strain; strained; strainer; straining at the leash; All ENGLISH synonyms that begin with 'S'
Anything interfering with the strength of the compressive stress waves (7) during operation such as. blank-firing (free-running) or prying with the tool, can lower breaker performance and cause tool. fatigue. The breaker must be at a 90Â° angle to the face of the rock. (D)Blank-firing. Blank-firing the breaker without the tool pressing on a rock causes the energy that normally travels. out the tool into the rock (8), to impact the retainer pins (9) and front head causing excess stress to. these components.
Some Rocks to Avoid. A few types of igneous and metamorphic rocks are not good choices for the rock tumbler. These include: 1  schist, gneiss and other rocks that contain significant amounts of mica. ( 2 micaceous rocks often split apart, shedding grains that spoil a polish). 3  rocks that are made up of easily dislodged grains.