  The discovery of graphene, one of the most-studied materials in condensed
matter physics due to its singular mechanical, optical, and electronic
properties, was enabled by manual ``Scotch Tape'' exfoliation. Nearly two
decades later, this method is still widely used to obtain chemically-pristine
flakes of graphene and other 2D van der Waals materials. Unfortunately, the
yield of large, pristine flakes with uniform thickness is inconsistent. Thus,
significant time and effort are required to exfoliate and locate flakes
suitable for fabricating multilayer van der Waals heterostructures. Here, we
describe a relatively affordable tabletop device (the ''eXfoliator'') that can
reproducibly control key parameters and largely automate the exfoliation
process. In a typical exfoliation run, the eXfoliator produces 3 or more large
($\ge400\ \mu$m$^2$) high-quality monolayers, allowing new users to produce
large pristine graphene monolayers at a rate comparable to manual exfoliation
by an experienced user. We use an automated mapping system and computer vision
algorithm to locate candidate flakes.
