Quoted from Pimp77:I was waiting to hear from blackknight. Is this type of thing normal blackknight??? Home use after a month or two? No way, right?
Just to further explain my observations.
I have seen this occur many times on titles over the course of a title's normal route life, namely 3-5 years.
My IJ: TBA I bought back in 1998 had the right front edge starting to separate which I fixed with industrial wood glue and clamps.
It happens.
I have never seen this occur after single month period, UNLESS...
1 ) A game was improperly moved after setup (including "dragging" and "pushing" without a dolly or equivalent)
2) During setup (including the old operator method of putting the front legs on and using your knees to brace while the back legs are installed, which puts a lot of extra pressure on the front of the cabinet as it is "pushed" forward)
3 ) Damaged in transit for delivery (via dropping or slid violently, even if on a pallet and move without equipment)
4 ) Legs are not properly tightened or the bolts are stripped out from the plates (this results is rotational torque on the joints and seam edges)
5 ) There is a lot of nudging on a title on a route or home (usually in combination with loose leg bolts)
6 ) Factory existing damage (this is a QA/QC problem, either on materials or construction)
All these can cause cabinets to crack at the corner edge seams, quite readily, if overlooked.
The most common are 1, 2, and 4.
Wood pinball cabinets are hardly invincible with the low grade multiple layer plywood, and split readily under moderate pressure, either through the layers, joints, or seams.
Remember most pinball cabinets have a least 1-2 components of the "box" that are particle board, and that is not not going to provide a lot of additional strength, and can fall apart fairly easily even with strong glue. Either the bottom, back, or both.
I don't know what glue being used now with Stern, games from the 90s and earlier are hide glue, with a few exceptions.
Keeping mind what I also said before that modern games are still throwback from earlier times, and the industry is still building games with the concept of operators, but selling them to a different market. It is not a recognized, "consumer electronics device" yet.
The current modern Stern corner joints ARE cut differently and simplified.
Like I mentioned before, my recommendation was put the game up on a dolley perpendicular (or two sawhorses), not longitudinal (takes all weight off corners completely), buy the upgraded leg bolt plates and install them, fill the corner joints recesses with industry wood glue (tons of great options, but use those for WOOD, not "general purpose"), and use corner clamps. Day to dry each corner. If an owner is really concerned buy a few extra heavy duty flanged corner braces (not those cheap angles), one each near the top of the corners of the cabinet. Predrill all holes, under screw width using a drill depth limiter or piece of tape. Strength from multiple directions.
The cabinet will NEVER come apart unless the game is dropped out a window.
An owner does not need to do an entire vertical seam length as this is WAY overkill, and the benefits become diminishing over how much strength can be increased due to the basic wood materials used in the cabinet.
I do not recommend installing "after the fact" pocket screws because of the materials involved, if an owner makes an angle directional mistake, you will end up weakening the cabinet and can even split the seam, if an owner has never done this before.
This method best done before a game is built.
If the recommend is followed above, splitting is also arrested, and cabinet will most likely outlive you.
Nudge away and use pinball "english" to your heart's content, but still be mindful when you move your games.