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All recipes from personal experience and tested
==
{| class="wikitable" style="margin: auto; text-align: center;"
|+Tool Speeds (m/min)
|-
! scope="col"| Material
! scope="col"| HSS
! scope="col"| Cobalt
! scope="col"| Carbide
|-
! scope="row"| Plastic
| 15
| 15
| Not recommended
|-
! scope="row"| Aluminium
| 100
| 150
| 300
|-
! scope="row"| Brass
| 75
| 125
| 200
|-
! scope="row"| Steel
| 25
| 35
| 65
|-
! scope="row"| Stainless Steel
| 20
| 25
| 40
|-
! scope="row"| Titanium alloys
| Not recommended
| Not recommended
| 15
|-
! scope="row"| Tool Steels
| Not recommended
| 10
| 30
|}
'''NOTE : THESE ARE APPROXIMATE RECOMMENDATIONS - YOU WILL NEED TO RESEARCH ELSEWHERE AND GET EXPERIENCE IN ORDER TO PICK SPEEDS PROPERLY - IF THE TOOL MANUFACTURER'S RECOMMENDATIONS DIFFER FROM THIS TABLE, USE THE MANUFACTURER'S FIGURES INSTEAD'''
== Key ==
{| class="wikitable"
! Colour !! Meaning
|- style="background-color:#ccccff;"
| Blue || Not (proven) a maximum, could do more
|- style="background-color:#ccffcc;"
| Green || A demonstrated maximum, any more will break tools
|- style="background-color:#ffcccc;"
| Red || Known to be excessive, will break tools
|}
== Aluminium ==
===Roughing===
{| class="wikitable"
! Tool Size || Tool Typetype !! Material !! Coating !!
Surface speed
(RPM)
! DOC !! WOC !!
FTP
(feed rate)
! Comment
|- style="background-color:#ccffcc;"
|12mm || 4-flute flat end mill || HSS || Uncoated || 100m/min || 10mm || 4mm ||
0.03
(250mm/min)
||Noisy and spindle only just copes, definitely a maximum, use conventional milling only. Limited by spindle power, not tool endurance
|- style="background-color:#ccccff;"
|5mm || 4-flute flat end mill|| HSS|| Uncoated ||
40m/min
(2500rpm)
|| 5mm || 1.5mm ||
0.02
(200mm/min)
|| Good finish, not a maximum could have done more
|- style="background-color:#ccccff;"
|3mm || 4-flute flat end mill|| HSS|| Uncoated ||
28m/min
(3000rpm)
|| 1.5 mm || 1.4mm ||
0.0075
(90mm/min)
|| Good finish, not a maximum could have done more
|- style="background-color:#ccffcc;"
|2mm || 2-flute ball nose end mill || HSS || TiAlN coated ||
19m/min
(3000rpm)
|| 1mm || 0.5mm ||
0.02
(120mm/min)
|| Works OK, 150mm/min is too much
|}
== Brass ==
===Roughing===
{| class="wikitable"
! Tool Size/type !! Material !! Coating !!
Surface speed
(RPM)
! DOC !! WOC !!
FTP
(feed rate)
! Comment
|- style="background-color:#ccccff;"
|4mm 2-flute flat end mill || HSS || Uncoated ||
38m/min
(3000rpm)
|| 1 mm || 1.8mm ||
0.025
(150mm/min)
||Nice surface finish, almost certainly could do more depth
|}
===Finishing===
{| class="wikitable"
! Tool Size/type !! Material !! Coating !!
Surface speed
(RPM)
! DOC !! WOC !!
FTP
(feed rate)
! Comment
|- style="background-color:#ffcccc;"
|1mm 3-flute flat end mill || Carbide || TiAlN coated ||
9m/min
(3000rpm)
|| 1.2 mm || 0.95mm ||
0.0022
(20mm/min)
||Too much WOC, breaks cutters
|- style="background-color:#ccccff;"
|2mm 4-flute flat end mill || HSS || Uncoated ||
19m/min
(3000rpm)
|| 3 mm || 0.8mm ||
0.01
(120mm/min)
||Nice surface finish, might be able to go a little faster but was making noise
|}
=== Engraving ===
{| class="wikitable"
! Tool Size/type !! Material !! Coating !!
Surface speed
(RPM)
! DOC !! WOC !!
FTP
(feed rate)
! Comment
|- style="background-color:#ffcccc;"
|60 degree 0.3mm tip engraver 1/8" shank || solid carbide || TiAlN coated ||
25m/min (calculated)
(2500rpm)
|| N/A || 0.6mm ||
0.02
(50mm/min)
||Cutter sometimes breaks, probably should try higher rpm
|- style="background-color:#ccccff;"
|90 degree 0.3mm tip engraver 1/8" shank || solid carbide || TiAlN coated ||
30m/min (calculated)
(3000rpm)
|| 0.25 || 0.5mm ||
0.01
(30mm/min)
||Seems to work, could maybe do deeper or faster?
|}
===Slotting===
{| class="wikitable"
! Tool Size || Tool type !! Material !! Coating !!
Surface speed
(RPM)
! DOC !!
FTP
(feed rate)
! Comment
|- style="background-color:#ccffcc;"
|4mm || 4-flute flat end mill || HSS || Uncoated ||
31m/min
(2500rpm)
|| 1mm ||
0.015
(150mm/min)
|| Using ramp profile, might be able to do more but surface finish is not good
|- style="background-color:#ffcccc;"
|2mm || 4-flute flat end mill || HSS || Uncoated ||
19m/min
(3000rpm)
|| 1.5mm ||
0.01
(120mm/min)
|| Snapped tool
|- style="background-color:#ffcccc;"
|2mm || 3-flute flat end mill || Solid carbide || Uncoated ||
19m/min
(3000rpm)
|| 1.5mm ||
0.015
(90mm/min)
|| Snapped tool
|- style="background-color:#ccccff;"
| 2mm || 2-flute flat end mill || HSS || Uncoated ||
19m/min
(3000rpm)
|| 1.0mm ||
0.008
(50mm/min)
|| So far so good, working up the feed rate
|- style="background-color:#ccccff;"
|3mm || 4-flute flat end mill || HSS || Uncoated ||
28m/min
(3000rpm)
|| 1.5mm ||
0.005
(60mm/min)
|| FTP could be higher
|}
== Low-Carbon (Mild) Steel ==
=== Roughing ===
{| class="wikitable"
! Tool Size || Tool type !! Material !! Coating !!
Surface speed
(RPM)
! DOC !! WOC !!
FTP
(feed rate)
! Comment
|- style="background-color:#ccccff;"
|4mm || 4-flute flat end mill || HSS || Uncoated ||
20m/min
(1600rpm)
|| 5mm || 1.8mm ||
0.02mm
(130mm/min)
|| Cut very well, probably can do more
|}
=== Drilling ===
{| class="wikitable"
! Tool Size/type !! Material !! Coating !!
Surface speed
(RPM)
!
FTP
(feed rate)
! Comment
|- style="background-color:#ccccff;"
|4 mm 2-flute jobber drill|| Cobalt Steel || TiN ||
20m/min
(1600rpm)
||
0.04mm
(63mm/min)
|| Cut well, used pecking profile, probably could have done more feed
|}
== "Special" materials ==
=== H-13 Tool Steel ===
====Roughing====
{| class="wikitable"
! Tool Size/type !! Material !! Coating !!
Surface speed
(RPM)
! DOC !! WOC !!
FTP
(feed rate)
! Comment
|- style="background-color:#ccccff;"
|6mm 4-flute flat end mill || solid carbide || TiAlN coated || 35m/min || 7mm || 0.5mm ||
0.04mm
||Width is at maximum, depth might be deeper
|- style="background-color:#ccccff;"
| 1mm 3-flute flat end mill || Solid Carbide || TiAlN coated ||
9.4m/min
(3000rpm)
|| 0.5mm || 0.5mm ||
0.0022mm
(20mm/min)
|| Might handle more but only one test was made
|}
====Finishing====
{| class="wikitable"
! Tool Size/type !! Material !! Coating !!
Surface speed
(RPM)
! DOC !! WOC !!
FTP
(feed rate)
! Comment
|- style="background-color:#ffcccc;"
|20 degree 0.3mm tip engraver 1/8" shank || solid carbide || TiAlN coated ||
30m/min (calculated)
(3000rpm)
|| 0.5 mm || 0.15mm ||
0.0026
(8mm/min)
||Too much, breaks the tip off
|}
====Drilling====
{| class="wikitable"
! Tool Size/type !! Material !! Coating !!
Surface speed
(RPM)
!
FTP
(feed rate)
! Comment
|- style="background-color:#ccffcc;"
|6mm 2-flute jobber drill|| HSS || TiN ||
14m/min
(730rpm)
||
0.02mm
(15mm/min)
|| Was in danger of stalling spindle, definitely the maximum size that can be drilled in this material
|}
| |||