Antique 18in Wooden Foundry Cog Wheel Sand Casting Pattern, Handmade

A large antique wooden foundry cog wheel pattern, originally used in the traditional sand-casting process to produce heavy steel gears. This example measures approximately 18 inches in diameter and 3 inches wide, with sharply defined teeth and robust cross-braced spokes that demonstrate the precision required for accurate moulding.Each pattern like this would have been pressed into fine casting sand to create a cavity for molten metal, which would take the exact shape of the wooden form. Once cooled, the resulting gear was removed and machined to its final finish. Such patterns were essential components of industrial manufacturing from the late 19th through the mid-20th century, when skilled patternmakers produced them entirely by hand before the widespread use of metal and resin models.This piece bears the stamped marking SG5929A and 43T, likely identifying its production reference and number of teeth. It dates from around the 1930s to 1950s and has developed a rich, warm patina over time, reflecting both use and craftsmanship. With its crisp geometry and sculptural quality, it stands as an impressive relic of England’s industrial heritage—ideal as a decorative or statement piece in an interior setting. Due to its

size and value, this item will be sent via Royal Mail Parcel Force to ensure full insurance coverage, which is reflected in the postage cost.I aim to get your items to you as quickly as I can. I try to send everything the next working day. All items will be very carefully packaged and will be sent tracked for your peace of mind.Please study the photographs as they form part of the description. Feel free to ask any questions – I’m always happy to help. Any stand used in the photography is not included in the sale.I will only post to your registered eBay postal address, so please ensure your details are up to date. For international sales, I use eBay’s Global Shipping Program. These costs are set by eBay, so please check them at the time of purchase.Please note, due to some questionable claims for returns, all items are carefully wrapped and packaged. If, in the unlikely event, they arrive in less than perfect condition, please provide three photographs: one showing the damage to the item, one of the outside of the packaging, and one image of the inside of the package where both the packaging and postage label are clearly visible and readable.Please forward these photographs to me so I can instigate a claim with the carrier. If I do not receive this evidence of damage in transit, it may delay or prevent a refund. Thanks for looking.