Use Machine-Grade ABS
Machine-grade ABS is specifically formulated for CNC machining and subtractive processes. With fewer impurities and uniform structure, it provides:

• Cleaner machining with reduced risk of burning

• Improved dimensional precision

• Enhanced surface finish on final parts

Use Proper Cutting Tools
For best machining outcomes, sharp carbide tools are recommended when working with ABS. Unlike high-speed steel, carbide maintains sharpness longer and performs better because:

• Dull tools may cause chipping or localized melting

• Sharp edges minimize surface flaws

• Carbide tools allow for faster speeds without compromising quality

Adjust Cutting Parameters
Machining ABS requires different settings than metals or harder plastics due to its soft nature:

• Lower spindle speeds help avoid excessive heat that could melt ABS

• Higher feed rates promote quick chip evacuation and reduce dwell time
  These settings keep cutting temperatures controlled while maintaining surface quality.

Use the Right Coolant
ABS doesn’t demand intense cooling, but using a water-soluble coolant or compressed air can:

• Help dissipate heat

• Prevent the material from softening or melting

• Clear chips efficiently from the tool path

Anneal ABS Plastic
Due to internal stresses, ABS should be annealed before machining. Annealing gently heats the plastic to relieve stress, which is especially beneficial when:

• The part design includes complex features

• The final application involves thermal or mechanical loads
  This process lowers the risk of warping or cracking, ensuring more reliable and stable parts.