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Hi;
Here are two suggestions. Get a series of brass rods, starting at 3/8" of an inch and then descending in order down to very fine. If using card, place the part on your leg above the knee. Using the largest rod roll it over the part to break the fibers and induce a gentle roll. Work gradually down to the thinnest rod. It takes a while to get the hang of it, but you can roll a pretty long tube successfully. This works for rolling paper as well. The cost of the brass rods is marginal and they will last for years. The second suggestion is to obtain a package of bamboo teriyaki skewers. They can be split lengthwise with a number eleven blade, down to hair wide diameters. They can also be sanded, or drawn, easily to round off. They are light, very strong, and can be easily painted. You can insert them inside a rounded tube to keep it straight, or used as is. Granted, the enclosed scratch built model isn't the best build that you have ever seen, but much of the mast and antenna work was done this way. The model is 1/192 scale, a little over 23 inches in length.
Regards, rjccjr
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