Can I combine the Heirloom Wax?

NO (and yes).

Your Heirloom Wax has been carefully weighed and rolled in accordance with the Casting Type that your kit was purchased with. By combining the wax you are changing this wax weight, and we will require more metal to manufacture.

Whilst you can combine the wax to be heavier and larger, you will have to pay an Overweight Surcharge to cover the additional metal required to complete your casting. This cost also covers the higher casting price for casting larger items. This surcharge is calculated based on the weight of the wax we receive. Once we receive your wax, you will be sent a link to complete the surcharge payment.