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Old 25-05-2018, 16:01   #1
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Acrylic/Lewmar hatch and self adhesive 3M Velcro

I would like to add some security sensors to my Lewmar hatches, which necessitates the use of the 3M industrial Velcro.

I know acrylic can be sensitive to chemicals, for instance: I had some crazing from using a bike inner tube as a gasket - but none from gluing a fitting back on with epoxy!

I wondered if there might be something in the sticky self adhesive (that is commonly used for Velcro, stickers etc) that could cause crazing in the acrylic.

Has anyone used rubbery-gummy self-adhesive on Acrylic, stickers or the like, and can report any problems.

Input or advice very much appreciated!.
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Old 25-05-2018, 17:12   #2
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Re: Acrylic/Lewmar hatch and self adhesive 3M Velcro

that gummy adhesive on the back of velcro should give you no problems except if the acrylic is fairly old (10+ years) thats usually when you might see some crazing.
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Old 31-05-2018, 13:59   #3
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Re: Acrylic/Lewmar hatch and self adhesive 3M Velcro

I received a reply from Lewmar for future reference if someone else would like to know.

Technical Support <TSupport@lewmar.com>
11:37 (21 hours ago)

Hi,
3M adhesive will be fine as this is used on the seal of the hatches. I cannot for see an issue with this at all.
Best Regards

Tech Support Engineer
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Old 31-05-2018, 14:01   #4
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Re: Acrylic/Lewmar hatch and self adhesive 3M Velcro

I have used 3M tapes long-term on Lewmar hatches (covers). No problem.
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Old 01-06-2018, 23:12   #5
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Re: Acrylic/Lewmar hatch and self adhesive 3M Velcro

Quote:
Originally Posted by sailabroad View Post
I would like to add some security sensors to my Lewmar hatches, which necessitates the use of the 3M industrial Velcro.

I know acrylic can be sensitive to chemicals, for instance: I had some crazing from using a bike inner tube as a gasket - but none from gluing a fitting back on with epoxy!

I wondered if there might be something in the sticky self adhesive (that is commonly used for Velcro, stickers etc) that could cause crazing in the acrylic.

Has anyone used rubbery-gummy self-adhesive on Acrylic, stickers or the like, and can report any problems.

Input or advice very much appreciated!.

What I found most interesting was the security sensors. Please share which unit your using and pics
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