Fossil Replica Materials: Resin, Fiberglass and Where Each Fits | 化石复制材料：树脂、玻璃钢各自适合什么场景

Detail versus structure

Resin captures fine surface detail faithfully and finishes cleanly, which is why small bones, teeth and delicate features are usually cast in it. Fiberglass is lighter and tougher, so it carries long limb elements, ribs and anything that will be suspended or move.

Weight changes the whole design

A solid resin femur can weigh several times its fiberglass equivalent. That weight travels through the armature, the anchors and the transport crates. Choosing fiberglass for load-bearing elements often reduces cost downstream more than it adds at the casting stage.

Surface finish is a process, not a property

Both materials can look convincing, but they need different preparation. Resin tolerates fine sanding and sharp detail; fiberglass needs careful gelcoat work and seam filling. The skill of the finishing team matters more than the material label.

Where each material fits

Study collections, handling sets and small display pieces favour resin. Large mounted skeletons, touring exhibitions and outdoor installations favour fiberglass. A single skeleton commonly uses both, chosen element by element.

What to specify

Ask for the material per element, the expected weight, the finish standard and the repair method. A replica that cannot be repaired locally becomes a liability once it is installed far from the workshop.

DinoCG selects replica materials element by element, so weight, detail and repairability are balanced for how the skeleton will actually be used.

Chinese Version

细节与结构的分工

树脂能忠实还原表面细节，后道处理也干净，所以小骨、牙齿和精细结构多用树脂。玻璃钢更轻更韧，因此承载长骨、肋骨，以及需要悬挂或运动的构件。

重量会改变整个设计

实心树脂股骨可能比玻璃钢版本重好几倍，这份重量会一路传到钢架、锚固件和运输木箱。在承重构件上选玻璃钢，往往在后端省下的成本超过翻制阶段多花的钱。

表面是工艺，不是材料属性

两种材料都能做得很像，但处理方式不同。树脂能承受精细打磨和锐利细节；玻璃钢需要仔细的胶衣处理和接缝填补。后道团队的手艺，比材料标签更重要。

各自适合什么

研究藏品、可上手接触的套装和小型展件适合树脂。大型装架骨架、巡展和户外安装适合玻璃钢。同一副骨架常常两者混用，逐件选择。

采购要写清楚什么

要求按构件列明材料、预估重量、表面标准和修复方式。无法就地修复的复制品，一旦安装在远离工厂的地方，就会变成负担。

DinoCG 按构件选择复制材料，让重量、细节和可修复性围绕骨架的真实使用方式来平衡。