STR-HNG-L

It takes about
1-2hrs
It costs about
10-20€
Difficulty
Low
License

Structure Hinge Large

BEFORE YOU START

By following the instructions below and/or downloading the linked files you agree to the specified license agreement.

Tools

3d printer

3d printer

Handsaw

Handsaw

Hammer

Hammer

Sandpaper 40 grit

Sandpaper 40 grit

Material

Superglue

Superglue - Gel

PVC tubes

PVC tubes - 1.5m - ø25mm

Coloured Filament

Coloured Filament - PETG

Semiflexible Filament

Semiflexible Filament - 85-98A

Felt

Felt - Self adhesive

Components

Weights

Weights - 1.2kg

O-ring

O-ring

Magnet sphere

Magnet sphere - Ø12 mm

Electronic components

Magnet Sphere - Ø 12,7 mm
Neodymium, chrome-plated
We work hard to keep our links and components list updated, but It might happen that some of the components get discontinued. If you notice any anomalies with one of our components please let us know.

1 Overview

1.1. HNG - Components Scheme

2 Printing

Wise advice

3D printed parts: if you don’t have a 3D printer you can produce the pieces in your local FabLab or order them online.

2.1. HNG - PETG Printing

After downloading the files (3D print section above), print the pieces with the following printing settings:

Printing the base

Nozzle: 1,2mm, for a riffle effect download our Prusa Slicer settings
Material: PETG
Layer height: 0.8 mm

Printing caps, pin and ball-joint:

Nozzle: 0.4 mm
Material: PETG
Layer height: 0.2 mm
Perimeters: 3
Infill: 20%

Attention

WHY A SECOND FILAMENT?

Our hinge is designed with a soft body(semi flex filament 85A) and a hard pin (PETG). They have the perfect friction enabling a smooth movement and sufficient grip. It is essential to use both filaments.

2.2. HNG - Printing Flex

Flexible Hinge:

Nozzle: 0.4 mm
Material: Semiflex Filament (85A - 98A)
Layer height: 0.2 mm
Perimeters: 5

3 Preparation

3.1. HNG-L - Cutting the tubes

Cut the tube into the given length, we recommend the use of a metal saw for a clean cut. Make sure to have a straight cut

Make sure to correct and refine the cut using sand paper and/or a file

Attention

Measures are intended from the edge of the tube to the center of the hole

3.2. HNG - Drilling and sanding

Measure, mark and drill through one side of each tube

Use 100-grit sandpaper or a file to refine the holes

Sand the complete length of the tube using a 220-grit sandpaper, this will optimise the grip of the finishing

Clean the whole surface with rubbing alcohol and a soft cloth

4 Assembly

4.1. HNG - Placing the Semiflex Pin Holder

Insert one semiflex plug into tube A and match it with the hole

4.2. HNG - Tubes Connection

Push manually the pin into the hole into the second tube rotating a bit while applying pressure until the tubes almost touch

Attention

Be careful not to damage the finishing!

Perform this action on soft cloth

4.3. HNG - Hammering in the Pin

Gently hammer the pin into the semiflex plug, leaving half of it outside.

Warning

BE CAREFUL WHILE HANDLING LEAD

Use protection gloves, don’t touch your mouth and eyes while touching lead and wash your hands carefully when finished. We strongly recommend putting the lead inside a zip lock bag to prevent particles from exiting the base when finished

4.4. HNG - Inserting the lead inside the base

Insert the lead into the base, through the hole. Use about 1,2kg. making sure your base is stable enough.

4.5. HNG - Making of the base

Cut a circle of the self-adhesive felt, and center it at the bottom of the base. Make sure to have ca.10mm between the edge of the felt and the base.

Attention

Make sure the glue stays on the outer side of the edge

It must not touch the magnet or its housing. Apply some pressure and let dry for at least 15min

4.6. HNG - Glueing of the magnet ball joint

Place the magnet into the joint body.

Apply carefully small amount of superglue (ideally gel) over the rim of the body.

Carefully position the cap ontop of the body, pressing the pieces together to ensure proper bonding .

Slide the o-rings onto the upper and bottom slots.

If more friction is needed use a 3rd one in the middle slot.

Attention

 

If it is stuck improvise to free it (i.e. with a thin pencil through the body bottom).

If it does not work try to gently remove the cap and repeat the operation.

4.7. HNG - Checking the magnet ball joint

Is the magnet free?

Shake the magnet-ball joint and make sure that the magnet is free inside.

 

Wise advice

If the caps slide too easily out of the tubes, use tape around the cap edges catering for the right friction.

Wise advice

Be careful when putting the pieces together, make sure not to damage the finishing of the pieces.

If the tube is covered with foil insert the tube by turning it a bit until the bottom of the base.

If the tube is painted apply some pressure to widen the sides of the base close to the top, slide the tube inside and leave the sides gently.

4.8. HNG - Final Assembly

5 STR-HNG-L is ready!

STR-HNG-L