Clearcast Copper Metal Powder is a high-quality metallic filler widely used in resin casting, cold casting and composite applications where enhanced thermal behaviour, strength, and authentic metallic appearance are required. It is particularly effective in larger casts, helping to reduce exotherm and minimise shrinkage while improving the overall strength and stability of the finished piece.
This versatile metal powder is ideal for producing realistic cold cast copper effects, delivering the look, weight, and surface character of solid copper when combined with suitable resin systems. Its fine particle size allows for smooth blending, excellent surface detail, and professional-quality finishes across a wide range of decorative and functional casting projects.
Copper Metal Powder is typically added at the user’s discretion, as every project has unique requirements. A minimum recommended mix ratio of 1:1 (metal powder to resin by weight) will achieve a visible metallic effect, while ratios of up to 4 parts metal powder to 1 part resin can be used for a heavier, more authentic copper finish. As resin types and casting methods vary, small test mixes are always recommended to determine the optimal ratio for your application.
For the best visual results, dusting the mould surface with copper powder before adding the resin-powder mix is recommended. This technique produces a deeper, richer metallic surface. Different metal powders can also be blended together to create custom effects, provided they are thoroughly mixed before being incorporated into the resin. Please note that natural colour variations may occur between batches, which is a normal characteristic of metal powders.
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Copper Metal Powder is an excellent choice for makers, artists, and professionals seeking durable castings with authentic copper aesthetics, making it suitable for both creative and practical applications.
Code: 11332
Customer Reviews5.05 5.0/5 Based on 2 reviews
ExcellentReviewed by Mike.stallard on 22 Feb 2026
Just what I wanted - speedy delivery too !
All good very quick serviceReviewed by Derekmaplesden on 30 Sep 2025
Job all done thanks for prompt service
Fibreglass Supplies use Royal Mail, APC Overnight and the National Hazardous Pallet Network for our Next Day Delivery Services.
Royal Mail
Orders of up to 2kg will usually be sent using a Royal Mail First Class Service for National Next Day Delivery.
APC Overnight
Orders over 2kg and up to 30kg will be sent using a Fully Tracked Next Day Service using APC Overnight. Some smaller Roofing Kits that weigh up to 30kg in Total would be sent on this service. This includes Resins, Gelcoats and Topcoats which are classed as Hazardous and are decanted into 5kg Tins or Pales to comply with the Transportation of Hazardous Goods Act.
Pallet Network
All our larger orders by weight would usually be sent using the National Pallet Network. Non Hazardous Items can be sent using either the Pallet Network or APC Overnight.
All Hazardous goods over 30kg (which includes Roofing Kits over 30kg in total weight) are usually sent using the National Pallet Network on a Fully Trackable Next Day Delivery Service.
Click & Collect
All orders are eligible for Click & Collect. Pick up your items conveniently from our Cattedown Store, available Monday to Friday between 7:30 am and 4:30 pm (excluding Bank Holidays).
NB - Please note that our Direct Control of the Delivery Element extends to making sure we pick pack and dispatch all orders on time. As we have no Direct Control over the performance of any individual courier we would not be responsible for refunds due to the late arrival of any order.
We always work hard with customers to overcome any issues that arise so please call us if you do have any concerns with regard to tight delivery deadlines so that we can provide great advice if needed.
Please read our Returns policy laid out below.
Under the Consumer Contracts Regulations 2014 you are entitled to return goods within 14 days of delivery for a refund of the cost of the goods. The delivery costs and any packaging are not included in the refund. The returned goods should be in the original containers and unopened. It is the customers responsibility to pay for the cost of returning goods to our Business Premises.
Some of our products are made to order and as such once ordered are non refundable and non returnable. These include coloured gelcoats, topcoats and resins.
These Consumer Regulations do not apply to business purchases (B2B). However we will always help in any way and look to find a suitable and mutually acceptable solution should any issues arise through the order process.
It is the customers responsibility to understand the suitability of the product before its use. Technical and Safety Data Sheets are available for all products where applicable. These can be found on most product description pages or if not are available on request. If you are unsure please do not hesitate to contact us for expert advice and product suitability and application.
To organise a return please contact us on the following.
