According to different cutting material, cutting the tip of the extended length is slightly different, should not extend cutting tool holder (turret) is too long, normal to within half a millimeter of the better (except for special thin material), with cutting machine pressure conditions (different materials can call a different set of parameters to avoid frequent adjustment), prolonged use of the cutter, the latter may be considered appropriate to increase the pressure or elongate tip to extend the cutter's use of time and cost savings.

Appropriate response to a fine pattern extends longer, to use new cutter and slow speed, precision engraved big picture or pattern is not so high you can put your request. Avoid cutting knife at any time giving demanding effective protection cutter.
When the cut-out pattern with horn or flash the occurrence of the phenomenon, first check whether blunt knife needs to be replaced, without question, try a drop of oil and a knife inserted in the knife block and turn several times to lubricate the bearing (regular maintenance can increase service life while protecting cutter), if still not be resolved, then consider replacing the knife.
Try not to use inexpensive cottage turret, the turret is not only lack of precision, and often without top miniature bearings or bearing bad ineffective but also easy to collapse circle, using a cutting blade rotation is not working, tip offset, resulting in cutting & grinding discs corners allowed, no closed circular, linear patterns of waves on many other issues.