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Metal Letters

Cast Metal Signs

Solid metal cast from molten aluminum, brass or bronze, with dimensional relief that flat-cut letters cannot achieve. Built for monumental entrances and institutions that demand permanence.

From $53 per item
For small cast aluminum plaques. Larger sizes, brass/bronze at higher pricing.
Cast Metal Signs
From $53Per Item
Solid CastMolten Metal
2-YearWarranty
10-15 DaysProduction
Specifications

What goes into every sign.

Technical Specifications

ProcessSand cast, investment cast, or die cast
MaterialsAluminum, brass, bronze, iron
FinishNatural patina, polished, painted, or clear-coated
Thickness5mm–25mm typical
WeightSubstantial — solid metal feel
MountingStud mount, standoff, or flush

Ordering & Delivery

Minimum order1 piece
Production18-25 days (includes mold making)
ProofFree 3D render proof
ShippingExpress 7–10 days · Air ~10 days · Sea 40–65 days
WarrantyLifetime on casting defects
Payment50% deposit, 50% before shipping
Options

Casting Methods.

Sand CastTraditional, textured surface — monumentalBase
Investment CastSmooth, detailed — jewelry-grade+30%
Die CastHigh volume, consistent — bulk ordersTooling cost
Lost WaxArtisanal, one-off — fine art pieces+50%
Production

From your file to your door.

Day 1
Design + 3D model
Day 2-5
Mold making
Day 6-10
Cast + cool
Day 11-16
Finish + patina
Day 17-20
QC + pack
Day 21-25
Ship
SignLumi production floor
Why SignLumi

A real factory, not a trading company.

When you buy from a trading company, you pay a middleman and wait on someone else's production line. When you buy from SignLumi, you talk directly to the factory that cuts, welds, assembles and wires your signs.

  • 3,000 m² production floor — we control every step in-house
  • CE & UL certified, with export quality control
  • MeanWell power supplies and Rishang LED modules
  • 2-year warranty on every illuminated sign
Buyer Planning Guide

Plan cast metal signs around relief, weight and mounting

Cast metal signs create dimensional letters, plaques and emblems by forming metal in a mould. The result can carry deeper relief and more complex shaping than a simple flat-cut letter, but the project must be planned around the pattern, alloy, surface finish and final weight. Mounting is especially important because the fixing system must suit both the cast item and the wall. Buyers should approve artwork, tooling requirements and the construction details before production.

Application and viewing distance

Cast signs are commonly considered for entrances, institutional signs, plaques and dimensional branding where relief is part of the design. Letter height and detail should be reviewed from the main viewing distance.

Casting method

Sand, investment and die-casting describe different production approaches and are suited to different shapes, quantities and detail requirements. The quotation should state which method is proposed for the approved design.

Alloy and finish

Aluminum, brass or bronze can be specified with an appropriate finish for the intended appearance and exposure. For outdoor or coastal sites, confirm the alloy and protection in the bill of materials.

Relief and lighting

Changes in depth create shadows that affect readability under daylight and artificial lighting. Review the model or dimensioned drawing, especially where letter edges, borders and background surfaces meet.

Weight and fixing

Cast components can be heavier than sheet-metal letters, so weight must be calculated with the final dimensions and alloy. Mounting hardware and wall anchors must be selected for the actual wall condition.

Pattern and approval

Complex or custom shapes may require tooling and pattern work. Ask for tooling charges, revision rules, weight estimates and a dimensioned approval before releasing production.

DecisionWhat to compareWhat to send
ShapeFlat, raised or deep-relief detailVector artwork or model
MethodSand, investment or die-castQuantity and detail requirement
AlloyAluminum, brass or bronzeIndoor or outdoor location
FinishColor, polish and protectionSample or reference image
MountingEstimated weight and wall typeSite photos and fixing notes
ToolingPattern and revision requirementsSigned drawing and quotation
FAQ

Questions buyers ask us.

How heavy are cast signs?

Weight depends on the alloy, dimensions, relief and thickness. The factory should calculate it from the approved drawing so the mounting and wall fixing can be selected correctly.

Do I need special mounting?

Mounting must be designed for the estimated sign weight and the actual wall construction. Provide wall photos and dimensions so the fixing method can be confirmed before production.

Is the mould cost included?

Tooling requirements depend on the selected casting method and design. Any pattern, mould or setup charge should be itemized in the quotation and linked to the approved artwork revision.

How is the weight of a cast metal sign determined?

Weight depends on the alloy, dimensions, relief and thickness. The factory should calculate it from the approved drawing so the mounting design and wall fixing can be selected correctly.

What mounting information is needed for cast signs?

Provide the wall type, mounting height, access conditions and photos. The fixing design should account for the estimated sign weight and whether the wall is concrete, masonry, framed or another construction.

Is tooling included in a cast sign quotation?

Tooling requirements depend on the selected casting method and design complexity. The quotation should itemize any pattern, mould or setup charge and confirm which artwork revision the tooling will follow.

Start your sign project.

Send us your logo and dimensions — get a free quote within 24 hours.

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