Injection Molding Forum Question and Response
Still interesting! Maybe some other members will chime in.

Posted 13 February 2008 - 08:57 PM
Posted 14 February 2008 - 09:05 AM
If I had the mold myself, I'd be able to tell if the cavities were swappable.
Posted 14 February 2008 - 11:35 AM
Unfortunately, I don't think those edges, which I believe are where the runners meet the individual cavities and is known as the "gates," tell us anything about the swappability of each individual cavity. Those edges would be there on both a static family mold and a family mold with swappable cavities. That's because both static and swappable cavity family molds have two pieces for each cavity -- the bottom/core and the top/cavity which is lifted off to remove the shot/figure.Do you see the little edge that is above the head of each figure on the tree? It looks like the cavity may have been swappable. Its like two sections were joined, like the runner section was its own piece and that the figure molds were attached in place to that runner. Based on that distinct edge, it looks as if the individual molds may have been removable!
Posted 14 February 2008 - 11:38 AM
Posted 16 February 2008 - 09:33 AM
Edited by arforbes, 16 February 2008 - 09:35 AM.
Posted 16 February 2008 - 09:39 AM
Another kinkeshi tree. Unfortunately, not standard kinkeshi.
Note though that there doesn't appear to be the "edge" at each gate that arforbes' tree has. :shrug:
Posted 16 February 2008 - 09:54 AM
Edited by Soupie, 16 February 2008 - 09:58 AM.
Posted 16 February 2008 - 10:05 AM
Excellent work, Arforbes! This makes perfect sense, of course. I always assumed, looking at your tree, that since the sculpts were mirror images, that they would be identical. Using this info, we should be able to deduce exactly how many molds were used for each sculpt.
For example, if someone were able to find 3 MEAT figures with three -- even slightly -- different trademarking and ejector pin marking locations, than we KNOW there were 3 different molds. Like I said, in just about every other mini-fig line I collect, I have been able to determine TWO sculpt variations -- and this is probably due to them being created in the EXACT same fashion as kinkeshi/MUSCLE as seen above!
Posted 16 February 2008 - 11:00 AM
If, indeed, it is even possible to have an EXACT copy of a family mold. For instance, if it were possible to make exact copies of an entire family mold, why not have the EXACT same copy of each individual mold on each side of the tree? (I don't think moving the ejector pin locations around was necessary for "balancing the family mold. If they could have simply made an exact copy, I think they would have.) If they couldn't even use exact copies of individual molds on each side of a tree, why assume that they could make an exact copy of an entire tree? Maybe, just maybe, there was only one family mold -- with two of each sculpt -- created. Again, it would be very helpful if we had a resident injection mold expert.Maybe only two different molds then, and the same exact "copy" of the tree mold in each factory, or probably even multiples of that. But I would say exact duplicates of the trees existed in each factory then.
Yes, I knew you had said you'd NEVER seen a SC variant, and that has to be significant! (Fifty fuggin' Satan Crosses, Arforbes!!!And like I said before, I have never seen a SC variant. Maybe because on his tree the legs were on the other side to balance it out? Would explain the fact that we have never seen the legs attached and the fact that I have never noticed a SC variant with the 50+ or so I have had in my possession in my years of buying and selling them.
Edited by Soupie, 16 February 2008 - 11:05 AM.
Posted 16 February 2008 - 11:15 AM
Maybe only two different molds then, and the same exact "copy" of the tree mold in each factory, or probably even multiples of that. But I would say exact duplicates of the trees existed in each factory then.
Yes, I knew you had said you'd NEVER seen a SC variant, and that has to be significant! (Fifty fuggin' Satan Crosses, Arforbes!!!And like I said before, I have never seen a SC variant. Maybe because on his tree the legs were on the other side to balance it out? Would explain the fact that we have never seen the legs attached and the fact that I have never noticed a SC variant with the 50+ or so I have had in my possession in my years of buying and selling them.
)
Question: Looking at your tree, are there ANY sculpts that ARE identical on each side?
Posted 16 February 2008 - 11:33 AM
If that is the case, I am going to make the educated assumption that therefore, the part 21 Satan Cross sculpt was only on ONE side of the family mold he was in!And looking at the tree there are no two figures that are the exact same as far as variants go. Each mirrored side looks to be different from the other side in some small way, like the holes.
Posted 16 February 2008 - 11:42 AM
So it is a family mold with a peice o junk fishbone runner. a mold like this could see very large scrap rates after lots of runs, but these parts are clearly low tol. so hmmmmmm.
the final thought (with no facts to support)
In 1982 Ping Smith designed 21 molds that each produced 15-20 figures. Becasue of crap runners on famliy molds 3 of these molds produced high scrap rates but nobody knew why. Because of the huge demand for each figure and the entire set these scrap rates were acceptable.
When offered in the states the high scrap molds were not used and the 45 odd figures were lost never to be seen again. somebody made an extra buck and all americans were left wanting.
---
[H]igh scrap cavities were blocked then. so 1000 shots get you 1000 of five of the six peices and 750(maybe less) of the high scrap sixth cavity. so instead of running 250 extra shots for each cavity you block the sixth lose a figure, cut cycle and minimize scrap.
Edited by Soupie, 16 February 2008 - 11:43 AM.
Posted 16 February 2008 - 02:03 PM
Posted 16 February 2008 - 03:01 PM
Well, there are two spots that I sort of notice on SC. He has a spot in between his feet where it looks like a sprue was removed. Then on the horn on his helmet, there appears to have been a really thin sprue there. Dunno.
I like that idea though about there only being one SC on a mold, but that doesn't help with how he was removed from the color set.
And what about that Glitter tree that was on YAJ last year? I don't think there were two of each figure on that tree were there? I still don't believe that every tree had the same arrangement as the one Alex has.
Posted 16 February 2008 - 03:16 PM
Yeah, my MUSCLE Satan Cross also has the flash on his helmet, but my Keshi one's helmet is smooth as Doc's arse.Well, there are two spots that I sort of notice on SC. He has a spot in between his feet where it looks like a sprue was removed. Then on the horn on his helmet, there appears to have been a really thin sprue there. Dunno.
I'm %#@*& kicking myself because apparently I didn't save pics of that tree! However, the seller appears to have broken it up and is selling it off figure by figure.And what about that Glitter tree that was on YAJ last year? I don't think there were two of each figure on that tree were there? I still don't believe that every tree had the same arrangement as the one Alex has.
Posted 17 February 2008 - 03:29 PM
And what about that Glitter tree that was on YAJ last year? I don't think there were two of each figure on that tree were there? I still don't believe that every tree had the same arrangement as the one Alex has.
But I agree, it is possible that not all trees were doubled up like mine appears to be.
Posted 17 February 2008 - 03:43 PM
Not a re-release set, but a regular 1991 set. Although, the 1991 series was the first to use the new rubber instead of eraser rubber.In any case, it is a re-release set and as I recall seemed to be using a runner system very similar to the ones we've been seeing for the Mini Kinkeshi. (Which, to my eye, looked even crappier than the one used for the standard kinkeshi.)
But you're right. It would be going too far to assume every family mold from the standard kinkeshi line is setup exactly like the one Arforbes found. (But, like I said, in most mini fig lines I collect, there's usually 2 sculpt variations...) Also, we're still faced with the fact that there only seems to be one sculpt for part 21 SC!
Posted 18 February 2008 - 06:15 AM