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Making Joints from Silicone Tube
A reference for using various thicknesses of silicone tube to join carbon rods.
This guide shows what thicknesses of carbon rod can be joined by each thickness of silicone tube.

Types of Joints
In-Line Joint
The in-line joint holds two
pieces of carbon together
such as the ends of a loop.
T-Joint
With this joint, the silicone
tube bridges two separate
pieces of carbon rod to hold
them together.
Cross-Joint
This joint is the same as the
T-Joint but one piece of
carbon goes behind the other.
Cross-Joint Combined
In this joint both pieces of carbon pass through the hole in the middle of the silicone tube and press against eachother.

A special note on 0.25mm Carbon T-Joints
Carbon rod which is 0.25mm in diameter can’t be joined using a T-Joint with silicone which has a 0.3mm hole in it
because it will not hold firm. For 0.25mm carbon rods, use the silicone covering from 28AWG Silicone Wire.

A thin ring can also be cut from silicone tube to make the cross joints shown below.
Using 0.25mm carbon and the silicone casing from 28AWG wire





Silicone Tube Reference
The guide below shows exactly which thicknesses of carbon rod can be joined with each type of silicone tube.

   
   
Silicone Tube 0.3mm x 1mm
In-Line Joint - using 0.25mm carbon rods
silicone tube


T Joint - using 0.5mm carbon rods
silicone tube

Cross Joint - Using 0.25mm or 0.5mm Carbon rods
(In this type of joint one carbon rod passes behind the other)
silicone tube

Cross Joint Combined - using 0.25mm carbon rods
(In this type of joint both carbon rods pass through the inner hole of the silicone tube)
silicone tube

Cross Joint Combined - using 0.5mm carbon rods
(In this type of joint both carbon rods pass through the inner hole of the silicone tube)
silicone tube
   
   
   
Silicone Tube 0.5mm x 2mm
In-Line Joints - This silicone tube is suitable for in-line joints with carbon rods from 0.5mm to 0.8mm in diameter.

In-Line Joint - using 0.5mm carbon rods


In-Line Joint - using 0.8mm carbon rods


T Joint - using 0.8mm carbon rods
(suitable for rods 0.6mm to 0.8mm in diameter)


Cross Joint - Using 0.8mm carbon rods
(In this type of joint one carbon rod passes behind the other)
(suitable for rods 0.6mm to 0.8mm in diameter)


Cross Joint Combined - using 0.5mm carbon rods
(In this type of joint both carbon rods pass through the inner hole of the silicone tube)
(suitable for rods 0.5mm to 0.8mm in diameter)


Cross Joint Combined - using 0.8mm carbon rods


A thin ring can also be cut from silicone tube to make the cross joints shown below.
Using 0.25mm carbon and 0.5mm x 2.0mm silicone tube


Using 0.25mm carbon and 0.5mm x 2.0mm silicone tube
   
Silicone Tube 1mm x 2mm
In-Line Joints - This silicone tube is suitable for in-line joints with carbon rods from 0.6mm to 0.8mm in diameter.

In-Line Joint - using 0.8mm carbon rods


T Joint - using 1mm carbon rods
(suitable for rods 1mm to 1.2mm in diameter)


Cross Joint - Using 1mm carbon rods
(In this type of joint one carbon rod passes behind the other)
(suitable for 1mm rods only)


Cross Joint Combined - using 0.8mm carbon rods
(In this type of joint both carbon rods pass through the inner hole of the silicone tube)
(suitable for rods 0.5mm to 0.8mm in diameter)
Silicone Tube 1mm x 3mm
In-Line Joints - This silicone tube is suitable for in-line joints with carbon rods from 0.8mm or 0.9mm in diameter.

In-Line Joint - using 0.8mm carbon rods


T Joint - using 1.2mm carbon rods
(suitable for 1.2mm diameter carbon rods only)


Cross Joint - Using 0.8mm carbon rods
(In this type of joint one carbon rod passes behind the other)
(suitable for 0.8mm to 1mm carbon rods)