• Heading 6
  • Monitor your spindle load when running a high feed rate 
  • Running your spindle load too high may result in a damaged spindle
  • Always start with your feed at 50% or below
  • Gradually bring the feed rate up while monitoring chatter and spindle load
  • With HSS drills always use a peck drill cycle
  • Make your peck depths a maximum of half your drill diameter 
  • Example: 0.250 in drill diameter pecking at 0.125 depths
  • For extra long drills reduce speeds and feeds by 30%-50%

Plastic

Carbide Endmills 

Endmill Diameter (inches)

Surface Speed (SFM)

Feed Per Tooth (IPT)

1/8"
1/4"
1/2"
5/8"
3/4"
1"
300-375 SFM
300-375 SFM
300-375 SFM
300-375 SFM
300-375 SFM
300-375 SFM
0.0009
0.0018
0.0035
0.0045
0.0055
0.007

Plastic

High Speed Steel Drills (HSS)

Tool Diameter (inches)
Surface Speed (SFM)
Cutting Feed (IPR)
0-1/8"
1/8-1/4"
1/4-1/2"
1/2-3/4"
3/4-1"
175 SFM
175 SFM
175 SFM
175 SFM
175 SFM
0.001-0.002
0.002-0.003
0.003-0.006
0.006-0.007
0.007-0.008
  • Always feed in and feed out when reaming
  • Always use the correct drill size when drilling the hole before you ream it. 
  • Click Here to find the right drill size for you reamer 
  • Reduce speed and feed by 30% when reamed hole size comes out too big
  • With Carbide drills always check the manufacturers recomendation on what drilling cycle you should run.
  • For extra long drills reduce speeds and feeds by 30%-50%

Plastic

Carbide drills

Tool Diameter
(inches)
Surface Speed
(SFM)

0-1/8"

175 SFM
0.004
1/8-1/4"
0.004-0.006
175 SFM
1/4-1/2"
0.006-0.009
175 SFM

175 SFM

3/4-1"
3/4-1"

175 SFM

0.014-0.016

Plastic

High Speed Steel Reamers

Tool Diameter
(inches)
Surface Speed
(SFM)
100-250 SFM
0.001-0.004
100-250 SFM
0-1/8"
1/8-1/4"
100-250 SFM
1/4-1/2"
100-250 SFM
1/2-3/4"
100-250 SFM
3/4-1"
Cutting Feed
(IPR)
0.004-0.005
0.005-0.009
0.008-0.012
0.012-0.016
Cutting Feed 
(IPR)
0.009-.014