CNC lathe in Brass C360

When to choose CNC Turning

• Parts of revolution: shafts, spacers, collars, and threaded fasteners from bar or tube
• Tight concentricity between OD and ID that is awkward to hold across mill setups
• Groove, face, and thread features that a single chucking can finish end-to-end
• Bar-fed production where cycle time favors lathe magazines over vise milling
• When L/D is manageable with tailstock support and milling content is minimal

Setup and fixturing

• Collet or soft-jaw chuck bored to the blank diameter for round aluminum without crush marks
• Tailstock live center or steady rest once stick-out approaches ~3–4× diameter
• Bar puller / feeder for repeating blanks; part-off with adequate face stock for the next piece
• Coolant aimed at the tool nose — aluminum turning loves flood to prevent built-up edge
• For thin-wall tubes: plug mandrels or reduced jaw force plus finish passes after roughing

Typical operations

• Facing and rough OD turning to clear bar scale and establish diameter stock
• Finish OD/ID passes with sharp inserts for size and surface finish
• Grooving and parting with dedicated groove tools and correct width relief
• Single-point or tap threading on OD/ID; verify major/pitch diameter on first article
• Live-tool cross-drilling or milling flats when mill-turn is available (else second op)

DFM watch-outs

• Long slender bars chatter without tailstock — shorten blank or add support
• Thin tubular walls ovalize under chuck pressure; use soft jaws and light finishes
• Unrelieved grooves and sharp internal shoulders need special tooling or redesign
• Sharp internal corners at OD steps may need a radius insert or secondary mill
• Part-off leaves a pip — plan a face cleanup or design a chamfer into the parting side
• Cross-holes and wrench flats imply live tooling or a follow-on mill setup after turning

Capability

On a CNC lathe the spindle spins the stock while tools on the turret plunge, traverse, and groove. Concentric diameters, tapers, and threads share one rotational datum, which is why turned parts hold roundness and runout more naturally than the same features milled from hex bar. Programming centers on tool nose radius compensation, feed per revolution, and safe retracts past shoulders. Live tooling expands the cell into mill-turn territory for flats and radial holes without leaving the chuck, but pure turning remains fastest for OD/ID-only drawings.

Lathe hourly and setup in rates sit below 3-axis milling for this shop card — again, that is capability metadata. Public hub mid bands for identical SAMPLE_GEOM materials stay aligned with other CNC process hubs until the quote engine applies lathe variants. Differentiate turning hubs with revolved DFM language, L/D stick-out guidance, and chucking notes rather than invented dollar deltas on the shared price table.

Rates record lathe spindle time at 22/h with setup 20. Quote cards may show these rates as process capability. Shared Al6061 hub mids with 3-axis/5-axis are expected today — do not fabricate a turning discount in the public band table.

Batch1 URL slug is cnc-turning; process_slug_map also has cnc-lathe → CNC/lathe. Platform must alias both.

DFM lines for CNC Turning

• Turned bars with length/diameter above ~3–4× without a tailstock or steady rest chatter; thin tubular walls under 0.8 mm amplify ovality under chuck pressure.
• Sharp internal shoulders and unrelieved grooves force special form tools on the lathe — add groove relief or accept slower cycle time.
• Concentric OD/ID stacks belong on the lathe; prismatic flats and cross-holes may need mill-turn or a second op after parting.
• Bbox longest/shortest ≥ 8 on bar stock usually means long stick-out — specify live center or rewrite as shorter blanks.
• Tubular sections under 1.5 mm wall need soft jaws and light finish passes to hold roundness after roughing.

Brass C360

C360 free-machining brass is chosen for fittings, bushings, and electrical hardware where chip breaking and surface finish matter more than aluminum weight savings. It turns and mills with low force and excellent chip control, producing bright surfaces that often need little cosmetic secondary work beyond degrease.

Frame conductivity, corrosion behavior in non-marine indoor use, and machined brightness. Enrich-compatible finishes may include polish and selective plating paths — do not advertise anodize (aluminum-only). Property copy must sound like brass, not like 6061 anodize guidance.

Watch for stringy chips if feeds are too light; C360 usually breaks chips well at recommended feeds. Soft jaws prevent hexagonal bar mark-off. Avoid carbon-steel contamination on show surfaces bound for polish.

Single-material SAMPLE_GEOM band for C360 leaves — no cross-alloy industry span wording on this hub.

C360 is a lathe favorite: excellent chip break, bright OD finishes, careful with thin-wall collet pressure.

This alloy hub

Finish compatibility on this hub is framed for a single alloy family: list only finishes that enrich marks compatible with this material_slug. Do not present a cross-material finish menu here — that belongs on industry hubs that span alloys.

Open the properties block with this material’s density, typical temper/condition (when known from catalog), and machining character. The table is alloy-centric: one row set, not a comparison across all Batch1 metals and polymers.

Price band on a process×material hub is the SAMPLE_GEOM band for this one material (often qty1/10 sit on the min-order floor). Say “for this alloy on the sample geometry,” never “across aerospace-to-medical mixes.” Child industries share the same mid until industry is wired into comboQuote.

On turning material hubs, stress bar/tube chucking and OD/ID finish for this alloy — not industry program narratives.

Public price range

Aggregated from Batch1 child leaves for this hub (8 pages). USD, rates v1.1, public ±12% on the 50×50×20 mm sample. Compare qty 10 $117.92 ($103.77–$132.07); qty 100 $597.1 ($525.45–$668.76).

Single-material SAMPLE_GEOM band for C360 leaves — no cross-alloy industry span wording on this hub. Price band on a process×material hub is the SAMPLE_GEOM band for this one material (often qty1/10 sit on the min-order floor). Say “for this alloy on the sample geometry,” never “across aerospace-to-medical mixes.” Child industries share the same mid until industry is wired into comboQuote. Not a confirmed order price.

Process comparison

Qty 10 public mid is the median of process×material hub mids, with the span of those mids in parentheses. Tolerance labels and finish names come from the hubs-enrich pack. The machine-rate column is the rates card, not a part price.

Material data

Contract fields from the material endpoint. A missing number is unknown, not an estimate.

Finishes

Finishes for Brass C360 from rates v1.1 only — USD/part adders, not a full quote. Filtered per material compatibility.

• For Brass C360, Bead Blast (bead_blast) adds $5 USD per part with no batch minimum in rates from rates v1.1 finishes_usd_per_part.
• For Brass C360, Powder Coat (powder_coat) adds $12 USD per part with no batch minimum in rates from rates v1.1 finishes_usd_per_part.
• For Brass C360, Polish (polish) adds $15 USD per part with no batch minimum in rates from rates v1.1 finishes_usd_per_part.
• For Brass C360, Nickel/Zinc Plate (nickel_or_zinc_plate) adds $10 USD per part with batch minimum $50 from rates v1.1 finishes_usd_per_part.

Questions