BACKGLASS REPAIR WITH DECALS

Williams Four Corners

By Alan Lewis

This backglass repair using waterslide decals is on a 1952 Williams Four Corners pinball machine.

The backglass had the typical vertical strip damage found on these backglasses due to the way the glass is removed from the game.If done incorrectly the glass is scratched by the light board behind it.You can see this glass was heavily damaged.

The disappointing part of this damage is that it goes through most of the scoring windows.Ouch!

On my last project (Rainbow) I showed how to repair backlit general illumination graphics.The Four Corners project will show by example how this technique works on individual scoring windows.

I wonít rehash how to do the details of the repair since that is covered by my previous webpages on the other backglass projects.The techniques are the same.Just make sure you use a hot knife to cut the outlines in the ink before scraping.

Using waterslide decals to fix a backglass is a repair rather than a restoration.It will look very nice until you can find a reproduction or better glass.On those glasses that will never be reproduced this repair may be your only option.I find the repair looks very nice, most people do not know it has been repaired.

Material cost is low, labor cost is high!Sweat equity is your money.

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BEFORE/AFTER

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The 40,000 and 80,000 windows were heavily damaged.The scoring window must be completely scraped off.The extra amount taken off the edges will get filled in with the decal graphics so it will blend in.

The new repair decals are applied from the rear of the glass.

This is the first decal layer, the one that you print backwards and paint flat white.

It will cover up any missing graphics whether they are backlit or not.

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The second, clear, decal layer is applied over the first.

In this photo the black masking paint is already applied.

When backlit the two repaired score windows look exactly like the originals, if not better.

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Now the real OUCH part.

Remove all the damaged score windows up top.Using a

hot knife to trace the straight lines and a chisel blade

X-Acto knife, all the ink is removed.

These are the two repair decal sheets ready to be trimmed.

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Most of the bottom windows now have the new decal, only one left to do.

The second clear repair decal is applied over the first one.

I applied Triple Thick acrylic coating with a brush on the decals.

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Here is the repair when backlit.The 200,000 and 300,000

are original and the 400,00 and up are repaired.

The TILT graphic was also damaged.The damage was spot repaired

using decals and the black masking areas were repainted to

reconstruct the original graphic.

This is one repair that did not need complete removal; most of the original graphic was saved!

It looks very presentable when lit up.Besides, you arenít supposed

to ever see it lit up, right?

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BEFORE/AFTER

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This is the overall view of all the repairs.I have not finished

the score widow repairs at this point, this just shows how

much of the glass was repaired.

CLICK HERE FOR A SHORT VIDEO OF THE SCORE REPAIR IN ACTION

 

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COPYRIGHT BY ALAN LEWIS