthmm	Chip loadmm
PCB isolation end mill Ø 0.1 mm	20,000	160	50	0.05	0.004
PCB isolation end mill Ø 0.15 mm	20,000	160	50	0.05	0.004
PCB isolation end mill Ø 0.2 mm	20,000	160	50	0.1	0.004
PCB isolation end mill Ø 0.25 mm	20,000	160	50	0.15	0.004
PCB isolation end mill Ø 0.3 mm	20,000	160	50	0.15	0.004
PCB isolation end mill Ø 0.4 mm	20,000	160	50	0.2	0.004
PCB isolation end mill Ø 0.5 mm	20,000	160	50	0.25	0.004
PCB isolation end mill Ø 0.6 mm	20,000	190	60	0.3	0.005
PCB isolation end mill Ø 0.8 mm	20,000	260	80	0.3	0.006
PCB isolation end mill Ø 1 mm	20,000	320	100	0.3	0.008

Twist drill

Bit	SpeedRPM	Feedmm/min	Plungemm/min	Depthmm	Chip loadmm
Twist drill Ø 0.5 mm	10,000	40	40	1	–
Twist drill Ø 0.8 mm	10,000	60	60	1.5	–
Twist drill Ø 1 mm	10,000	80	80	2	–
Twist drill Ø 1.2 mm	10,000	100	100	2.5	–
Twist drill Ø 1.5 mm	10,000	120	120	3	–
Twist drill Ø 2 mm	10,000	160	160	4	–
Twist drill Ø 2.5 mm	10,000	200	200	5	–
Twist drill Ø 3 mm	10,000	240	240	6	–
Twist drill Ø 3.5 mm	10,000	280	280	7	–
Twist drill Ø 4 mm	10,000	320	320	8	–
Twist drill Ø 4.5 mm	10,000	360	360	9	–
Twist drill Ø 5 mm	10,000	400	400	10	–
Twist drill Ø 5.5 mm	10,000	440	440	11	–
Twist drill Ø 6 mm	10,000	480	480	12	–
Twist drill Ø 6.5 mm	10,000	520	520	13	–
Twist drill Ø 7 mm	10,000	560	560	14	–
Twist drill Ø 8 mm	10,000	600	600	16	–

PCB drill

Bit	SpeedRPM	Feedmm/min	Plungemm/min	Depthmm	Chip loadmm
PCB drill Ø 0.3 mm	20,000	50	50	0.5	–
PCB drill Ø 0.4 mm	20,000	60	60	1	–
PCB drill Ø 0.5 mm	20,000	80	80	1	–
PCB drill Ø 0.6 mm	20,000	100	100	1	–
PCB drill Ø 0.7 mm	20,000	110	110	1.5	–
PCB drill Ø 0.8 mm	20,000	130	130	1.5	–
PCB drill Ø 0.9 mm	20,000	140	140	2	–
PCB drill Ø 1 mm	20,000	160	160	2	–
PCB drill Ø 1.1 mm	20,000	180	180	2	–
PCB drill Ø 1.2 mm	20,000	190	190	2.5	–
PCB drill Ø 1.3 mm	20,000	210	210	2.5	–
PCB drill Ø 1.4 mm	20,000	220	220	3	–
PCB drill Ø 1.5 mm	16,000	190	190	3	–
PCB drill Ø 1.6 mm	16,000	200	200	3	–
PCB drill Ø 1.8 mm	16,000	230	230	3.5	–
PCB drill Ø 2 mm	16,000	260	260	4	–
PCB drill Ø 2.5 mm	16,000	320	320	5	–
PCB drill Ø 3 mm	16,000	380	380	6	–

What matters with Acrylic

Use cast acrylic (GS); extruded acrylic (XT) melts more easily and sticks to the cutting edge.
Choose a single-flute bit with a large gullet so the chips do not melt.
If the material melts, raise the feed rate or lower the spindle speed; compressed air cools as well.
Leave the protective film on while cutting, it keeps the surface free of scratches.

Other materials

CNC feeds and speeds → · Router bit types explained →

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