We had strict guidelines to follow: no more than 50 toothpicks, only "woodglues" so only PVA's and aliphatic resin emulsion, and other various building restrictions.
I decided on Titebond 2 for the glue to use on this, Titebond seems to be the leading developer of glues and this product was best for this instance. http://www.newwoodworker.com/reviews/titebond.html that site helped a lot in deciding which glue to decide on.
Basically my bridge is two beams of interlaced toothpicks, very simple and they seem to be strong. The construction of each beam is 5 toothpicks interlaced halfway on the other and a 6th toothpick, broken in half, to fill in the gap. Do that 2 more times and glue those together. At this point I put all of that in my table vice to apply even pressure. Then I made another. These will be placed over the 15cm gap and a block that the weight is mounted to will keep the two in place, or so I hope.
I'm hoping my simplicity wont cause me to fail this whole project but if it does, I will have learned a lot, and in the end that's what really matters. Or so I'm told... The goal is to have the highest efficiency, the weight carried divided by the weight of the bridge. Results will be reported on Tuesday.
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