Flat welds require the least operator skill, and can be done with electrodes that melt quickly but solidify slowly.

The main drawback is the high labor cost associated with the method as well as the operator skill required to obtain quality brazed joints.

Controls in older systems contain a large number of individual motor control buttons, with efficient operation requiring a high degree of operator skill and experience.

The process can be applied in inaccessible areas, with poor visibility, and with less operator skill.

The importance of operator skill cannot be overstated.

Plus it takes greater operator skill to lock target sensors on to the proper coordinates, especially at orbital distances.

These parameters highly depend on operator skill.

Automated spark testing has been developed to remove the reliance upon operator skill and experience, thereby increasing reliability.

Dental implant success is related to operator skill, quality and quantity of the bone available at the site, and the patient's oral hygiene.

Mid forceps can occasionally be indicated but require operator skill and caution.