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Author Topic: Acrylic or plasticard to fibreglass  (Read 1559 times)

Brian60

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Acrylic or plasticard to fibreglass
« on: February 04, 2018, 07:00:33 pm »

Can anyone recommend a suitable adhesive to bond clear acrylic sheet sold under the plasticard brand to grp please? I need to glaze the portholes in my hull but I am having trouble getting the stuff to stick, epoxy is of no use, the plastic just peels away from it.

T33cno

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Re: Acrylic or plasticard to fibreglass
« Reply #1 on: February 04, 2018, 07:05:23 pm »

Would cockpit adhesive work perhaps?
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RMH

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Re: Acrylic or plasticard to fibreglass
« Reply #2 on: February 04, 2018, 07:05:33 pm »

Where glue is concerned, if all else fails I always turn to UHU Plus Acrylit (Stabilit express equivalent). Expensive but a little goes a long way and it sticks to almost everything.
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T33cno

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Brian60

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Re: Acrylic or plasticard to fibreglass
« Reply #4 on: February 04, 2018, 07:16:58 pm »

I don't think the canopy glue will work due to the relatives roughness of the internal grp surface.

I have some UHU acrylic similar to the Stabilit but wasn't sure it would hold or not. I can always try and stick a piece to to the inner bottom of the hull and try to peel it away after it has time to set up.

The problem with plasticard (or plastic products in general) is that they really need a solvent to hold them.

T33cno

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Re: Acrylic or plasticard to fibreglass
« Reply #5 on: February 04, 2018, 07:33:28 pm »

I don't think the canopy glue will work due to the relatives roughness of the internal grp surface.


Not sure but it says


moulding to the differences in the material's texture
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unbuiltnautilus

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Re: Acrylic or plasticard to fibreglass
« Reply #6 on: February 04, 2018, 08:34:38 pm »

The cockpit glue is unlikely to be a fully waterproof option. As mentioned previously UHU Plus Acrylit, alternatively Stabilit Express, Devcon Plastic Welder or Deluxe Materials Fusion should fulfill your requirements.
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T33cno

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Re: Acrylic or plasticard to fibreglass
« Reply #7 on: February 04, 2018, 08:36:41 pm »

Fusion will for sure but seems like overkill. Unless itís going to be immersed in water is it really an issue?
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Stavros

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Re: Acrylic or plasticard to fibreglass
« Reply #8 on: February 04, 2018, 08:37:05 pm »

One product springs to mind and thats Sticks like XXXX dont know if you can get hold of it or something similar in Spain


Dave
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unbuiltnautilus

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Re: Acrylic or plasticard to fibreglass
« Reply #9 on: February 04, 2018, 09:43:06 pm »

I never skimp when sealing up the hull of my models, I don't think there is overkill when completing that part of the build. I may consider Canopy Glue for my flying bridge glazing on my Brave class rebuild, but would use some form of contact glue ( Evostick or UHU POR ) for superstructure glazing, which can easily be poked through with fingers, but the hull, overkill all the way.
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Listen politely, nod approvingly, then do what you want, works for me!

T33cno

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Re: Acrylic or plasticard to fibreglass
« Reply #10 on: February 04, 2018, 09:46:25 pm »

Fair doís :-))  I like fusion very much and used it for a number of jobs
Was extremely strong when attaching my styrene fender shelves to the GRP of my tug.
I have no experience of the other suggestions that are likely every bit as good.
One thing I've learned with fusion is that it's quite easy to scale down the size of a mix and if it starts getting too thick too soon you can just add more liquid and carry on.
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Chris57

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Re: Acrylic or plasticard to fibreglass
« Reply #11 on: February 04, 2018, 10:26:24 pm »

How about using a small amount of transparent silicon bath sealant, the type that comes in small aerosol type applicators?


Chris B
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TailUK

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Re: Acrylic or plasticard to fibreglass
« Reply #12 on: February 05, 2018, 10:40:51 am »

Can anyone recommend a suitable adhesive to bond clear acrylic sheet sold under the plasticard brand to grp please? I need to glaze the portholes in my hull but I am having trouble getting the stuff to stick, epoxy is of no use, the plastic just peels away from it.
To put things into perspective, The clear plastic supplied to Plasti-card is probably Polyethylene Terethphalate  either in the form of APET or PETG and not Acrylic.  Personally I'd look at the Epoxy before trying something exotic or expensive.  Is it an old epoxy or a cheap "5 minute" glue.  make sure that the Epoxy is in it's prime before giving up on it. 
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Brian60

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Re: Acrylic or plasticard to fibreglass
« Reply #13 on: February 09, 2018, 04:21:03 pm »

Just an update......

I used UHU Acrylit to stick an offcut of the clear acrylic I had to the inside moulding of my grp hull. Two days later I have gone to it and the piece snapped off where the glue began, leaving a piece solidly bonded to the fibreglass. I used a chisel at the edge of the remaining and it did come away but in small chips that snapped off with the chisel. So when it comes to putting the windows in the hull, the UHU acrylit is the way I will do it.

boatsdelboy2

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Re: Acrylic or plasticard to fibreglass
« Reply #14 on: February 09, 2018, 04:26:48 pm »

Hi all
          I agree with RMH and use UHU no clouding and all still stuck in place
Dave
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T33cno

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Re: Acrylic or plasticard to fibreglass
« Reply #15 on: February 09, 2018, 05:42:30 pm »

Thanks for the update Brian, very useful  :-))
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