Buffalo Taper Spindle (Chuck) for Lathe · Brass · Left side mount

• Lathes — Spins the wheels, cones and buffs used for polishing; the CDC lists lathes among the items to be cleaned and disinfected between patients.
• Lab Vibrators — Shakes the mix into the impression after it has been mixed.
• Mixing Equipment — Blends powder and water, under vacuum, before the mix is poured.
• Electro-Polishing Equipment — Brightens metal by removing a thin layer electrolytically, where a lathe polishes by friction.
• Casting Units — Fills a mould with molten material, where the other machines here shape or finish a solid one.

The shelf also holds model trimmers; no source on our allowed list describes them, so this guide does not.

Air in the mix: the strength, hardness and abrasion resistance of a gypsum cast are affected by the number and size of the voids in it.

Surface after polishing: studies cited in the denture literature put the acceptable roughness of a hard surface in the mouth at no more than 0.2 micrometres.

The CDC reports that dental laboratory technicians can breathe in crystalline silica dust when mixing powders, removing castings from moulds, grinding and polishing castings and porcelain, and blasting with silica sand.

Cleaning between cases: the CDC notes that pressure pots and water baths are particularly susceptible to contamination and should be cleaned and disinfected between patients.