{"product_id":"van-aken-protolina-clay","title":"Protolina Clay","description":"\u003cp\u003eModel makers and sculptors need clay that performs reliably without chemical interference. Protolina eliminates the sulfur compounds found in traditional plastilina, making it fully compatible with silicone mold materials that would otherwise cure improperly or fail entirely. This matters when you're investing time and materials into mold construction, sulfur contamination ruins expensive silicone.\u003c\/p\u003e\n\u003cp\u003eThe clay itself maintains plasticity indefinitely without hardening, allowing continuous refinement and adjustment throughout extended projects. Self-adhering properties mean additions bond securely to existing work without mechanical scoring or surface preparation. Ultra-smooth consistency takes fine detail cleanly, from automotive prototypes to jewelry masters requiring precision surface quality.\u003c\/p\u003e\n\u003cp\u003eVan Aken offers three firmness grades to match different applications: softer formulations for quick sketching and form studies, medium for general modeling, firmer for architectural details and structures requiring dimensional stability. Natural white reads clearly under studio lighting for evaluating form and proportion; gray green provides neutral value for photography and presentation. Individual bars, 1 lb. white or 2 lb. gray green, let you stock the specific firmness and color your work demands without purchasing unnecessary variations.\u003c\/p\u003e","brand":"Van Aken","offers":[{"title":"1 in. x 3 in. x 5 5\/8 in. \/ natural soft \/ 1 lb.","offer_id":47977534488805,"sku":"01361","price":4.13,"currency_code":"USD","in_stock":true},{"title":"1 in. x 3 in. x 5 5\/8 in. \/ natural medium \/ 1 lb.","offer_id":47977534521573,"sku":"01362","price":4.13,"currency_code":"USD","in_stock":true},{"title":"1 in. x 3 in. x 5 5\/8 in. \/ natural firm \/ 1 lb.","offer_id":47977534554341,"sku":"01363","price":4.13,"currency_code":"USD","in_stock":true},{"title":"2 in. x 3 in. x 6 in. \/ gray green soft \/ 2 lb.","offer_id":47977534587109,"sku":"04635","price":8.26,"currency_code":"USD","in_stock":true},{"title":"2 in. x 3 in. x 6 in. \/ gray green medium \/ 2 lb.","offer_id":47977534619877,"sku":"04636","price":8.26,"currency_code":"USD","in_stock":true},{"title":"2 in. x 3 in. x 6 in. \/ gray green firm \/ 2 lb.","offer_id":47977534652645,"sku":"04637","price":8.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/6890\/5701\/files\/s01361.jpg?v=1770337614","url":"https:\/\/www.texasart.com\/products\/van-aken-protolina-clay","provider":"Texas Art Supply","version":"1.0","type":"link"}