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2 Pac Clear Coat Warning!
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Question
Arcade King
As promised like 4 months ago here are the pics of what happened to my STTNG machine after probably 2 or 3 months the clear was done.
I wasnt going to put this thread up until it was fixed but I've decided it will have to be recleared to get it back to something I'd be happy to keep.
I had taken the machine to woka's meet on the 26 of April and no issues at all. I hadn't turned it on for a few weeks after that because I had other projects, my daughter maybe played 1 or 2 games the night before I noticed it.
One morning I come down to lift the playfield up to check the flippers coils were all correct when I noticed this
WHAT THE FUCK I said !
Naturally I made it worse by pressing around and generally being a dick head.
Theory
Myself and Scott believe this was the caused by a combination of heat from the globes which heated up the insert which in turn moved as it cooled and pulled the decal that is glued to the top of the plastic insert away, Factor in the chilly Autumn mornings and you got a cocktail for insert disaster.
I've seen this on quite a few Diamond coated pins but nothing this bad, usually you may get a paper thin milky line around some bits of a insert but because this had 5 coats of clear there was no way the decal was going to move with the plastic insert.
Prevention
If you want to prevent these problem consider the following as mandatory.
1. Reglue all inserts before you clear! Use some super glue around the underside of the insert and don't skimp. Reseat any raised or lowered inserts using a heat gun on the underside. There are topics on the forum that cover this in more detail.
2. too many coats of clear may not be a good idea. If the playfield is already diamond plated then maybe just got with 2 coats. (shoot me down on this)
3. Use LED's under inserts where possible, this will take the heat factor to nil. They even have the large 906 bulbs in LED form which was probably the cause of the bulk of the damage in the shield area on STTNG. Remeber there is one flasher and 2 555's under each of the 3 shield inserts.
Repair
First off I'd like to thank Savage for taking the time to come over and do this.
These pic's is where Scott is cutting around the decal and removing it from the insert. He then sanded the glue off the top of it. The black line had to be repainted around the edge.
Here Scott has brushed on some 2 pac to fill the hole. Unknown to us the 2 pac clear reacted with the insert plastic and some tiny cracks appeared on the surface of the insert. Scott decided to have another try and wiped the clear out then sanded the top to remove the cracks.
Seemed to be ok at this point. :unsure Problem was it just looked too good so we decided to do the other 2.
Well heres what it looked like with a fluro under it.
Looks good huh? well it did. Was about 6 pm Scott just got in his car then fuck me dead all three inserts started getting surface cracks. Not really much we could do.
Actually didnt look that bad when the clear was hard but could still see the tiny cracks, guess will just have to live with it.
Lesson learned, you must cover the insert with something before clearing. I have no idea what the decal plastic/mylar or what ever was made of but it was very thin, hopefully somebody in the know can tell us.
Another problem I've run into is once its sanded down I'm left with some tiny imperfections like pitting specially around the edges (ill have to take a pic).
Scott has come out 3 times if a effort to fix it but I think I'm just going to get him to clear it again and just chalk it up to a learning experience.
I'm no expert by a long shot but I think its important to share your experiences with other to help them avoid any misfortune such as i had.
Again be interested to know what the decal is made of.
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