3mm stainless steel round ball media — a 1KG bag of tumbling shot for burnishing jewellery and precious metals to a bright, work-hardened finish.
⭐ At a glance
📏 3mm diameter round ball media
✅ Fits any rotary or vibratory jewellery/metal tumbler that takes stainless steel shot
📦 1KG of media supplied
✔️ New, unused stock
Material: Stainless steel
Specifications
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Unit Quantity: 1KG
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Condition: New
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Material: Steel
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Sub-Type: Media shot
🔧 What it does & how to use
Stainless steel round ball media is used in a rotary or vibratory tumbler to burnish precious metal jewellery, findings and small parts to a smooth, bright, mirror-like finish. As the balls tumble against the workpieces they compact and polish the surface rather than cutting it, leaving metal work-hardened, rust-free and corrosion-resistant. It's a standard finishing step for jewellers and hobbyists after soldering, forming or polishing.
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Load the barrel: add your jewellery or metal pieces along with the 3mm ball media.
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Add liquid: fill with water and a small amount of burnishing soap or compound.
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Run the tumbler: switch on and let it run for the recommended time (typically 30 minutes to a few hours, depending on the finish needed).
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Drain and rinse: pour off the liquid, rinse the pieces and media, and separate the two.
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Dry the media: allow the steel shot to dry fully before storing, to prevent rust.
⚠️ Please check: this steel shot is intended for solid metal jewellery and findings — it's not suitable for tumbling with delicate gemstones, pearls or fragile settings, as impact can cause damage.
