Join 2 lengths of Dyneema...

1. Trim the end of each length of line to be joined and heat seal to prevent fraying
2. Thread the sleeving needle through the hollow centre of the cut sleeving length

3. Thread one end of your line through the loop at the end of the sleeving needle

4. Pull the needle back through the sleeving pulling the end of the line with it until 1cm of line shows
5. Repeat for the other length of line
6. Tie a simple overhand knot in the sleeving and line for each length

7. Thread the sleeving needle through one length of sleeved line as shown below

8. Using the needle thread one sleeved line through the second as below

9. Thread the second sleeved line through the first as below...

10. Pull the two lengths tight as shown below and knot each end