I finished wrapping a rod and after the first coat of ProKote the threads look to have discolored. They were a purple color, but parts of them are now much darker (almost black). I used two coats of of Brilliance CP and let the rod sit for a week while I waited for the ProKote shipment to arrive. Everything looked good before using the ProKote, but now it's discolored. Any ideas on what I did wrong, or how I can avoid this problem in the future? Thanks in advance.

Richard,
Your problem sounds very much like the color preserver did not completely penetrate and cover the threads. I haven't used the Brilliance CP, but I did run into this problem with my first use of another brand, a very thin, clear, solvent based CP on silk. I did a test wrap series (2,3,4,5 & 6 coats) to find out how many coats it would take (firmly locking the barn door after the horse was stolen!) - the mfr. said two, but I didn't get good protection until after 4 coats. The cure for me was, after cutting off all the wraps and rewrapping, to flood the guide foot tunnels, especially on the first coat, and to use 5 coats total - that eliminated the streaking and blotching of the thread. Hope this helps.

I would use another CP

Bill - willierods.com

Sounds to me more like an issue of not enough packing. If this is the case, no matter how much CP you put on you will still have the darkness of the blank showing through.

Try a wrap on a piece of scrap but Pack tighter After the first coat of CP and it sets or drys the second coat is kind of laying on top so IMHO the first should be a nice wet coat Usually two is enough
I usually put a good wet coat on Wait till I see the thread soak it up then another Let it all dry over night.

Bill - willierods.com

Richard,
It sounds like the thread is doing exactly what I would like thread to do.
I never use CP unless it is absolutly demanded by the client. I very much prefer the darker semi transluscent look that you get from not using CP.

I tend to think that the use of CP makes the wraps look somewhat pasted on the rod.

Everyone has the look that they like so if you like to use CP, go for it. If not, don't.

Take care
Roger

I tend not to use Cp as i prefer to use NCP thread. i "water" down my epoxy with methylated spirits for the first coat, that way it soaks through the treads to the blank. i find that you will not get those odd epoxy splits at the guide feet. also greatlly reduces bubbles.
so if you don't want the epoxy to leak like roger likes than just use NCP thread.
tight lines and happy wrapping