Guides for hi-fi brands sourcing machined and finished audio parts.https://hifimfg.com/https://hifimfg.com/blog/die-cast-vs-cnc-audio-chassis/https://hifimfg.com/blog/die-cast-vs-cnc-audio-chassis/Die cast vs CNC audio chassis: how tooling cost sets the break-even volume, what a cast part gives up on tolerance and anodize, and what to ask in the RFQ.Sun, 08 Nov 2026 00:00:00 GMThttps://hifimfg.com/blog/lead-free-brass-audio-parts-rohs/https://hifimfg.com/blog/lead-free-brass-audio-parts-rohs/Free-cutting brass C36000 carries 2.5 to 3.0% lead. See what RoHS, Prop 65 and the 100 ppm children's limit mean for audio parts and what to ask a shop.Sat, 07 Nov 2026 00:00:00 GMThttps://hifimfg.com/blog/pvd-coating-audio-knobs/https://hifimfg.com/blog/pvd-coating-audio-knobs/PVD coating on audio knobs and trim: colours available, which metals take it directly, the 0.2 to 2 micron film, line-of-sight limits and the RFQ checklist.Fri, 06 Nov 2026 00:00:00 GMThttps://hifimfg.com/blog/turntable-motor-pulley-machining/https://hifimfg.com/blog/turntable-motor-pulley-machining/How a turntable motor pulley is specified and machined: diameter from motor rpm, bore fit, groove runout, finish and the checks to put in the RFQ.Thu, 05 Nov 2026 00:00:00 GMThttps://hifimfg.com/blog/tonearm-counterweight-material/https://hifimfg.com/blog/tonearm-counterweight-material/Choosing a tonearm counterweight material: density, ring size and stub length for brass, stainless and tungsten alloy, machining, mass tolerance and RFQ items.Wed, 04 Nov 2026 00:00:00 GMThttps://hifimfg.com/blog/headphone-grille-manufacturing/https://hifimfg.com/blog/headphone-grille-manufacturing/How to choose etched, punched or machined headphone grilles: minimum hole and web rules, open area, burr side, tolerance and what to put in the RFQ.Tue, 03 Nov 2026 00:00:00 GMThttps://hifimfg.com/blog/audio-knob-shaft-fit/https://hifimfg.com/blog/audio-knob-shaft-fit/How an audio knob fits its shaft: set screw, D-bore or knurled spline, ISO bore tolerances, pointer alignment, anodize growth in the bore and RFQ items.Mon, 02 Nov 2026 00:00:00 GMThttps://hifimfg.com/blog/turntable-plinth-machining/https://hifimfg.com/blog/turntable-plinth-machining/How a turntable plinth is machined in 6061 aluminum, cast acrylic or layered wood: weight, damping, thermal movement, cracking risks, features and RFQ items.Sun, 01 Nov 2026 00:00:00 GMThttps://hifimfg.com/blog/machined-aluminum-waveguide/https://hifimfg.com/blog/machined-aluminum-waveguide/How a machined aluminum waveguide is specified: contour type, turned or milled route, scallop height, throat and mouth detail, finish and how to check it.Sat, 31 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/machined-aluminum-speaker-baffle/https://hifimfg.com/blog/machined-aluminum-speaker-baffle/How a machined aluminum speaker baffle is specified: driver cutout styles, chamfer or radius edges, anodize growth, flatness, mass and a checklist for the RFQ.Fri, 30 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/cnc-machined-iem-shells/https://hifimfg.com/blog/cnc-machined-iem-shells/How CNC machined IEM shells are made in 6061 aluminum, Ti-6Al-4V titanium or zirconia ceramic: weight, finish route, vent and nozzle tolerances and RFQ items.Thu, 29 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/wood-aluminium-hybrid-audio-enclosures/https://hifimfg.com/blog/wood-aluminium-hybrid-audio-enclosures/How to combine wood and aluminum in an amplifier or speaker enclosure: movement, joints, fasteners, finishing order and the gap design that keeps the seam clean.Wed, 28 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/vibratory-finishing-small-audio-hardware/https://hifimfg.com/blog/vibratory-finishing-small-audio-hardware/How vibratory finishing and tumbling deburr and smooth small audio parts such as feet, spacers and knobs: media, cycle time, limits and drawing notes.Tue, 27 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/tonearm-tube-carbon-fibre-vs-aluminium/https://hifimfg.com/blog/tonearm-tube-carbon-fibre-vs-aluminium/Carbon fibre or aluminum for a tonearm tube: stiffness per gram, damping, joining to metal fittings, machining of the ends and what each choice does to cost.Mon, 26 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/tonearm-component-machining/https://hifimfg.com/blog/tonearm-component-machining/How tonearm parts are machined: bearing housing bores, pivot geometry, headshell slots, counterweights and the tolerances, finishes and materials each part needs.Sun, 25 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/titanium-audio-parts-headphones-tonearms/https://hifimfg.com/blog/titanium-audio-parts-headphones-tonearms/When titanium earns its price in audio parts: headphone yokes, tonearm tubes and headshells. Grades, stiffness, machining difficulty, anodized colour and cost.Sat, 24 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/threads-in-anodized-chassis/https://hifimfg.com/blog/threads-in-anodized-chassis/How to keep screw threads working in an anodized aluminum chassis: masking, tapping after anodize, thread inserts and the drawing notes that prevent stripped holes.Fri, 23 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/phono-cartridge-body-machining/https://hifimfg.com/blog/phono-cartridge-body-machining/How phono cartridge bodies are machined at 15 to 20 mm: materials, thin walls, the 12.7 mm mounting pattern, threads, micro tooling and cosmetic finish.Thu, 22 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/mirror-polishing-aluminium-brass-audio/https://hifimfg.com/blog/mirror-polishing-aluminium-brass-audio/What a mirror finish on aluminum or brass audio parts takes: polishing steps, why edges and flatness suffer, how to protect the shine and what it adds to a quote.Wed, 21 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/microphone-body-grille-machining/https://hifimfg.com/blog/microphone-body-grille-machining/How microphone bodies and grilles are machined: brass or aluminum bodies, thin walls, thread standards, mesh and perforated grilles, plating and drawing notes.Tue, 20 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/machining-thick-front-panels/https://hifimfg.com/blog/machining-thick-front-panels/How a 10 to 20 mm aluminum front panel is machined for hi-fi: pocket depth, internal stress, flatness checks and the operation order that keeps the face flat.Mon, 19 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/hard-anodizing-vs-type-2-audio-parts/https://hifimfg.com/blog/hard-anodizing-vs-type-2-audio-parts/Type II and Type III hard anodizing compared for knobs, feet and faceplates: coating thickness, dimension growth, colour range, wear and what each adds to price.Sun, 18 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/guitar-pedal-enclosure-manufacturing/https://hifimfg.com/blog/guitar-pedal-enclosure-manufacturing/How machined aluminum guitar pedal and pro-audio enclosures are made: cast, extruded or billet bodies, hole sizes, wall thickness, tough finishes and cost.Sat, 17 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/diamond-cut-chamfer-audio-panels/https://hifimfg.com/blog/diamond-cut-chamfer-audio-panels/How a diamond cut chamfer is machined on an aluminum audio panel, what it costs, and the anodize and handling steps that keep the bright edge bright.Fri, 16 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/dac-streamer-enclosures-manufacturing/https://hifimfg.com/blog/dac-streamer-enclosures-manufacturing/How DAC and streamer enclosures are built: extrusion with end plates or milled from solid, antenna windows, shielding, rear cutouts, finish demands and cost.Thu, 15 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/cosmetic-inspection-lighting-viewing-distance/https://hifimfg.com/blog/cosmetic-inspection-lighting-viewing-distance/How to write a cosmetic acceptance rule for audio parts: viewing distance, light level, zones and defect limits, so shop and buyer judge a faceplate alike.Wed, 14 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/copper-heatsinks-busbars-amplifiers/https://hifimfg.com/blog/copper-heatsinks-busbars-amplifiers/How copper heat spreaders and busbars are machined and plated for amplifiers: conductivity, gummy cutting, flat contact faces, bend radius, plating choice and cost.Tue, 13 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/aluminium-speaker-cabinet-machining/https://hifimfg.com/blog/aluminium-speaker-cabinet-machining/What it takes to machine a billet aluminum speaker cabinet: block size, material removed, wall thickness, driver cutouts, damping, anodizing limits and cost.Mon, 12 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/acrylic-polycarbonate-windows-audio-panels/https://hifimfg.com/blog/acrylic-polycarbonate-windows-audio-panels/Acrylic or polycarbonate for a display window in an audio front panel: scratch resistance, edge finish, thermal gaps, tint, mounting and how each is cut.Sun, 11 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/acetal-nylon-parts-audio-gear/https://hifimfg.com/blog/acetal-nylon-parts-audio-gear/When to use machined acetal or nylon in hi-fi gear: bushings, spacers, feet and insulators. Moisture, expansion, tolerances, fixings and what to write on the drawing.Thu, 08 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/303-vs-304-stainless-audio-knobs-feet/https://hifimfg.com/blog/303-vs-304-stainless-audio-knobs-feet/Which stainless grade to pick for audio knobs, feet and spikes: machinability, polish quality, corrosion, magnetism and cost, with a simple rule for each part.Mon, 05 Oct 2026 00:00:00 GMThttps://hifimfg.com/blog/powder-coating-audio-chassis/https://hifimfg.com/blog/powder-coating-audio-chassis/Powder coat is the only finish option on steel and a real alternative on aluminum. What it changes about tolerance, grounding, edge wear and colour matching.Sun, 27 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/protecting-drawings-ip-overseas-sourcing/https://hifimfg.com/blog/protecting-drawings-ip-overseas-sourcing/What actually protects a design once a drawing leaves your inbox: NDAs that mean something, drawing hygiene, tooling ownership and staged releases.Sun, 27 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/tariffs-landed-cost-audio-parts/https://hifimfg.com/blog/tariffs-landed-cost-audio-parts/Why duty has become a bigger swing factor than freight on machined aluminum and steel audio parts, and the two questions to get answered before you commit to a quantity.Sun, 27 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/emi-shielding-audio-enclosures/https://hifimfg.com/blog/emi-shielding-audio-enclosures/Seams, gaps and gaskets decide whether a metal box shields anything. Anodize is an insulator, aperture length beats area, and what to put on a drawing.Fri, 25 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/tube-amp-chassis-manufacturing/https://hifimfg.com/blog/tube-amp-chassis-manufacturing/Valve amps run hot, weigh a lot and put mains voltage on an exposed top plate. Material, thickness, socket cutouts, ventilation and the safety points.Thu, 24 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/connector-panel-cutouts-audio/https://hifimfg.com/blog/connector-panel-cutouts-audio/A working reference for connector panel cutouts on an audio chassis, plus the panel thickness limits and positioning rules that decide whether parts fit.Wed, 23 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/transformer-mounting-chassis/https://hifimfg.com/blog/transformer-mounting-chassis/A mains transformer is the heaviest thing in the box and the loudest source of hum. Bolt patterns, plate thickness, the shorted turn problem and callouts.Tue, 22 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/chassis-resonance-damping/https://hifimfg.com/blog/chassis-resonance-damping/Thin panels ring, flat faces radiate and a transformer excites both. Ribs, mass, constrained layer damping, and which of them a machine shop can deliver.Mon, 21 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/anodizing-colour-match-hifi/https://hifimfg.com/blog/anodizing-colour-match-hifi/Why the faceplate and the knob come back different shades of black, what controls anodize colour, and how to write a spec a finisher can repeat next year.Sun, 20 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/sheet-metal-covers-audio-dfm/https://hifimfg.com/blog/sheet-metal-covers-audio-dfm/Bend radius, bend allowance, minimum flange length and why a folded box is never square. What a press brake can hold and how to draw around its limits.Sat, 19 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/audio-chassis-cost/https://hifimfg.com/blog/audio-chassis-cost/What you actually pay for in an audio chassis: billet versus extrusion, the finish line, engraving, and why 30 units cost so much more per piece than 300.Fri, 18 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/speaker-terminals-binding-posts/https://hifimfg.com/blog/speaker-terminals-binding-posts/Binding post spacing, anti-rotation, plate thickness and the plating choices that decide whether a terminal still turns cleanly after five years of use.Thu, 17 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/surface-roughness-cosmetic-faces/https://hifimfg.com/blog/surface-roughness-cosmetic-faces/Surface roughness numbers are useful on a sealing face and misleading on a cosmetic one. What Ra measures, what it misses and what to specify instead.Wed, 16 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/moq-lead-time-audio-parts/https://hifimfg.com/blog/moq-lead-time-audio-parts/Why finishing sets the minimum order rather than machining, where the weeks actually go in a twelve week quote, and how a small brand plans around both.Tue, 15 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/cnc-volume-knob-manufacturing/https://hifimfg.com/blog/cnc-volume-knob-manufacturing/Billet aluminum or brass, knurl or flute, set screw or collet: what each choice does to the cost of a machined volume knob and to how it feels in the hand.Mon, 14 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/tolerance-stack-basics-audio/https://hifimfg.com/blog/tolerance-stack-basics-audio/Worst case against statistical stacking, why chained dimensions cost money, and how to choose datums so the features a customer sees stay under control.Sun, 13 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/quoting-cosmetic-machining-work/https://hifimfg.com/blog/quoting-cosmetic-machining-work/Cosmetic work looks like ordinary machining and prices nothing like it. The lines a general job shop leaves out, and how to put a number on appearance risk.Sat, 12 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/finishing-in-house-or-outsource/https://hifimfg.com/blog/finishing-in-house-or-outsource/The case for and against an in house line, what a managed finisher relationship needs instead, and the volume at which the arithmetic actually changes.Fri, 11 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/turntable-platter-machining/https://hifimfg.com/blog/turntable-platter-machining/Flatness, runout, dynamic balance and material choice on a machined platter, plus the drawing callouts that separate a usable quote from an expensive guess.Thu, 10 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/qualifying-audio-rfqs/https://hifimfg.com/blog/qualifying-audio-rfqs/Hi-fi work has good customers and expensive ones, and the drawing usually tells you which. The signals that separate a repeat account from a rejected batch.Wed, 09 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/selling-finishing-capability/https://hifimfg.com/blog/selling-finishing-capability/Every shop website says precision and quality. What buyers of cosmetic parts actually look for, and the specific proof that separates you from the machine list.Tue, 08 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/choosing-a-shop-for-audio-parts/https://hifimfg.com/blog/choosing-a-shop-for-audio-parts/The questions that separate a shop that can make your faceplate from one that can make it twice. What to ask, what to send and what to check on arrival.Sun, 06 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/aluminium-alloys-for-anodized-audio-parts/https://hifimfg.com/blog/aluminium-alloys-for-anodized-audio-parts/6061, 6063, 6060 and 5052 all anodize differently. What each one does to colour, clarity and machining, and why mixing two alloys in one product causes trouble.Wed, 02 Sep 2026 00:00:00 GMThttps://hifimfg.com/blog/brushed-finish-audio-panels/https://hifimfg.com/blog/brushed-finish-audio-panels/Grit number, grain direction, dry versus wet brushing and why the grain has to continue across two parts. The callouts that make a brushed panel repeatable.Fri, 28 Aug 2026 00:00:00 GMThttps://hifimfg.com/blog/bead-blasting-audio-enclosures/https://hifimfg.com/blog/bead-blasting-audio-enclosures/Glass bead, aluminum oxide and grit size all change how an enclosure looks after anodize. How to specify a blast finish so batch two matches batch one.Mon, 24 Aug 2026 00:00:00 GMThttps://hifimfg.com/blog/engraving-vs-silkscreen-audio-panels/https://hifimfg.com/blog/engraving-vs-silkscreen-audio-panels/Five ways to put a logo and channel labels on a front panel, what each costs, how each survives ten years of use and when in the process each one happens.Thu, 20 Aug 2026 00:00:00 GMThttps://hifimfg.com/blog/brass-and-copper-audio-parts/https://hifimfg.com/blog/brass-and-copper-audio-parts/Brass knobs, copper trim and bronze feet look superb and tarnish fast. Alloys, lacquers, plating and the drawing notes that stop a batch ageing on the shelf.Sun, 16 Aug 2026 00:00:00 GMThttps://hifimfg.com/blog/low-volume-anodizing-minimum-order/https://hifimfg.com/blog/low-volume-anodizing-minimum-order/Anodizers price by rack and by tank time, not by piece. What that means for a boutique audio run and six practical ways to keep a small batch affordable.Wed, 12 Aug 2026 00:00:00 GMThttps://hifimfg.com/blog/billet-extrusion-sheet-chassis/https://hifimfg.com/blog/billet-extrusion-sheet-chassis/The three ways to make an audio enclosure, what each one really costs at 30 units and at 300, and how to mix them without the finish giving the joint away.Sat, 08 Aug 2026 00:00:00 GMThttps://hifimfg.com/blog/heatsink-extrusion-amplifier-chassis/https://hifimfg.com/blog/heatsink-extrusion-amplifier-chassis/Fin geometry, thermal resistance ratings, extrusion tolerances and the secondary machining that turns a length of raw profile into a chassis side panel.Tue, 04 Aug 2026 00:00:00 GMThttps://hifimfg.com/blog/rack-panel-dimensions-19-inch/https://hifimfg.com/blog/rack-panel-dimensions-19-inch/EIA-310 panel widths, 1U to 6U heights, mounting hole positions and the clearances that stop a beautifully machined panel from fouling the rack rails.Thu, 30 Jul 2026 00:00:00 GMThttps://hifimfg.com/blog/headphone-cup-manufacturing/https://hifimfg.com/blog/headphone-cup-manufacturing/Mirrored parts, acoustic chamber tolerances, gimbal fits and why a pair of headphone cups is one part number with two halves, and not two part numbers.Sun, 26 Jul 2026 00:00:00 GMThttps://hifimfg.com/blog/drawing-callouts-cosmetic-faces/https://hifimfg.com/blog/drawing-callouts-cosmetic-faces/A cosmetic face is a specification, not an assumption. The notation, the zones and the criteria that make appearance something a shop can quote and measure.Wed, 22 Jul 2026 00:00:00 GMThttps://hifimfg.com/blog/panel-gaps-audio-enclosures/https://hifimfg.com/blog/panel-gaps-audio-enclosures/Gap is a system property, not a part property. How tolerance stacks up across a chassis, and the design choices that make a gap look deliberate, not accidental.Sat, 18 Jul 2026 00:00:00 GMThttps://hifimfg.com/blog/isolation-feet-spikes-machining/https://hifimfg.com/blog/isolation-feet-spikes-machining/Feet are the cheapest part of a hi-fi product to get wrong. Thread choice, levelling range, tip design, damping inserts and how to stop them marking furniture.Tue, 14 Jul 2026 00:00:00 GMThttps://hifimfg.com/blog/first-article-inspection-cosmetic-parts/https://hifimfg.com/blog/first-article-inspection-cosmetic-parts/A standard FAI measures dimensions. On an audio part that is half the job. What to ask for, how to judge it and what to write down so batch two matches.Fri, 10 Jul 2026 00:00:00 GMThttps://hifimfg.com/blog/packing-finished-audio-parts/https://hifimfg.com/blog/packing-finished-audio-parts/Most cosmetic rejects are created after the part was made. Protective film, interleaving, tray design and the packing clauses worth putting in the order.Mon, 06 Jul 2026 00:00:00 GMT