Regarding cordage -
It's been a long time since I've rigged a good-sized ship model. The most recent three (more years ago than I care to acknowledge) I rigged with silk thread, which in those days was relatively easy to find at good sewing stores. I could only find two sizes of it; I made most of the rope I used on the actual models with my primitive "rope-making machine." That was an extremely crude contraption I made out of parts from an old Erector set. It was in two parts, the "whorls" and the "spinners." I clamped each of them to a sawhorse, so I could put them at any distance apart for longer or shorter ropes. (For the topgallant backstays of the Soleil Royal, as I remember, I had to put the sawhorses on the opposite sides of our basement. As rope is spun up it gets shorter.)
One great advantage of making your own rope is that you can make it in just about any size you want. A real ship had rope in dozens of diameters. I won't claim I made that many different sizes for the Soleil Royal, Bounty, or Hancock, but I made at least a dozen - black and brown.)
Employment, marriage, stepkids, and illness kept me away from large ship modeling projects for a long time. I did build the Model Shipways pilot schooner Phantom a few years ago. (At that time Model Expo was selling the kit with a resin hull. I really liked it.) The rigging of that ship doesn't amount to much. I used Model Shipways' "cotton-poly mix," which I liked. It really does look like rope (though a little shiny), and it's held up well since I finished the model.
Nowadays it's harder to find silk thread. (I've googled "real silk thread," and it can be bought, all right, but I haven't had occasion to order any.)
My current model, a Gloucester fishing schooner, is going to need quite a bit of rigging (though not as much as a full-rigged ship). I've got quite a stock of Model Shipways stuff (bought when Model Expo put it on sale for ridiculously low prices), and some from Cottage Industries. Both look more than acceptable to me.
But I'm really interested in the newly-available cotton/linen line from Syren Ship Model Company. In the photos it looks superb, and I've read lots of positive comments on it here in the Forum. I'm going to order some in a few minutes.
Only one thing bothers me about the Syren line. In the pictures it appears that most of the sizes are cable-laid (i.e., spun up left handed). If you're really into such things, that matters. (Hold a piece of the line vertically, and look at the strands. If they go up to the right, they're hawser-laid. If they go up to the left they're cable- laid. Here's a link to a good picture: http://www.sweethaven02.com/BldgConst/Bldg02/fig0302.jpg ) .Nowadays almost all rope that's sold for ship and boat rigging is hawser-laid. But in the seventeenth, eighteenth, and early nineteenth centuries much of the standing rigging of ships was cable-laid, while the lighter standing rigging lines and all the running rigging was hawser-laid. (There was a third kind. Shroud-laid rope consisted of three strands of cable-laid line spun up right-handed. Three cable-laid strands making a hawser-laid finished product.
If you make your own rope, you can control that - simply by cranking in opposite direction. In this picture of the Hancock you can see that most of the standing rigging is cable-laid and the running rigging is hawser-laid: http://i1360.photobucket.com/albums/r650/jtilley1/38890018_zps8e2d375f.jpg .
How much does this matter? That, as always, is up to the individual modeler. When I learned (from R.C. Anderson and C.N. Longridge) how to make my own rope, I got fascinated by it, and had a lot of fun with it. (I admit I got sick and tired of turning those little cranks, but Cincinnati Reds radio broadcasts helped a great deal.)
I'm going to ask Mr. Passaro if his rope-making machine can spin lines in both directions. It would be great if both hawser-and cable-laid rope were conveniently available. All the rigging of my current project needs to be hawser-laid. But I've got a late-eighteenth-century brig next in line....
Later: Just ordered seven packages of Syren line - along with a query as to whether Mr. Passaro can supply both hawser-laid and cable-laid. Will be back when it comes, which I'm sure will be quite soon.
Still later: Mr. Passaro got back to me with an answer to my question within a couple of hours. The two smallest sizes of line he offers are hawser-laid; the larger ones are all cable-laid. That makes the smaller ones appropriate for running rigging and the larger ones for standing rigging. If you need bigger running rigging (for jeers, halyards, etc.) it shouldn't be difficult to spin the smaller sizes up into bigger hawser-laid rope.