You're getting ready to work on CNC parts, and you've found two very different tools with very different price tags: a complete vertical machining center and a compact 3D trigger edge finder. One is a machine that can make thousands of parts once it's healthy. The other is a precision setup tool that helps you locate work on a machine you already run. The real question is what your shop needs right now.
Quick verdict
If you need a full CNC vertical milling machine and have the space, power, and willingness to deal with known service issues, the MORI SEIKI CNC MILL - VERTICAL MACHINING CENTER MV-JUNIOR / MV JR is the machine-level buy. If you already have a working CNC machining center and want accurate, repeatable edge finding for setup, the USA】3D Trigger Edge Finder to Find CNC Machining Center Three-Coordinate CF-38 is the low-cost precision pick.
At a glance
| Detail | MORI SEIKI MV-Junior | RATTM MOTOR CF-38 |
|---|---|---|
| Price | USD 3,500.00 | USD 102.60 |
| Condition | Used | New |
| Role | Complete vertical machining center | 3D trigger edge finder for setup |
Where each product wins
Choose the MORI SEIKI MV-Junior if you're outfitting a shop and need an actual milling machine. It brings a 10 hp spindle, a 35" x 16" table, X/Y/Z travels of 22" x 16" x 18", a 20-tool side mount changer, and a Fanuc controller. It's a full VMC that can produce parts once its known issues are addressed.
Choose the RATTM MOTOR CF-38 if you're adding precision to an existing CNC setup. It probes in ±X, ±Y, and +Z, has a safety stroke, and is rated for repeatability of 0.005 or better with up to 3 million trigger cycles. It won't replace a machine, but it makes setup far more accurate.
MORI SEIKI CNC MILL - VERTICAL MACHINING CENTER MV-JUNIOR / MV JR
This is a used 1991 vertical milling machine with a 35" x 16" table and travels of 22" x 16" x 18". It runs on 3-phase 220V power, spins an 8k spindle with a CAT 40 taper, and carries 20 tools in a side mount changer with a Fanuc controller. The reason to choose it is that you get a complete vertical machining center, not just an accessory. The limitation is that it has known issues: it needs a Y-axis limit switch, has an oil leak near the lube pump, and the tool changer arm occasionally hangs. It has been used since 2009 and made thousands of parts, but it's sold as-is with no warranty and the buyer is responsible for loading.
USA】3D Trigger Edge Finder to Find CNC Machining Center Three-Coordinate CF-38
The CF-38 from RATTM MOTOR is a new 3D trigger edge finder designed for locating workpieces on a CNC machining center. It probes in ±X, ±Y, and +Z directions, has a safety stroke of 20 degrees in the X/Y plane and +2.5mm in Z, and is rated for repeatability of 0.005 or better with a trigger life up to 3 million cycles. It uses a tungsten steel probe and ruby tip. What makes it worth picking up is the precision: you get repeatable edge finding for a low-cost addition to your tooling. The limitation is that it's not a stand-alone machine, and the required CR1632 3V button battery is not included in the package, so you'll need to supply that before using it.
Final choice by use case
For a shop that needs an actual milling machine and can handle maintenance and rigging, the MORI SEIKI MV-Junior is the centerpiece. For a shop with a working CNC machining center that needs accurate edge finding and probing, the RATTM MOTOR CF-38 is the practical addition. If you're buying for a new setup and don't yet have a machine, the CF-38 alone won't get you cutting metal; the mill is the investment that makes parts.
