A fluid jet apparatus for possible glass polishing application was constructed. The apparatus is capable of producing abrasive jets with a velocity of approximately 40 meters per second and has been used to test the effects of an abrasive slurry on a flat, glass surface. The slurry's exit velocity is controllable by changing the nozzle diameter. After testing multiple samples at each of three velocities used, each sample was analyzed and depth profiles were taken. From these profiles, characteristics such as maximum depth and diameter were used to calculate the material removal rate. Using these results, the effects of the differing velocities were compared. A strong increase in material removal rate with the average velocity was found. Analysis of the depth profiles showed that at the lowest velocity tested (27 m/s) the glass appeared to be deformed rather than removed. Much clearer fluid jet spots were produced at higher velocities. As expected, the highest velocity used in this test (produced by an 18 gage nozzle) removed the most material and yielded the clearest depth profiles, but also suffered from trouble with particle agglomeration due to the nozzle's small diameter
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