CNC Mill and Lab

Course Description

CNC Mill and Lab is an introductory course in computer numerical control programming for vertical milling machines, emphasising linear coordinate systems and polar coordinate systems. Students engage with machine setup, operation, part programming, and toolpath development, and have the opportunity to pursue the National Institute for Metalworking Skills (NIMS) CNC Milling: Programming, Setup & Operations Level 1 certification.

Within the SCNS taxonomy, PMT is the Precision Metals prefix, and the 0000-level number marks this as PSAV clock-hour instruction. Daytona State publishes it at 150 clock hours with a $133.25 lab fee, offered fall. ⚠ It carries no college credit.

The setup is where CNC work is actually won or lost. Programming a toolpath is a learnable and increasingly automated skill; establishing an accurate work offset, setting tool lengths correctly, holding the part rigidly, and proving out a program without crashing the machine is what employers pay for. A programmer who has never set up a machine writes programs that are awkward or impossible to run.

Learning Outcomes

Required Outcomes

• Apply CNC machine safety practice and describe its specific hazards.
• Describe CNC machine construction, axes, and control systems.
• Describe the Cartesian coordinate system as applied to milling.
• Apply absolute and incremental positioning correctly.
• Apply polar coordinate programming.
• Describe and use work coordinate systems and offsets.
• Establish a work offset accurately using an edge finder or probe.
• Set and verify tool length offsets.
• Set and apply cutter compensation.
• Write basic G-code and M-code programs.
• Program linear and circular interpolation.
• Program drilling, tapping, and boring canned cycles.
• Program contours, pockets, and profiles.
• Apply subprograms and repetition where appropriate.
• Select cutting tools and calculate speeds and feeds for CNC milling.
• Select and apply appropriate workholding for CNC.
• Load, edit, and manage programs on the control.
• Prove out a program safely using single block, dry run, and rapid override.
• Recognise and avoid conditions that cause a crash.
• Run a first part and inspect it against the drawing.
• Adjust offsets to bring a part into tolerance.
• Monitor tool wear and respond appropriately.
• Document setup sheets and program information.
• Produce a part to print and inspect it to NIMS standard.

Optional Outcomes

• Describe conversational programming.
• Describe probing and in-machine measurement.
• Describe high-speed machining strategies.
• Describe fourth-axis and indexing operations.
• Describe machine maintenance and alarm response.
• Sit the NIMS CNC Milling Level 1 credential.

Major Topics

Required Topics

• CNC safety
• CNC machine construction and axes
• Cartesian coordinates in milling
• Absolute and incremental positioning
• Polar coordinate programming
• Work coordinate systems and offsets
• Establishing work offsets
• Tool length offsets
• Cutter compensation
• G-code and M-code
• Linear and circular interpolation
• Canned cycles
• Contours, pockets, and profiles
• Subprograms
• Tool selection, speeds and feeds
• CNC workholding
• Program loading and editing
• Safe program prove-out
• Crash avoidance
• First part inspection
• Offset adjustment
• Tool wear monitoring
• Setup sheets and documentation
• Producing a part to NIMS standard

Optional Topics

• Conversational programming
• Probing and in-machine measurement
• High-speed machining
• Fourth-axis and indexing
• Machine maintenance and alarms
• NIMS CNC Milling Level 1

Resources & Tools

• The programme's shop, machines, and open lab hours — the reason to take this in person, and the single highest-return resource here. These are motor skills; hours on the machine are what build them.
• American Welding Society (aws.org) — codes, certification information, and student membership; the authority for anything in this guide about welder qualification.
• NIMS (nims-skills.org) — free credential standards and performance test specifications; read the standard before you sit the test.
• Machinery's Handbook — the machinist's reference, and worth owning even at its price; speeds, feeds, threads, tolerances, and materials.
• Welding Principles and Applications (Jeffus) — the standard welding text.
• Technology of Machine Tools (Krar) and Machine Shop Practice — the standard machining references.
• GD&T references based on ASME Y14.5 — geometric dimensioning and tolerancing is the language of engineering drawings and it is examinable.
• Manufacturer machine and control manuals — Haas, Fanuc, Mazak and others publish extensive free operator and programming documentation.
• Fusion 360 or Mastercam — Fusion 360 has free personal and educational licensing and is widely used for CAD/CAM; practise toolpaths outside lab hours.
• OSHA machine guarding and welding standards (osha.gov) — free, and directly relevant to the safety content of every course here.
• Your own measuring tools — a decent micrometer, calipers, and a dial indicator. Cheap measuring tools produce confident wrong numbers.
• A welding helmet you can actually see through — an auto-darkening helmet with a good lens is the best money a welding student spends.

Career Pathways

• Welder, cutter, solderer, or brazer — SOC 51-4121.
• Machinist — SOC 51-4041.
• Computer numerically controlled tool operator — SOC 51-9161; CNC tool programmer — SOC 51-9162, the better-paid of the two.
• Structural and construction welding — steel erection and fabrication.
• Pipe welding — process plants, utilities, and shutdown work; among the best-paid work in the trade, and 6G qualification is the gateway.
• Marine and shipyard welding and fabrication — a large Florida sector.
• Aerospace machining and welding — precision work to demanding standards, frequently with certification and clearance requirements.
• Job shop and contract machining — where most newly certified machinists start.
• Tool and die making, and mould making — a highly skilled speciality with long training and strong earnings.
• Quality inspection and metrology — CMM operation and first-article inspection; a route off the machines that uses the same knowledge.
• CNC programming and CAD/CAM — the natural progression from operating, and where the pay increases.
• Maintenance and millwright work in manufacturing, utilities, and theme parks — frequently salaried with benefits.
• Welding inspection — the AWS Certified Welding Inspector credential requires documented experience and is a well-paid career step off the tools.
• Mobile welding and self-employment — real in this trade, and a business as much as a craft.

Special Information

⚠⚠ Prove out every program — a crash is expensive and it is avoidable

• A CNC machine will drive a tool through a vice, a fixture, or itself at full rapid without hesitation if that is what the program says. It has no judgement and no self-preservation.
• Never run a new program at full rate. Single block, feed override low, rapid override low, and your hand on the feed hold — every time, on every new program.
• Dry run above the part first with the Z offset raised, and watch the whole cycle before letting a tool near the work.
• Check every offset before the first cut — work offset, tool lengths, and tool diameters. A wrong tool length offset is the most common cause of a crash, and it is entirely preventable by verification.
• Watch the first part all the way through, standing where you can reach the emergency stop and see the tool.
• Simulate where you can, but remember simulation does not know about your fixture, your clamps, or the tool you actually loaded.
• Verify what is in the tool holder matches what the program expects. Assuming is how crashes happen.
• Report crashes honestly and immediately. A machine that has crashed may have lost accuracy, and concealing it makes every subsequent part suspect.
• Keep the workholding rigid and think about clamp positions before the program runs into them.

⚠ Learn G-code even where CAM writes it for you

• CAM software generates the program, but the machinist edits it, diagnoses it, and answers for it. Being unable to read the code means being unable to fix a problem at the machine.
• Understand the common codes properly — rapid and feed moves, arcs, work offsets, tool changes, cutter compensation, and canned cycles — and what each actually commands.
• Cutter compensation is where beginners get caught. Know how it is applied and cancelled and what happens on entry and exit moves.
• Small edits at the machine are routine — adjusting a feed, changing a depth, skipping an operation — and doing them safely requires reading the code around them.
• Comment your programs and keep setup sheets. Someone else will run the job, possibly you in six months.
• Know your control. Fanuc, Haas and others differ in detail, and the differences matter when you are editing under time pressure.
• Practise on the simulator and at home — free and educational CAM licences make it possible to build real fluency outside lab hours.

⚠⚠ Rotating machinery — the rule that matters most is about what you wear

• ⚠⚠ Never wear gloves, long sleeves, a tie, jewellery, a watch, or loose hair near a rotating machine. Entanglement in a lathe is the classic fatal machining accident, and it is fast, and nothing you can do afterwards helps. Sleeves rolled and secured, hair tied back and contained, rings off.
• Eye protection every time, without exception — chips leave a machine at speed and they are hot and sharp.
• Never clear chips by hand. Machining chips are razor-sharp and frequently hot — use a brush or a hook, and never while the machine is running.
• Stop the machine before measuring, adjusting, or touching the work. Every time. There is no measurement worth taking on a spinning part.
• Remove the chuck key before starting. A chuck key left in becomes a projectile, and it is the most common serious lathe incident after entanglement.
• Secure the workpiece and the tooling properly. Work thrown from a chuck or a vice is dangerous to everyone in the shop.
• Know where the emergency stop is on every machine before you start it, and be able to reach it from where you stand.
• Keep guards in place. Removing a guard to see better is exactly the decision that precedes an injury.
• Lock out for setup, tool changes, and maintenance on powered equipment.
• Coolant causes dermatitis and the mist is a respiratory irritant — wash hands, keep it off skin, and use the mist extraction where fitted.
• Keep the floor clear and dry. Chips and coolant underfoot are a slip hazard next to a machine you do not want to fall into.
• Never leave a running machine unattended, especially a CNC on its first run of a new program.

⚠ NIMS credentials are the machining equivalent, and employers know them

• The National Institute for Metalworking Skills (NIMS) issues the industry's recognised competency credentials, and this programme is explicitly aligned to them — CNC Milling and CNC Turning: Programming, Setup & Operations Level 1 are named in the course descriptions.
• NIMS credentials require both a written examination and a performance test — you make a part to specification and it is measured. That combination is why employers value them: the credential certifies you can actually hold a tolerance, not merely describe how.
• Collect every credential the programme offers. They cost little while you are enrolled and the machines and instructors are there.
• The performance test is measured to a written specification. Practise producing parts to print, in-tolerance, on the first attempt — not producing something that looks right.
• Stack the credentials. Measurement and metrology, manual milling and turning, CNC milling and turning, and CAD/CAM together describe a complete machinist.
• Certification fees are usually separate from course fees — budget for them.
• Keep your credential records and your sample parts. A first-piece inspection report and the part it describes are genuinely persuasive at interview.

⚠ A grade of C or better is a progression gate, not a target

• Daytona State states in these course descriptions that a grade of C or better is required to continue in the programme — and in the final courses, to graduate from it.
• This is a cohort programme. Falling below the gate does not merely cost a grade; it can remove you from the sequence until the course is offered again, which may be a full year.
• Ask early what happens if you fall short — repeat policy, how many attempts are permitted, and whether financial aid covers a repeat.
• Practical skill assessments are frequently pass-or-repeat rather than graded on a percentage, and a failed weld test or setup check is exactly the kind of thing that stalls progression.
• Attendance directly affects the outcome in a clock-hour programme where the skill is built by hours on the machine.
• Ask for help before you are behind, not after. Instructors in trade programmes have far more options at week three than at week twelve.
• Use open lab time. The students who pass practical assessments first are almost always the ones putting in unscheduled hours.

⚠⚠ Budget for the laboratory fees and the tools

• Daytona State publishes a laboratory fee for every course in this programme, and in the welding sequence they are substantial — from roughly $390 to $463 per course. The machining courses run lower, roughly $76 to $190.
• PSAV programmes advertise low tuition; the fees and tools are where the real cost sits. Ask the programme for a complete cost sheet before you enrol — tuition, every course fee, tools, textbooks, certification test fees, and personal protective equipment.
• The fees cover genuinely expensive consumables — filler metal, electrodes, shielding gas, plate and pipe stock, cutting tools and inserts, and wear on machines.
• You will need your own personal protective equipment and hand tools. Get the programme's required list early and buy over time. For welding that means a good helmet, jacket, gloves, and safety boots; for machining, measuring tools you will use daily.
• Buy quality where it protects you or determines accuracy. An auto-darkening helmet with a proper shade range, and a decent micrometer and dial indicator, are worth the money; most other things are not.
• Certification test fees are usually separate — NIMS credentials and welder qualification tests both cost extra.
• Ask about workforce funding. Trade programmes frequently have funding routes degree students do not, including employer sponsorship, apprenticeship arrangements, and Florida workforce grants.

⚠⚠ This is a PSAV clock-hour course — it carries no college credit

• The leading zero in the course number is the signal. Under the Florida Statewide Course Numbering System, a 0000-level number denotes postsecondary adult vocational (PSAV) instruction, measured in clock hours rather than semester credit hours. These courses carry zero college credit.
• ⚠ A catalog may display the clock-hour figure under a heading that reads "credit hours." It is not credits. A 0000-level course showing 280 is 280 hours of instruction, not 280 semester credits.
• PSAV hours do not transfer as college credit to an associate or bachelor's degree, and they do not satisfy general education requirements.
• What they produce is a workforce credential — a career certificate plus, in this programme, industry certifications employers ask for by name. For a skilled trade that is frequently exactly the right outcome, reached far faster and more cheaply than a degree.
• Some institutions offer articulation from a PSAV certificate into a related associate degree. ⚠ These are institution-specific and they change. If you intend to continue to a degree, get the articulation in writing from the receiving institution before you enrol.
• Financial aid rules differ for clock-hour programmes — ask the financial aid office specifically about clock-hour programmes.
• Attendance is the currency. Clock-hour programmes track attendance directly and missed hours generally must be made up.

Why metalworking is durable employment in Florida

• Shipbuilding and marine repair — Jacksonville, Tampa, and Port Everglades all support substantial marine fabrication and repair, and marine welding is skilled, well-paid work.
• Aerospace and space — the Space Coast and the wider aerospace supply chain need precision machining and certified welding, frequently to demanding standards.
• Defence contracting across Florida, ⚠ much of which requires U.S. citizenship and sometimes a security clearance.
• Construction and structural steel — sustained Florida construction activity plus storm repair.
• Manufacturing and job shops — general machining work for local industry, and the sector most likely to hire a newly certified machinist.
• Power generation, utilities, and process plants — pipe welding and maintenance, and among the best-paid work in the trade.
• Theme park and attraction fabrication and maintenance — a distinctively Central Florida employer with year-round demand.
• Mobile and rig welding — higher earnings for those who invest in a truck and equipment, though it is a business as much as a trade.
• The workforce is ageing and replacement demand is real — skilled welders and machinists are genuinely scarce, and employers say so.
• Travel and shutdown work pays a substantial premium for those willing to take it.

PMT0251C is 150 clock hours with a $133.25 lab fee, offered fall. ⚠ Clock hours carry no college credit, and a C or better is required to continue.

It is a prerequisite for PMT0228C and PMT0265C, and pairs with PMT0720C (CNC Lathe and Lab). Sit the NIMS CNC Milling Level 1 credential while you are enrolled.