Industry leaders in lapping
machine & polishing machine
products committed to silicon carbide
Single-sided and Double-sided Planetary Lapping and Polishing Machines
PR Hoffman’s role in the lapping and polishing industry began in Carlisle, PA in 1938, with the invention of the Hunt-Hoffman planetary lap machine by Grover C. Hunt and Philip Reynold Hoffman. The double-sided planetary lap machine revolutionized the quartz crystal industry, and the concept remains unmatched for consistent, reliable processing of parts requiring tight control of thickness, flatness, parallelism, and surface finish.
Custom designs for
A world leader in the design and
construction of polishing fixtures
Templates and CXTS
PR Hoffman custom manufactures waxless mount assemblies for any single-side process such as Silicon wafers, Silicon Carbide (SiC) wafers, compound substrate wafers, glass wafers, ceramics, along with virtually any flat and parallel part that requires a polished surface.