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Free UK delivery over £30 | Free international delivery over £125

208 - Radioactive Trefoil Shot Plate

208 - Gemina Radioactive Shot PlateClick the image to enlarge

208 - Radioactive Trefoil Shot Plate

Caution! Radioactive material present! This single design shot plate creates the Radiation warning trefoil symbol in silver, gold, pewter or copper. At approximately 10mm in diameter, this design would work well as a small pendant, stud or ring signet. For extra toxicity, check out our Biohazard shot plate.

Take a look at our other shapes and symbols shot plates and dies.

BiohazardHot!Union Jack

Product description

  • Specification

    The Radioactive trefoil symbol measures approximately:
    Width: 10.5mm
    Height: 10.5mm
    Depth: 0.8mm

    This shot plate is manufactured from mild steel and measures approximately 20mm thick and 40mm in diameter. Made in England, UK.

  • Instructions

    Can I use this tool with a hammer and a punch?

    Yes - When using this tool with a hammer and punch, it's crucial to work over a solid and rigid surface such as a stump, anvil or a concrete floor. Without a solid surface, no amount of hammering will produce good results! The size of your hammer plays a big part too - a 4lb lump hammer is ideal. Do not use a hammer directly on the plate, always use a punch when hammering.

    Can I use this shot plate with a hydraulic press?

    Yes, all of our shot plates can be used in a press. Ensure your metal is annealed regularly.

    How much silver shall I use with this design?

    You can use approximately 1.5g of silver with this design.

    What shape of silver should I use?

    Round shot:

    Melt your metal into round shot. Use a hammer and punch to force the silver into the die. Anneal after every 3 or 4 heavy blows.

    Removing your impression from the die

    Occasionally, some dies can 'hold on' to your metal. This is more common when using a press compared to hammering. Ensure the dies are clean before use. If you wish, you can apply a very small amount of oil into the die before forming as this can help removal. Excess metal will create a flange around the design that will aid in removal after hammering or pressing. Carefully use a thin bladed knife under the excess metal to lift the impression out of the die.

    Some additional information can be found here shot plate and impression die tips.

  • Additional Information

    Take a look at our other shapes and symbols shot plates and impression dies.

    If you have a solid and rigid work surface, you could use our Punch (Force) tool with a 2-4lb lump hammer.If you need a pusher for your press, you can buy a flat or tapered pusher from our range of press tools.
    If you need a spacer for your press, you can buy one here.
    Gemina Punch (Force) ToolGemina Press PushersGemina Press Pushers
  • Shipping


    UK delivery is free on orders over £30. A delivery charge of £6 applies to orders under £30.


    Free International Shipping on orders over £125GBP. Orders under £125GBP have flat rate shipping charge of £10-25 (depending on country) for all items in basket. We use UPS/DPD for all international deliveries. The buyer is solely responsible for understanding and complying with the import requirements of the destination country and any duty, VAT, taxes, or clearance charges that may be applicable outside of the UK. If you need to have your parcel delivered to a PO Box. Please contact us first.

    For more delivery information, please see our delivery policy.

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208 - Radioactive Trefoil Shot Plate