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.
| Process | Sand cast, investment cast, or die cast |
| Materials | Aluminum, brass, bronze, iron |
| Finish | Natural patina, polished, painted, or clear-coated |
| Thickness | 5mm–25mm typical |
| Weight | Substantial — solid metal feel |
| Mounting | Stud mount, standoff, or flush |
| Minimum order | 1 piece |
| Production | 18-25 days (includes mold making) |
| Proof | Free 3D render proof |
| Shipping | Express 7–10 days · Air ~10 days · Sea 40–65 days |
| Warranty | Lifetime on casting defects |
| Payment | 50% deposit, 50% before shipping |
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.
Heavier than sheet metal — an 18-inch cast aluminum letter weighs 3–5 lbs. That weight reads as quality and permanence.
We supply reinforced brackets and specify wall anchors for your surface — concrete, brick or drywall with backing.
Included for standard sand casting; complex or investment shapes may carry a one-time fee, quoted upfront.
Send us your logo and dimensions — get a free quote within 24 hours.