CNC Machining · Miami Gardens, Florida

CNC Machining Services

Milling, drilling, tapping and boring on a Mazak CNC machining center, in the same building that cuts, forms and welds your part. Machined features go onto laser-cut plate, formed parts and weldments without the part leaving our quality system.

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Mazak CNC Machining Center|Milling · Drilling · Tapping · Boring|Machined Weldments|AS9100 Rev D · ISO 9001:2015|ITAR Registered

Overview

Machining Inside a Fabrication Shop

Many fabricated parts need a few features that cutting and bending cannot hold: a bored hole on a weldment, a milled pocket in a plate, a counterbore, a tight positional tolerance between two faces, threads in thick material. Sending those parts to an outside machine shop adds a vendor, a truck and a week.

At MJM the machining department sits beside our lasers, press brakes and welding department. A plate is laser cut, machined, formed or welded, and inspected under one AS9100 Rev D and ISO 9001:2015 quality system and one purchase order.

Equipment

Machining Equipment

Equipment	Capability
Mazak BCN 530C CNC machining center	Milling, drilling, tapping and boring of precision metal components. Standard tolerance ±0.005 in., to ±0.001 in. on critical features.
Engine lathe	Turning, facing, threading and boring of cylindrical components.
Surface grinder	10 x 18 in. capacity for flat surfaces and tight thickness tolerances.
FlexArm tapping machine	Fast, square tapped holes up to 3/8 in. thread.
Heavy-duty hydraulic tapping arm	Large threads up to about 1 in. diameter in steel, stainless, aluminum and galvanized material.
Amada HFA 250W band saw	Cutting bar stock and structural sections to length.
Johnson 95-ton stamping press	Stamped and formed features in production quantities.

Full list on the equipment page. A larger machining department is planned as part of the two-story addition now under construction. See the shop tour.

Work We Do

Typical Machining Work

Machined Plate

Laser-cut blanks finished with pockets, counterbores, countersinks, reamed holes and milled edges.

Machined Weldments

Mounting faces, bores and hole patterns machined after welding so they are true to each other.

Tapped Holes

Machine tapping from small threads in sheet to large threads in plate, including blind holes in stainless.

Secondary Operations

Countersinking, deburring, chamfering and slotting on formed parts.

Small Turned Parts

Spacers, pins and bushings that go into our assemblies.

Fixtures and Tooling

Weld fixtures, inspection fixtures and locating tooling, supported by three 3D printers for jigs and prototypes.

Materials

Materials We Machine

Carbon steel plate, 304 and 316 stainless steel, 5052 and 6061 aluminum, copper, brass and engineering plastics such as Delrin and G-10. All material is US-sourced with mill certifications. See materials.

Machined parts are inspected with a Keyence XM-5000 portable CMM and Keyence LM-X optical measurement, with first article reports per AS9102 when required.

Straight Talk

Where MJM Is Not the Right Fit

We are a fabrication shop with machining, not a production machine shop. If your part is a complex 5-axis component, a high-volume turned part, or something machined entirely from billet with no cutting, forming or welding, a dedicated machine shop will serve you better and we will tell you so.

We are the right choice when machining is one step in a fabricated part or assembly, and you want it made in one place.

FAQ

CNC Machining Questions

Does MJM Manufacturing offer CNC machining?

Yes. MJM machines on a Mazak BCN 530C CNC machining center and supports it with a lathe, surface grinder, tapping machines and a band saw, at its Miami Gardens, Florida facility.

What machining tolerances does MJM hold?

Standard machining tolerance is ±0.005 in., with ±0.001 in. achievable on critical features on the Mazak machining center.

Can MJM machine a part after it is welded?

Yes. Weldments are machined after welding so that mounting faces, bores and hole patterns are true to each other, then inspected by CMM.

Is MJM a machine shop?

MJM is a precision sheet metal and metal fabrication shop with in-house machining. It is the right fit when machining is part of a fabricated part or assembly, and not for high-volume or 5-axis machined components.

What materials does MJM machine?

Carbon steel, stainless steel, aluminum, copper, brass and engineering plastics such as Delrin and G-10.

How large a thread can MJM tap?

MJM taps up to 3/8 in. threads on a FlexArm tapping machine and up to about 1 in. diameter on a heavy-duty hydraulic tapping arm.

Custom Metal Fabrication: the full shop under one roof.
Welding Services: fiber laser, TIG, MIG and spot welding to AWS D17.1, D1.1, D1.2 and D9.1M.
Laser Cutting Services: five Amada lasers, mild steel to 1 in., stainless and aluminum to 5/8 in.
Fabrication Tolerances: what we hold by process and thickness.
Aluminum Fabrication: 5052 and 6061 cut, formed, welded and finished.
Stainless Steel Fabrication: 304 and 316 cut, formed, welded and finished.
Equipment and Machinery: the full machine list.

Send Us Your Drawings

STEP files and PDF drawings to sales@mjmmfg.com or (305) 620-2020. Quotes in 24 to 48 hours.

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Ronald Travieso

Working with MJM Manufacturing has been one of the best vendor experiences I've had. The parts matched my samples perfectly, and even the packing was done with real care — clean, organized, and professional. Of all the vendors I've worked with, they're by far the most organized and quality-focused. Great communication from start to finish. Highly recommend them for custom fabrication work.

Robert Cooler

MJM is wonderful to deal with. They have worked diligently and have produced my projects thus far to the highest standards.

Israel Schechter

I have been ordering parts from MJM Manufacturing for many years, and they have consistently exceeded my expectations. Their quality, professionalism, and attention to detail are outstanding. Every order is handled efficiently, delivered on time, and manufactured to the highest standards. The team at MJM is knowledgeable, responsive, and always willing to go the extra mile to ensure customer satisfaction. It is rare to find a company that maintains such a high level of consistency over many years. I highly recommend MJM Manufacturing to anyone looking for a reliable partner for complex, precision sheet metal parts and assemblies. I. Schechter, Former President of GBI Intralogistics Solutions, Current Owner/President of IPSTEC, Aventura, Florida

Richard Havass

As a customer, I have been working with MJM Manufacturing for approximately 35 years. The expertise of Mike Mijares and his team at MJM is top notch. Whenever I have a new part design, I typically review the design of the part with MJM to ensure that I am using the most cost-efficient manufacturing process to produce the parts as economically as possible. There was a part that we had made years ago using a progressive die to emboss a curved channel into a sheet metal part. The cost of the progressive die for this part was $55K. The redesign of the part from MJM consisted of $1200 in tooling to make the new part profile. Parts came out great and saved tens of thousands in tooling. Lastly, whether MJM produces a prototype or a production run, the appearance of the part is pristine, no tool marks or scratches on any part. In the 35 years that I have worked with Mike and his team, I have found them to be one big family. Mike’s love for his business is refreshing! You rarely see a person that is so charged to get up for work every day! Richard Havass Mechanical Engineering Manager JCI-Sensormatic

Sulen Ojeda Fuentes

Esta fábrica está llena de muy buenos profesionales son una gran familia trabajadores de años con muy buena experiencia .lo recomiendo porque son un gran equipo. Y realizan muy buen trabajo.