I used to make drink coasters out of 1/4″ cotton sash cord. Because of the decline in use of double hung windows and their sash weights, sash cord is now uncommon, and thus expensive. In trying to make a proper drink coaster out of paracord, I have made many weak and floppy knots. The ones I made by working the tightened knot into a U shape were tight and strong, but the decrease in diameter was a problem. The other day I was tying knots as I watched TV. When I inverted the Pineapple knot I had made, it worked and worked well. The interweave meant that the knot was not only doubly thick but that the cords filled up the interstices in each knot. When I worked it down to a coaster shape it made a firm, thick platter. If I were going to do it again to make a coaster for general use, I would start off with a Turk’s Head having more leads, whick would increase the diameter to about 4″, a fair size for most coasters. You could also dress this up greatly by putting in another interweave similar to those in most heel knots. The multi-colored and tight weave would be both bold and attractive. The only caution I would offer is to make the original knot either looser than normal, or maybe in a funnel shape. Trying to invert this knot offered more challenge than most Turk’s Head knots for the same reasons it makes a better coaster: it is double thickness and the gaps are pre-filled before you even start.
I would like to hear from you if you try this coaster idea; the more information shared the better. Thank you for visiting my site, come back again: