# Bill of Materials ## Servo - MG92B Servo is the key component. I use TowerPro [MG92B](http://www.towerpro.com.tw/product/mg92b/). It has metal gear (important!). An hexapod requires 18 of them. > The dimension of 3d printed part is highly depended on servo's dimension.
> Modification is required if you want to use other alternative servo. > TowerPro MG92B can be found on Ebay seller [servohorns959](https://www.ebay.com/usr/servohorns959), which is listed on TowerPro official website ([Link] (http://www.towerpro.com.tw/about-us-2/)).
I also got mime servo from him. ## 3D-Printed Parts ### Body x 1 Filename | Thumbnail | Required | -------- | --------- | -------- | body_top | ![body_top](files/body_top.jpg) | 1 | body_bottom | ![body_bottom](files/body_bottom.jpg) | 1 | body_center | ![body_center](files/body_center.jpg) | 1 | body_side_wall | ![body_side_wall](files/body_side_wall.jpg) | 2 | body_back_wall | ![body_back_wall](files/body_back_wall.jpg) | 1 | ### Leg x 6 Filename | Thumbnail | Required | -------- | --------- | -------- | thigh_top | ![thigh_top](files/thigh_top.jpg) | 1 (x6) | thigh_bottom | ![thigh_bottom](files/thigh_bottom.jpg) | 1 (x6) | joint_cross | ![joint_cross](files/joint_cross.jpg) | 1 (x6) | joint_top | ![joint_top](files/joint_top.jpg) | 2 (x6) | joint_bottom | ![joint_bottom](files/joint_bottom.jpg) | 2 (x6) | leg_top | ![leg_top](files/leg_top.jpg) | 1 (x6) | let_bottom | ![leg_bottom](files/leg_bottom.jpg) | 1 (x6) | foot_top | ![foot_top](files/foot_top.jpg) | 1 (x6) | foot_bottom | ![foot_bottom](files/foot_bottom.jpg) | 1 (x6) | foot_ground | ![foot_ground](files/foot_ground.jpg) | 1 (x6) | foot_tip | ![foot_tip](files/foot_tip.jpg) | 1 (x6) | ## Others Name | Spec | Thumbnail | Required | Note ---- | ---- | --------- | -------- | ---- Screw | M2 6mm | ![6mm](files/M2_6mm.JPG) | 54 | Servo Arm: 1 x 18
Joint: 4 x 6
Thigh: 2 x 6 Screw | M2 10mm | ![10mm](files/M2_10mm.JPG) | 24 | Thigh: 1 x 6
Pin lock: 1 x 18 Screw | M2 30mm | ![30mm](files/M2_30mm.JPG) | 36 | Servo: 2 x 18 Nuts | M2 | ![6mm](files/M2_nut.JPG) | 36 | Servo: 2 x 18 Pin (304) | M4 6mm | ![pin](files/pin_M4_6mm.JPG) | 18 | Servo: 1 x 18