Blast City Crack Repair

Arcade cabinet hardware and accessories
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BuggeringHell
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Blast City Crack Repair

Post by BuggeringHell » July 9th, 2019, 6:34 pm

Image
Image

I recently received my first candy and there are visible cracks underneath the control panel. I will drill the ends of each crack with a small drill bit to prevent it from worsening. I am thinking of routing out the cracks with a small dremel bit to widen then to help whatever filler I use set. Does anyone have any advice regarding fillers?

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zak
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Re: Blast City Crack Repair

Post by zak » July 11th, 2019, 10:33 pm

I saw the cracks in your picture and blurted out your forum username :awe:

BuggeringHell
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Re: Blast City Crack Repair

Post by BuggeringHell » July 11th, 2019, 11:37 pm

:lol:

When I get the chance to properly test the entire cab with a Sega Naomi I recently purchased, I will inspect the inside of the cab to see if it's just the gel coat that is cracked. If so, I might just burr out the crackcs with a dremel and use a gel coat patch repair kit typically bought for boats (colour matched of course).

I found out, particularly for boats and fibreglass car kits, gel coat can easily crack when flexed, but the laminate underneath can still remain intact. Which is probably the case with a lot of Blast Cities when the control panel takes on any form of weight/movement.

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Andypc
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Re: Blast City Crack Repair

Post by Andypc » July 12th, 2019, 12:37 am

You can use a fibreglass repair kit on the inside to strengthen it.
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BuggeringHell
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Re: Blast City Crack Repair

Post by BuggeringHell » July 12th, 2019, 2:00 am

Yeah ok, hopefully it won't need it and it's just flexing over the years that caused cracks on the gel coat side only.

If it's just the gel coat, I will burr out the cracks and use this RAL 9002 gel coat repair kit: https://www.ecfibreglasssupplies.co.uk/ ... e-ral-9002

If the crack is through the entire body, I will route out and widen the crack, and use a epoxy/glass fibre repair kit from the inside, and then use the gel coat kit I mentioned above from the outside.

I'm away at the moment but I'll document my process (or failings...) when I'm back

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Paulie
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Re: Blast City Crack Repair

Post by Paulie » July 12th, 2019, 8:33 am

I've had past success with fiberglass repair kits, various epoxy's and even modroc for holes.

I would imagine anything that was designed specifically for fiberglass with marine application's would work very well such as the gel kits you mentioned.

When it's done don't forget to pick up some Novus to polish her up with. Again widely used in the boating scene.

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Re: Blast City Crack Repair

Post by BuggeringHell » July 12th, 2019, 7:00 pm

The gel coat repair kit shop page had this video demonstration:


It does include some polishing compound, but is it just me or does the sanded area really stand out on the video when they are finished? Might need to wet sand finer than they did, and buff it out.

If I end up replacing the side art (which has yellowed quite significantly), I'm considering buying a buffing tool to give the whole body a polish.

After the repair, hopefully following these steps I can avoid respraying the body all together by following the steps in this order:
* Cilit Bang Black Mould Remover (whole body)
* Magic Sponge (select areas)
* Novus 321 (select areas)
* Fine Wet Sand Leftover Scratches (select areas)
* Buff/Polish (whole body)

Some of the metal parts have surface rust, so I will sand and respray them with some metal primer, colour matched RAL and clear coat.

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