Fit review
Lid, slide and hinge fits are set with the anodize allowance, and color swatches are agreed before sampling.
CONSUMER METAL PARTS
Anodized Aluminum Pocket Cases and Pill Organizers
Four CNC machined aluminum products in one program: a round case, a slim sliding-lid case, a compact case with a mirror and a weekly 2 × 4 pill organizer, each offered in four anodized colors.
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Typical requirements
- Products
- Ø72 × 25 mm round case, 90 × 46 × 16 mm slide case, Ø72 × 20 mm mirror case, 111 × 57 × 20 mm weekly organizer
- Material
- 6061-T6 aluminum machined from solid, polished 304 stainless mirror
- Finish
- Bead blast, Type II anodize and seal in rose gold, champagne and matte black
- Pearl white
- Appearance target. The finish route (a ceramic coating, a light champagne anodize, or a specialist white anodize if samples hold the shade) is chosen from samples before production
- Fitted parts
- Silicone O-rings in a food-contact grade, with the standard (for example FDA 21 CFR 177.2600 or EU 1935/2004) and the supplier declaration confirmed on the order; epoxy-sealed N52 magnets, spring plunger detents
- Tolerance
- ±0.1 mm general, 0.3 mm edge break on outside edges
- Quantities
- Color samples, then 100 to 1000 pieces per product
Engineering considerations
- Sliding and bayonet fits are machined with an allowance for the anodize film, so lids turn smoothly after finishing.
- Lids must close without rattle and stay closed when the full case is turned over and shaken.
- White anodizing is difficult to keep consistent, so options such as a ceramic coating or a light champagne are compared on samples.
- Inner compartments are kept smooth and fully anodized, and only anodized aluminum, stainless steel and food-contact grade silicone touch the contents.
Typical manufacturing route
CNC machining
Bodies and lids are machined from solid 6061-T6, including compartments, knurling and grip grooves.
Blast and anodize
Parts are bead blasted, anodized and sealed in the agreed colors, with logo areas laser engraved.
Assembly
O-rings, sealed magnets, plungers and mirrors are fitted, then every case is opened, closed and shake tested.
Typical inspection plan
- Color checked against the approved swatch for each anodizing batch.
- Lid opening, detent clicks and closing checked by hand on every assembled case.
- Edge break, cosmetic surfaces and inner compartments inspected before packing.
Applying this to your part
The actual route, tolerances, inspection scope and records are agreed for each drawing during quotation.
Engineering guides for parts like this
Engineering guideAnodizing Machined Aluminum Parts: Coating Build-Up, Thread Masking and Fit AllowancesAnodizing shrinks bores and grows shafts. How much Type II and hard anodizing add, worked machining allowances for H7 bores, g6 shafts and M6…Read the guideEngineering guideChoosing 6061, 6082 or 7075 Aluminum for Robot Joint Housings and Automation PartsTypical properties of 6061-T651, 6082-T6 and 7075-T651 compared by temper, when 7075 actually fixes a part, how temper, stock form and anodizing change the…Read the guide
See also our custom machined parts.
PROJECT INQUIRY
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Send the drawing, material, quantity and the features that control assembly. An engineer replies within one business day; NDAs are signed on request.
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