pran, on 2013-December-28, 02:52, said:
I have been supplying machine-dealt boards since 1990 with the same boards being re-dealt and used about 50 times a year. We have an absolute rule that my customers may never shuffle and deal boards manually. My experience is that I shall have to replace boards after some 20 to 25 years, and I believe other suppliers of machine dealt boards have similar experiences.
Compare that to the expected life of cards in clubs where they shuffle and deal cards manually for each event, they typically have to replace their cards each year or so.
So whatever event, Swiss or otherwise, my customers receive and use machine-dealt boards for the complete events. In the long run that pays off for everybody.
In this neck of the woods we have the PlayBridge duplicating machine that reads not barcodes but the actual card corners. We also have a supplier who makes excellent aluminum boards and supplies decent plastic cards. I am told that the process is faster with the flip-top boards but I have never used one. But the supplier takes the same 20-40 sets around to various week-long tournaments in the area, perhaps 15-20 in a year, and thus they are used much more than 50 times a year. Most ACBL regional tournaments will see each set used at least ten times over the course of 18 sessions in seven days.
I would guess that the cards should be replaced about once every 12-18 months, but this doesn't happen and I spend the first day of every tournament doing two things simultaneously: preduplicating the first 3-4 sessions worth of needed sets (for pair games only, not Swiss or KO), and removing the older cards that the machine has trouble identifying, and putting these into board sets that will be assigned to the KO area of the room for most of the week.
I know that in Europe and other non-ACBL areas preduplicated boards are expected, but at the largest regionals here I sometimes make 20-25 sets of boards (1-36 usually) for one day's pair events alone, and this is only half of the people who play: the KO and Swiss events are about the same number of tables. To cover all of them we would need multiple machines and operators. We would also need to teach players and caddies the procedures used where predupes are available for KOs and Swisses, which is something that ACBL players do very poorly (since it would involve listening and following instructions instead of doing it the way we did it in 1958). For the final A/X Swiss I often make five sets of 32 boards for the top ten teams in the Flight A event, so that the top ten teams* can have preduplicated boards. I'm guessing that in Norway, five sets of eight would cover twenty tables (ten matches), each table getting two to start with and pass down a table when done. Here the TDs insist on each match having its own set of boards, because the players would never figure out such an unusual system.
*Another interesting problem is that ACBLScore matches teams on the fly, before all results are in, and the TDs actually have to guess what VP Score will put a team into the top ten, meriting predupes!
With the PlayBridge machines, and I guess the newer Jannerstens that read the indices instead of the bar codes, the biggest problem with cards becomes fading indices. A missing speck on a spade symbol can make it look like a club or even a diamond (the optical reader does not see colour). Much of the time the card works with a 180 switch, but when you have three or more such cards in a deck, the time it takes goes way up. I think the machines would be much better if they had two optical readers, one for each corner, the second one being used if the first read was doubtful.