User guide

6-12 l Troubleshooting
Product Quality Problems (continued)
Symptom
Cracks at cut site.
Possible Cause
The extrudate is too cold.
The blade speed is too high.
The bushings are not providing
enough support during cutting.
The cutting blade is too sharp.
If using Nylon, it may be cooling
too quickly.
Solution
If the extrudate is too cold, it can
fracture or whiten during cutting.
Raise the extrudate's temperature.
High blade speeds can cause too
much impact. Lower the blade
speed.
Change the bushing design to make
them more supportive.
A blade that is too sharp can fracture
some materials, especially rigid
PVC and nylons. Slightly dull the
blade.
If nylon is cooled too quickly, its
molecular structure may become
unstable, leading to poor physical
properties. Try more gradual cool-
ing.