Cast aluminum plaque with a hand-etched eagle

Oct 28, 2026 Last reply: 1 day ago 4 Replies
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Most wall mounts for displaying a sword are flat bar or off-the-shelf hooks, so a full sand casting is a refreshing way to go about it. White Squirrel Enterprises sawed a peaked, house-shaped pattern from oriented strand board, glued metal trim around its edges, and set it into a two-part flask packed with red Petrobond sand. Scrap aluminum melted in a crucible inside a tank-style propane foundry, got poured into the mold, and the rough casting was quenched in a bucket of water before being cut down with an angle grinder and deburred with a pneumatic wire brush.



What stands out is the surface work. A hobby knife cut an Imperial Aquila double-headed eagle stencil, green painter's tape masked the flat face, and the maker mixed Windsor table salt into water, then rubbed the solution over the design with a soaked cotton swab while a 12V power supply and alligator clips drove the etch. The finished face carries a hammered, foiled silver texture with darker trim framing it, and thin black cords hang the plaque from above. Up close it pairs nicely with the ornate silver-toned cast fittings on the sword's pommel and guard and the polished reddish-brown scabbard.



The casting itself is the honest weak point. The maker states the pour did not go the best, that a properly sized cope and drag was not made, and that an additional riser might have helped. The etching, in contrast, came out very well, and the maker plans to try muriatic acid next, where a soak is said to cut roughly 1/32 of an inch in about half a minute.



Project by White Squirrel Enterprises. Watch it on their YouTube channel:

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Choosing saltwater and a swab over acid for the first attempt seems like a smart call to me. A cotton swab gives you slow, local control over where the etch bites, so a mistake stays small. The trade-off is pace, since an acid soak reportedly reaches 1/32 of an inch in around 30 seconds.

How did the maker gauge the depth of the saltwater etch on the eagle? I would be nervous about rubbing longer than needed and eating through the tape edge or ending up with an uneven floor inside the design.

The maker has not said how deep the saltwater etch went or how it was judged. The only depth figure mentioned anywhere is for muriatic acid, which takes about 30 seconds to etch 1/32 of an inch deep, and the maker has stated they intend to try that acid on a future attempt.

For the next pour, I would add a riser paired with a pouring cup so the whole mold fills in a single continuous pour. That directly addresses the two weak spots the maker named, the undersized cope and drag and the missing extra riser, and it should cut down on the cleanup the grinder and wire brush had to handle.

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