Spindle Taper Types Explained: BT vs CAT vs ISO vs HSK
BT, CAT, ISO (SK) and HSK spindle tapers explained in plain terms: how they differ, where each is used, and why taper type matters for tooling compatibility when buying a used machining center.
VMC vs HMC: Which One Fits Your Shop Floor
Vertical and horizontal machining centers cut the same metal but suit very different shop floors. A practical guide to spindle orientation, pallet changers, setups and floor space — plus the questions to ask before you choose.
How to Read a Used Machine Listing — Which Specs Actually Matter
Used machine listings are full of numbers, but only a handful actually predict whether a machine will fit your shop. A practical guide to the specs that matter, the ones buyers over-index on, the red flags in a weak listing, and how to cross-reference specs against your own parts.
How to Inspect a Used Drill Machine Before Buying: A Practical Buyer's Guide
A practical guide to buying a used drilling machine: the key specs to check, a spindle-and-alignment inspection checklist, the right questions to ask a seller, and how Machine City sources and inspects used drills.
How to Inspect a Used Milling Machine Before Buying: A Practical Buyer's Guide
A practical buyer's guide to used milling machines — key specs to check, a spindle, way, and backlash inspection checklist, the questions to ask a seller, and how Machine City sources and inspects every machine.
How to Inspect a Used Lathe Before Buying: A Practical Buyer's Guide
A practical buyer's guide to used conventional lathes — the specs that matter, a hands-on inspection checklist, the questions to ask a seller, and how Machine City helps you buy proven iron with confidence.
How to Inspect a Used CNC Turning Center Before Buying: A Practical Buyer's Guide
A practical, no-nonsense checklist for buying a used CNC turning center — the specs that matter, the inspection points that reveal real wear, and the questions to ask before you commit.
How to Inspect a Used Surface Grinder Before Buying: A Practical Buyer's Guide
A practical guide for shop owners and production managers evaluating a used surface grinder — the key specs to check, a condition and inspection checklist, the questions to ask a seller, and how Machine City sources and inspects imported machines.
How to Inspect a Used VTL Before Buying: A Practical Buyer's Guide
A practical guide to buying a used Vertical Turret Lathe: the key specs to check, a VTL-specific inspection checklist, the questions to ask the seller, and how Machine City sources and inspects imported VTLs.
How to Inspect a Used VMC Before Buying: A Practical Buyer's Guide
An 8-minute buyer's guide covering paperwork, spindle inspection, ways and ball screws, controller checks, and test cuts. Everything Machine City checks before buying a VMC ourselves.