eagleeye2's Blog

CON CLUSIONS FOR CRAPS DATA ANALYSIS (Note tabulayed data below Courtswey of MIPLET, many thanks ~

CONCLUSIONS
1) Dice Sets in #'s 24902 (Red) & 37469 (Blue) were stated to come from different suppliers & had significantly different prices, yet,
almost certainly came from the same manufacturer.

2) Dice Set # 3 (Yellow) were stated to come from a Las Vegas manufacturer, yet shipped to me from Zip 75006 (Carrollton TX).

3) Dimensional & weight tolerance on these same sleeve Dice, (each Die #'d with a marker before measurements) were Extremely Small,
with perfectly SQUARE Sides, verifying high manufacturing quality for all dice, a good thing.

4) Lowest weight Die from each Group was Placed on a Balancer & Verified to Yield Random Faces on Spin Testing @ the loosest Caliper
setting. All 5 Red Dice were Spin Tested & Verified to be Balanced, as such, I saw no need to spin other Blue or Yellow Dice. Weight
& dimnensional measurements shown above, proved that all Dice were manufactured under good manufacturing practices. I will shoot
Pairs of of all Dice Sets, on my practice table to see if any obvious differences occur, but this may take a month to conduct.

5) A Balancing Caliper requires skill to operate & must be utilized with Die running only on it's very extreme corners, thus minimizing
interference from the Tetrahedral Edge Surfaces of the Die. Tetrahedral Edge Surface interference from the Die in the caliper, will
result in failure to VERIFY DIE Unbalance; unless it is set to the very minimum that will retain the Die in the caliper. When set
to these minimums, this procedure provides a highly accurate measure of Die Balance. Note that WD-40 was applied to the Balancer /
Die running surface in these tests, via a very small brush, to minimize friction of Die to Caliper surfaces.

6) After verifying Balance, the #5 Die from 24902 (lowest average weight) was counter weighted to establish the weight needed to verify
Unbalance in the Die. This was accomplished by adding Super Glue to the #6 Face of the Die. Some 5 drops added failed to verify
unbalance in this test. Adding another 5 Drops of Super Glue (& allowing it to dry), however resulted in Verification of unbalance,
wherein a series of spin testing trials, resulted in some 4 of 6 Spin tests Documenting the #6 Face to Stop at OR NEAR the Bottom of
the Balancer. In this test, the weight added to the #6 Die, Required to Verified Unbalance was only 0.1738 Grams as Applied directly
to the #6 Face of the Die.. This is only 2.055% of the weight of the Die evaluated.

7) Of Note & Concern is the Maximum Weight Delta for Die #4 (From the as handled, etc. to the Wiped Clean Condition) was 0.17675
Grams, just over that weight it took to verify Unbalance in a Die! Now, if that weight was uniformly distributed, over the Faces of the
Die, no concern. However, if that weight was concentrated on a single Die Face, it alone could result in that Die Being Unbalanced.

8) Wow, there may be validity, not superstition, behind some shooters pitching the Dice into the wall & rubbing them around there, or
scrubbing them on the felt, thereby cleaning them back to their manufactured state & minimizing potential Unbalance from accumulated
oil & perspiration therein, before they shoot! Yes, this habit would appear to enhance Balance of the Dice, before shooting them!

9) Some potential regulations call for PiP's to be Flat to the surface. This was essentially true, however, a Micrometer Verifies a Step for
each PiP, of about 0.0002 to 0.0003 Inches. This likely results from the PiP's being harder than the Acetate Plastic comprising the
Die Body, leaving them slightly higher after grinding & polishing operations. On all Die, herein, the PiP's were very thin (Avg. 0.030 IN) &
not likely to produce unbalance unless a very significant difference in PiP Density Vs the Base Acetate Material existed, This could
be possible, if PiP material for say 5's & 6's was Doped with lead, etc. This, however, would require specific hand loading of those PiP's
and would require a conscious effort by the manufacturer of those Dice. A Dice Caliper would point this BIAS out very quickly, however.

10) In the second table above, PiP's were found to be only 0.030 inches thick. This would be good manufacturing processing, as the PiP
Epoxy Material is estimated to cost some 20 times that of the base Acetate material & keeping it thin reduces cost per Die. PiP
thickness was visually measured by placing a wire gauge over slivered sections of Blue Die # 5, exposing PiP #, in each of the 6 Faces.

11) Loading dice to favor 1's & 2's, resulting in a disproportional # of 6~1 & 5~2 Seven Outs, we need only to weight the 5 & 6 faces. With
the very thin PiP's on all Dice observed herein, this seems unlikely. Of Note, however, would be to make the PiP's Much Deeper, thus
enhancing Unbalance in favor of Dice Faces having more PiPs (assuming PiP Material is denser than the Acetate). One can see the
relative thickness of PiP's, by holding a Die to the light & looking through it; the #1 provides a Clear shot at viewing it's thickness in
this manner. I'd be very suspicious of Intentional Unbalance, with any Die having PiP's of significant depth, as depth would enhance
unbalance with PiP density Greater than or Less than, the base Acetate Material, while increasing the Time & Cost to manufacture.

12) CROOKED Dice could also be created by "TWISTING", or "SHAVING" a side of the Dice. One should be able to see this
by placing two Dice Face to Face & feeling a slight wobble & or holding them tightly together & seeing a Light Gap somewhere
between their faces. Either of these & it's time to AVOID this CASINO FOREVER, as they would be Verified "Crooked As A Snake"!

13) With the perponderance of 6~1 & 5~2 Seven Outs reported on dice threads, I reviewed the last 30 Sevens From my practice table,
with the following results: 8, 6~1's, 10, 5~2's & 12, 4~3's. This could be normal, but definitely does not represent what is happening
in the typical Casino. The same dice were used for all of the above & they were rather nicked up from throwing. All dice data analysis
at the top of the page, are from NEW Unused Dice, purchased to have come from three manufacturers. I will post results from shooting
the Dice measured & weighed above, at a later date.

14) I hope that the Data Analysis above, provokes thought about how Casino's Have Unbalanced Dice Ceated; from some Craps Players
& that they in turn provide their thoughts & Comments thereto. Hopefully, taken together, we can expose those Casino's that are
taking advantage of Us Craps Players.

CRAPS ~ DATA ANALYSIS ~ TABLE FORMAT ~ CONCLUSIONS ABOVE

	CRAPS DICE ANALYSIS DATA
	DIMENSION ACROSS FLATS INCHES								WEIGHT*		* * DICE WIPED CLEAN (DWC) ~ Tweezer Handled							CLEANED
Lot #	24902		1~6		2~5		3~4		~		1	2	3	4		AVERAGE**		WT. Delta
Die	#1		0.7612		0.7606		0.7614		8.588		8.478	8.487	8.485	8.492		8.4855		0.1025
Pack of 5	#2		0.7619		0.7614		0.7612		8.622		8.595	8.601	8.581	8.586		8.59075		0.03125
CLEAR	#3		0.7624		0.7617		0.7614		8.621		8.59	8.582	8.583	8.582		8.58425		0.03675
RED	#4		0.7618		0.7614		0.7614		8.639		8.464	8.463	8.461	8.461		8.46225		0.17675
# 'D	#5		0.7624		0.7616		0.7613		8.612		8.455	8.455	8.457	8.454		8.45525		0.15675
250	DELTA		0.0012		0.0011		0.0002		~					DELTA		0.1355
	Average		0.76194		0.76134		0.76134							Average		8.5156
									#5 Die with 5 Drops Super Glue (#6 Face) Classified as "Balanced"
									#5 Die with 10 Drops Super Glue (#6 Face) "UNBALANCED" ~ Weights Below
									#5 Weight		8.628	8.631	8.628	8.629		8.6290
									# 5 Die DELTA Weight that verifies UNBALANCE = 0.1738 Grams (Super Glue)
									* Note: Dice were handled, viewed, placed side by side, weighed, etc. without gloves,
									DWC data collected with Dice handled with a Tweezers, no fingers, etc.
	DIMENSION ACROSS FLATS INCHES								** Dice wiped clean, placed on scale 4 times with Tweezers
Lot #	37469		1~6		2~5		3~4				1	2	3	4		AVERAGE**	F	PiP IN
Die	#1		0.7660		0.7664		0.7660		~		8.706	8.708	8.708	8.705		8.7068	1	0.030
Pack of 5	#2		0.7658		0.7655		0.7661		~		8.754	8.751	8.744	8.739		8.7470	2	0.025
CLEAR	#3		0.7662		0.7660		0.7654		~		8.742	8.754	8.749	8.744		8.7473	3	0.030
BLUE	#4		0.7661		0.7652		0.7662		~		8.758	8.746	8.742	8.744		8.7475	4	0.030
# 'D	#5		0.7624		0.7616		0.7613		~		8.736	8.746	8.743	8.739		8.7410	5	0.035
374	DELTA		0.0038		0.0048		0.0049		~					DELTA		0.0403	6	0.030
	Average		0.7653		0.76494		0.7650							Average		8.7379		0.030
	DIMENSION ACROSS FLATS INCHES								** Dice wiped clean, placed on scale 4 times with Tweezers
Lot #	N / A		1~6		2~5		3~4				1	2	3	4		AVERAGE**		~
Die	#1		0.7525		0.7519		0.7527		~		8.363	8.335	8.327	8.324		8.33725
Pack of 5	#2		0.755		0.7518		0.7524		~		8.344	8.331	8.314	8.314		8.32575
CLEAR	#3		0.7529		0.7528		0.7525		~		8.378	8.363	8.349	8.351		8.36025
YELLOW	#4		0.7521		0.7514		0.7502		~		8.267	8.263	8.262	8.277		8.26725
# 'D	#5		0.7522		0.7524		0.7521		~		8.283	8.278	8.278	8.269		8.2770
317	DELTA		0.0029		0.0014		0.0025		~					DELTA		0.04875
	Average		0.75294		0.75206		0.7520							Average		8.3135