RECOMMENDED PRINT SETTINGS

• Material: PETG
• Layer Height: 0.2 mm
• Wall Count: 4
• Infill Density: 30–40%
• Supports: Not required for most parts

Print the base flat on the build plate. Position the jaws with their bottom surfaces facing the build plate.

Do not use plastic components in direct proximity to the hot soldering iron tip, especially around the clips and articulated arms.

FILES AND QUANTITIES

base.stl – 1×
jaw.stl – 2×
link70.stl – 4×
link50.stl – 4×
pedestal.stl – 4×
spacer.stl – 4×
washer.stl – 8×
clip_mount.stl – 4×

MECHANICAL ASSEMBLY

PCB Clamping Jaws:

• 4× M4 screws (length depending on the nuts and washers used)
• M4 nuts and washers

Articulated Helping Hands:

Each arm consists of:

• A mounting point through a corner hole in the base
• Two flat articulated links connected using M4 screws
• An end-mounted clip holder

Approximately 16–20 M4 screws, nuts, and washers are required for the complete assembly. Select screw lengths according to the actual assembled components.

Wing nuts are recommended for easy manual adjustment.

Alligator Clips:

• 4× metal alligator clips
• The mounting method depends on the clip type.
• The clip_mount.stl component includes a 3.2 mm transverse mounting hole.

HARDWARE PURCHASING SUMMARY

For convenience, the following quantities provide a practical starting kit:

• 20× M4 screws in assorted lengths (16, 20 and 25 mm)
• 12× M4 hex nuts
• 12× M4 wing nuts
• 40× M4 flat washers
• 8× M4 spring washers (optional)
• 4× M3 screws, 12 mm long
• 4× M3 hex nuts
• 8× M3 flat washers
• 4× metal alligator clips
• 4× silicone clip-cover sets
• 4× rubber feet
• PETG filament, approximately 250–500 g available for printing and test parts

Note: These are purchasing allowances rather than a verified bill of materials. The final quantity of fasteners depends on the exact joint configuration and printed-part tolerances.

ASSEMBLY NOTES

Ensure that all articulated joints move smoothly and can be securely tightened.

Check the fit of all screws, nuts, and washers before final assembly.

Keep all 3D-printed components away from direct contact with the hot soldering iron tip.