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LittleMachineShop.com is the premier source of tooling, 
parts, and accessories for bench top machinists.  
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Have you seen?
Sensitive Drill Feed and 1/8" (3 mm) Keyless Drill Chuck
 
 
Most Popular of
QCTP Sets
Quick Change Tool Post Set, 0XA, Horizontal Cut-Off, Mini Lathe
Quick Change Tool Post Set, 0XA, Horizontal Cut-Off, Mini Lathe
Additional popular items
 

Machinist's Calculator

Our mobile app; read this with your phone.
lmscnc.com/calc

 
Onliine Metals  

 

  

Rake and Relief Angles

These rake and relief angles are for high speed steel lathe tool bits.

Toolbit angles

 

Material Side Relief Front Relief Side Rake Back Rake
Aluminum 12 8 15 35
Brass 10 8 5 to -4 0
Bronze 10 8 5 to -4 0
Cast iron 10 8 12 5
Copper 12 10 20 16
Machine Steel 10 to 12 8 12 to 18 8 to 15
Tool Steel 10 8 12 8
Stainless Steel 10 8 15 to 20 8

 

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Phone: (800) 981-9663