Hi Marc,
Cutting Dyneema (or any HMWPE line) is not easy - bolt cutters won’t touch it, nor will the cutters used for SS cable. Serrated knives are not effective, though a good, new razor knife will do. The absolute best would be a pair of “kevlar scissors” also used for fibre-optic cable and they work a treat on Dyneema. I own 3 pair and the only trick is you have to keep them away from salt exposure as they are VERY hard steel (not stainless!).
Hartley
S/V Atsa