I googled and googled and don't know much more than I did. I am waiting for the user-friendly explanation you will provide after you try it!
I have high hopes for a great new product.
Laura

By Googling, I learned that Harbourite is a virgin polypropylene fiber. Does that mean I can put one of my husband's polypro shirts in the blender and, voila!, Harbourite? BTW, I just bought a bag of glass fiber angel hair that I thought I'd slice 'n dice and see how that works. I have no idea how much to use though. Guess that's what trial and error is all about.

Laura-try www.tapex.com for access to the site.Like Fleur says,it's a virgin's world there!
Cheers from here

Rick, what does Harbourite look like. Is it short thread-like stuff or continuous fibers like angel hair, powdery or none of the above. I tried googling an image and did see one that resembled the angel hair I just bought. (BTW - My husband won't give up one of his shirts, even in the interest of science.)

Sorta like angel hair,without the itchiness!I'll be trying it on saturday.
cheers from here

The angel hair I bought is called Angel Cloud, softer and fluffier, less irritating to the hands and easier to pull apart spun glass. I wonder if it's similar to what you have. Comparing it to a hair I just pulled out, it seems finer than a human hair. (And not blonde.) How are you going to incorporate it into your mix?

Just a note. There are so many different "glass" & "Poly" fibers these days (not to mention "Brands") that they are hard to keep up with. Just remember above all else that if you intend to use them in any cement-based mixture they absolutely MUST be Alkali-Resistant. Some are labeled that way and others are not, so it's best to verify before investing/embedding.

Tango88 -- If the purpose of the hair I bought was not intended for cement mixes but rather for Christmas decorations, how would I tell if it is alkali-resistant. The package does say it is spun glass. I feel I'd have to try it but don't know what result I should check for if it's not alk-resist or how I could tell if it were resistant. Any ideas?

Hi Rick,
I just held a match to both my angel hair and the mesh fibers I got at the local cement plant. They both melted. Does your harbourite melt when subjected to a flame? Just wondering.

Haven't tried as yet.I know I can't burn my detail mesh;tried that.And,when you finish doing a project,you see recommendations on other threads and instructions to burn off the fibremesh that sticks out.Done that with a torch.
So,at a guess:It'll burn,baby,burn!!
Cheers from here