Possible reason 1. The drilling temperature is too high 2. The drill bit is too worn or the cutting edge is chipped 3. Inappropriate residue removal process Solution 1. Increase the feed speed and reduce the cutting speed 2. Check th

Possible reason 1. The drill bit is too worn or the cutting edge is chipped 2. The feed/retract speed is too high 3. The material of the aluminum cover/wood backing board is too soft 4. Insufficient pressure on the pressure foot Solutio

Possible reason 1. The feed speed/retract speed is too high or too low 2. Cutting parameter error 3. The drill bit is too worn or the cutting edge is chipped 4. Excessive drilling temperature Solution 1. Improve tool speed/retract sp