First cut a length of thick thread. I use black 'button and carpet' thread for all but the smallest blocks. Cut enough to not only strop the block, but also to give you ends to easily work with. I find that 6-8 inches is usually plenty. Most of that gets cut off when the deed is done.
Next, wax the thread thoroughly. 5-4 full length swipes across a piece of bee's wax - end to end. Take the waxed thread and slowly draw it across a hot light bulb - one that's turned on. That will melt the wax into the thread. Then give the thread 4-5 more swipes across the bee's wax. The thread is ready to use. All that thread waxing helps take the curl out of the thread, controls the frizzies on the thread, and also makes it just slightly tacky, the better get it to stay where you put it.
Tie the eyebolt onto the middle of the thread. A square knot will do the trick. Snug it down tight.
Hold the eye bolt between thumb and forefinger of your 'weak' hand with the thread ends drooping down - kind of like a miniature banana. Then use your strong hand to set a block on the eye bolt knot. Set the end of the block closest to the hole for the rigging line on the eye bolt knot. Draw the loose ends of the thread up the sides of the block in the stropping grooves, pinching them in place with your 'weak' hand thumb and forefinger. Tie the threads in a second square knot on the exposed end of the block, snugging it tight after the first overhand portion of the of the knot and before completing the second part of the knot. Yes, you CAN tie a square knot with one hand!
Touch a small, pin head sized drop of CA glue to each knot, give it time to set, and then clip off the ends with a nail clipper or your favorite sharp cutting tool. You'll have a nicely stropped block with tight fitting line that'll look a bit more realistic than does twisted up wire. [BTW, Model Shipways sells blocks of several sizes already stropped with wire. They can be purchased from Model Expo.]
It takes longer to read this blow-by-blow description than it takes to actually do the deed - especially after you've done a few and gotten the hang of it. I find it takes longer to wax up the thread than it does to actually use it to strop the block.
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