Interesting challenge :-)
Having used it before for a small crack near my keel that reappeared every year
I suggest you use G/Flex, it fixed my problem 4 years ago ( never cracked again
). It has more elasticity than regular epoxy, has a 30 minutes working time ,
can be mixed with all West fillers and completely cures in 24 hours ( standard
epoxy completely cures in 5 days ). After that you can use something like 3M
Fast cure 4200 and still have some time left to take a beer and enjoy your
recent accomplishement :-)
As others have suggested, don't fill the whold 2 in hole, just drill, dig about
1/2 inch around the hole, wet out carefully with a small brush, then finish up
to the edge with a filler ( colloidal silica ) and let it for 24 hours .
You may want to check if FastCure 4200 is compatible with your sensor
plastic.Also leave a gap between the sensor and hole so there will be enough
caulking.
Another good thing about G/Flex is that it is ( somehow ) possible to apply it
on wet/humid fiberglass.
And lastly, if it is a plastic transducer, don't overtight when installing,
typically if should be little more than hand-tight ( Channelocks pliers are
good for htat if you use it lightly )
Sylvain
C&C27MkIII
WEST SYSTEM | Specialty Epoxies - G/flex
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WEST SYSTEM | Specialty Epoxies - G/flex
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From: Martin DeYoung via CnC-List <cnc-list@cnc-list.com>
To: "cnc-list@cnc-list.com" <cnc-list@cnc-list.com>
Cc: Martin DeYoung <mdeyo...@deyoungmfg.com>
Sent: Monday, May 2, 2016 11:49 AM
Subject: Re: Stus-List West System cored hull time to cure
I use the 24 hour cure time when the work area temperature is above 60F.
West Systems may offer some direction on how that can be reduced if the epoxy
is not a primary bond (used as a filler vs. bonding). A key bit of info from
West would be how soon you can paint the new epoxy, and how soon it can be
exposed to water.
If it was my boat I would be sure each step has cured properly, including any
sealant and coatings.
Martin
Calypso
1971 C&C 43
Seattle
________________________________________
From: CnC-List [cnc-list-boun...@cnc-list.com] on behalf of Steve Thomas via
CnC-List [cnc-list@cnc-list.com]
Sent: Monday, May 02, 2016 7:18 AM
To: cnc-list@cnc-list.com
Cc: Steve Thomas
Subject: Stus-List West System cored hull time to cure
I am contemplating installing a new transducer in a cored hull, but have only
2 days till scheduled launch. If I do it, it will be a 2 inch hole, and I want
to do it right.
The process I have got from the list over the years is in a nutshell,as
follows:
Once the hole is cut, and the core dug out to some range around the hole, you
fill it up again with West System thickened expxy. Then drill it out again and
proceed as with a solid hull.
How long does the epoxy take to set?
What would be a minimum time to budget for the whole process?
I have never used epoxy other than glue.
Thanks,
Steve Thomas
C&C36
Merritt Island, FL
_______________________________________________
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_______________________________________________
This list is supported by the generous donations of our members. If you like
what we do, please help us pay for our costs by donating. All Contributions are
greatly appreciated!
_______________________________________________
This list is supported by the generous donations of our members. If you like
what we do, please help us pay for our costs by donating. All Contributions are
greatly appreciated!
