diff --git a/src/mol-geo/geometry/lines/lines-builder.ts b/src/mol-geo/geometry/lines/lines-builder.ts
index ac9d7a94f8a27b13f6bb30f77c111fb4c7752279..70d994dbbed725b91fb0a01836df7b5759ce7ec1 100644
--- a/src/mol-geo/geometry/lines/lines-builder.ts
+++ b/src/mol-geo/geometry/lines/lines-builder.ts
@@ -16,8 +16,8 @@ export interface LinesBuilder {
     getLines(): Lines
 }
 
-const tmpA = Vec3.zero()
-const tmpB = Vec3.zero()
+const tmpVecA = Vec3.zero()
+const tmpVecB = Vec3.zero()
 
 export namespace LinesBuilder {
     export function create(initialCount = 2048, chunkSize = 1024, lines?: Lines): LinesBuilder {
@@ -47,11 +47,11 @@ export namespace LinesBuilder {
             addCage: (t: Mat4, cage: Cage, group: number) => {
                 const { vertices, edges } = cage
                 for (let i = 0, il = edges.length; i < il; i += 2) {
-                    Vec3.fromArray(tmpA, vertices, edges[i] * 3)
-                    Vec3.fromArray(tmpB, vertices, edges[i + 1] * 3)
-                    Vec3.transformMat4(tmpA, tmpA, t)
-                    Vec3.transformMat4(tmpB, tmpB, t)
-                    add(tmpA[0], tmpA[1], tmpA[2], tmpB[0], tmpB[1], tmpB[2], group)
+                    Vec3.fromArray(tmpVecA, vertices, edges[i] * 3)
+                    Vec3.fromArray(tmpVecB, vertices, edges[i + 1] * 3)
+                    Vec3.transformMat4(tmpVecA, tmpVecA, t)
+                    Vec3.transformMat4(tmpVecB, tmpVecB, t)
+                    add(tmpVecA[0], tmpVecA[1], tmpVecA[2], tmpVecB[0], tmpVecB[1], tmpVecB[2], group)
                 }
             },
             getLines: () => {
diff --git a/src/mol-geo/geometry/mesh/mesh-builder.ts b/src/mol-geo/geometry/mesh/mesh-builder.ts
index 742f41e719a5114e7b0862e61f3816086b79d89e..4ebb531123d1916f421c6b3b318a422af60ce3d8 100644
--- a/src/mol-geo/geometry/mesh/mesh-builder.ts
+++ b/src/mol-geo/geometry/mesh/mesh-builder.ts
@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2018 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ * Copyright (c) 2018-2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
  *
  * @author Alexander Rose <alexander.rose@weirdbyte.de>
  */
@@ -10,9 +10,14 @@ import { ChunkedArray } from 'mol-data/util';
 import { Mesh } from './mesh';
 import { getNormalMatrix } from '../../util';
 import { Primitive } from '../../primitive/primitive';
+import { Cage } from 'mol-geo/primitive/cage';
+import { addSphere } from './builder/sphere';
+import { addCylinder } from './builder/cylinder';
 
 const tmpV = Vec3.zero()
 const tmpMat3 = Mat3.zero()
+const tmpVecA = Vec3.zero()
+const tmpVecB = Vec3.zero()
 
 export namespace MeshBuilder {
     export interface State {
@@ -55,6 +60,20 @@ export namespace MeshBuilder {
         }
     }
 
+    export function addCage(state: State, t: Mat4, cage: Cage, radius: number, detail: number) {
+        const { vertices: va, edges: ea } = cage
+        const cylinderProps = { radiusTop: radius, radiusBottom: radius }
+        for (let i = 0, il = ea.length; i < il; i += 2) {
+            Vec3.fromArray(tmpVecA, va, ea[i] * 3)
+            Vec3.fromArray(tmpVecB, va, ea[i + 1] * 3)
+            Vec3.transformMat4(tmpVecA, tmpVecA, t)
+            Vec3.transformMat4(tmpVecB, tmpVecB, t)
+            addSphere(state, tmpVecA, radius, detail)
+            addSphere(state, tmpVecB, radius, detail)
+            addCylinder(state, tmpVecA, tmpVecB, 1, cylinderProps)
+        }
+    }
+
     export function getMesh (state: State): Mesh {
         const { vertices, normals, indices, groups, mesh } = state
         const vb = ChunkedArray.compact(vertices, true) as Float32Array