# Adhesive to use when bonding syntactic foam

**URL:** <https://discuss.bluerobotics.com/t/adhesive-to-use-when-bonding-syntactic-foam/2889>\
**Category:** Buoyancy and Ballast\
**Created:** [July 1, 2018, 6:43pm UTC](https://discuss.bluerobotics.com/t/adhesive-to-use-when-bonding-syntactic-foam/2889 "2018-07-01T18:43:06Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![tciii](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/tciii/32/673_2.png) [@tciii](https://discuss.bluerobotics.com/u/tciii)\
**Post date:** [July 1, 2018, 6:43pm UTC](https://discuss.bluerobotics.com/t/adhesive-to-use-when-bonding-syntactic-foam/2889/1 "2018-07-01T18:43:06Z")

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Hi All,

I am going to need to bond pieces of syntactic foam together and would like a recommendation for the type of adhesive to use.

Regards,  
TCIII AVD

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**Author:** ![nemorov](https://avatars.discourse-cdn.com/v4/letter/n/e79b87/32.png) [@nemorov](https://discuss.bluerobotics.com/u/nemorov)\
**Post date:** [July 2, 2018, 9:31pm UTC](https://discuss.bluerobotics.com/t/adhesive-to-use-when-bonding-syntactic-foam/2889/2 "2018-07-02T21:31:08Z")

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Hi there,  
Others may work but the glue recommended to me by Trelleborg who manufacture Syntatic foam is 3M Scotch-Weld 1838 B/A.  
Its a two part expoxy glue and I’ve used it to make several large buoyancy blocks for large ROVs and never had a failure.  
Gavin

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**Author:** ![tciii](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/tciii/32/673_2.png) [@tciii](https://discuss.bluerobotics.com/u/tciii)\
**Post date:** [July 3, 2018, 3:23pm UTC](https://discuss.bluerobotics.com/t/adhesive-to-use-when-bonding-syntactic-foam/2889/3 "2018-07-03T15:23:40Z")

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@nemorov,

Thanks for the suggestion, much appreciated.

Regards,  
TCIII AVD

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**Author:** ![luisgamez](https://avatars.discourse-cdn.com/v4/letter/l/c89c15/32.png) [@luisgamez](https://discuss.bluerobotics.com/u/luisgamez)\
**Post date:** [July 3, 2018, 5:19pm UTC](https://discuss.bluerobotics.com/t/adhesive-to-use-when-bonding-syntactic-foam/2889/4 "2018-07-03T17:19:17Z")

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Hey @TCIII

Please be so kind to share your results 😃

Regards!

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**Author:** ![tciii](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/tciii/32/673_2.png) [@tciii](https://discuss.bluerobotics.com/u/tciii)\
**Post date:** [July 4, 2018, 1:02am UTC](https://discuss.bluerobotics.com/t/adhesive-to-use-when-bonding-syntactic-foam/2889/5 "2018-07-04T01:02:40Z")

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@luisgamez,

The 3M Scotch-Weld 1838 B/A is around $60 for the two part epoxy which is a little out of my league for hobby ROVs.

Rusty has recommended using the Loctite Marine epoxy and has indicated that he has achieved good results with that epoxy.

I will let you know how the Loctite Marine epoxy performs.

Regards,  
TCIII AVD

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**Author:** ![luisgamez](https://avatars.discourse-cdn.com/v4/letter/l/c89c15/32.png) [@luisgamez](https://discuss.bluerobotics.com/u/luisgamez)\
**Post date:** [July 4, 2018, 7:46pm UTC](https://discuss.bluerobotics.com/t/adhesive-to-use-when-bonding-syntactic-foam/2889/6 "2018-07-04T19:46:34Z")

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Thanks TCIII !!!

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**Author:** ![tciii](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/tciii/32/673_2.png) [@tciii](https://discuss.bluerobotics.com/u/tciii)\
**Post date:** [July 5, 2018, 3:37pm UTC](https://discuss.bluerobotics.com/t/adhesive-to-use-when-bonding-syntactic-foam/2889/7 "2018-07-05T15:37:27Z")

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@luisgamez,

The Loctite Marine Epoxy worked great and provided a solid bond between the two pieces of syntactic foam.

Since I am working with small pieces of syntactic foam I cannot attest to the shear strength of the bond, however the bond seam appears to be good and solid and will meet my modest structural requirements.

Regards,  
TCIII AVD

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**Author:** ![luisgamez](https://avatars.discourse-cdn.com/v4/letter/l/c89c15/32.png) [@luisgamez](https://discuss.bluerobotics.com/u/luisgamez)\
**Post date:** [July 5, 2018, 11:32pm UTC](https://discuss.bluerobotics.com/t/adhesive-to-use-when-bonding-syntactic-foam/2889/8 "2018-07-05T23:32:47Z")

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Hi @TCIII

Thanks for your feedback I might need to do this bonding in the next couple of weeks!! ill proceed to use the marine loctite epoxy