Knuckle Assembly

Materials

Tools

• Tweezers

• 1.5 mm Allen Key

3D Printed Parts

Part Name	Total Quantity
Assembled Finger	3
Assembled Pinky	1
Tophand Index + Middle	1
Tophand Pinky + Ring	1

Hardware (Total)

Part Name	Total Quantity
Dowel	4
M2 x 4 mm Screws	9
Extension Springs	4

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Instructions

Video for Single Finger Attachment

This video shows how to attach one finger. The process is identical for the other three fingers, with the shorter pinky going on the outer knuckle of Tophand Pinky + Middle Part.

1. Attach Spring

Part Name	Quantity
Extension Spring	4
M2 x 4 mm Screws	4
Tophand Index + Middle	1
Tophand Pinky + RIng	1

Tophand Index + Middle	Tophand Pinky + RIng
x 2 - M2 x 4 mm Screws	x 2 - M2 x 4 mm Screws
x 2 - Extension Spring	x 2 - Extension Spring

2. Route String and Insert Dowel

Part Name	Quantity
Dowel	4
Tophand Index + Middle	1
Tophand Pinky + RIng	1
Assembled Finger	3
Assembled Pinky	1

Routing the strings:

Before inserting the dowels, route the two strings into the n

Tophand Index + Middle	Tophand Pinky + Ring
2 Assembled Fingers	Assembled Finger and Assembled Pinky
x 2 - dowels	x 2 - Dowels

3. Secure Spring

Part Name	Quantity
M2 x 4 mm Screws	4
Index + Middle Knuckle Assembled	1
Pinky + Ring Knuckle Assembled	1

Index + Middle Knuckle Assembled	Pinky + Ring Knuckle Assembled
x 2 - M2 x 4 mm Screws	x 2 - M2 x 4 mm Screws

At this point, you should have two assembled knuckle pieces, each with two fingers.