Splitting Threads

[Izaak]

What threads are best to use for the split thread dubbing technique?

[Mataura mayfly]

Ones that are not single ply!

I have found (just my opinion mind) Danville thread about the easiest, but it depends if you are talking silk or synthetic threads for the purpose.
Any multi strand, in particular those that can be made to "flatten" out can be bodkin spit fairly easily.
Hans shows a great way of doing the split in a lot of his videos, indeed I think he posted a specific thread splitting video somewhere on here you may be able to search for. If you can untwist, flatten and then lift the tension off the thread you can usually insert a bodkin point in there somewhere to form the split. If using silk be careful not to cut the strands when pushing the bodkin tip through.

[DUBBN]

I do well with UTC70, and Bennechi

[Ron Eagle Elk]

I've used that technique with Danville's, Gordon Griffith's Sheer and Veevus. Just getting to try the Veevus and like it so far.

[William Anderson]

Tom, I've only used the technique with Griffiths 14/0 sheer, and Pearsall's Gossamer, but these both were simple to split...after seeing Hans do it a number of times.

w

[DUBBN]

I am waiting for my flyshop to get some Veevus in. I am anxious to try it. I did a size 18 with the Sheer 14/0 last weekend. Seemed to work just fine.

[Old Hat]

I do it with Pearsall's all the time. I have split Griffith's 14/0 quite a bit but usually just use a dubbing loop since build-up is usually not a problem. Unwind the Pearsall's before you try to split it. Also, it unwinds the opposite direction of most threads.