Epoxy glue cure

See our FAQ and tutorials before posting.
jbo_c
Very Active Poster
Very Active Poster
Posts: 1073
Joined: Sat Jun 30, 2007 8:51 pm
Location: Gainesville, GA

Epoxy glue cure

Post by jbo_c »

Gluing rub rails on with peanut butter made with MarinEpoxy slow hardener. How long before I should be comfortable releasing the clamps?

Jbo

TomW1
Very Active Poster
Very Active Poster
Posts: 5893
Joined: Sun Apr 19, 2015 10:57 pm
Location: Bryson City, NC

Re: Epoxy glue cure

Post by TomW1 »

What's your temp if over 80 three days for reliability, some will say a week. Tom
Restored Mirror Dinghy, Bought OD18 built by CL, Westlawn School of Yacht Design courses. LT US Navy 1970-1978

jbo_c
Very Active Poster
Very Active Poster
Posts: 1073
Joined: Sat Jun 30, 2007 8:51 pm
Location: Gainesville, GA

Re: Epoxy glue cure

Post by jbo_c »

We’re mid-80s during the day.

Gotta admit, three days wasn’t even on my radar. I was just wondering if it needed to be a full 24hrs. :)

Jbo

OneWayTraffic
* Bateau Builder *
* Bateau Builder *
Posts: 1669
Joined: Sat Jan 10, 2015 7:13 pm
Location: New Zealand

Re: Epoxy glue cure

Post by OneWayTraffic »

Usually 24 hours is more than enough in good temperatures, though if the part was under a lot of stress I'd give it longer. Creep under load while curing is possible.

fallguy1000
* Bateau Builder - Expert *
* Bateau Builder - Expert *
Posts: 10237
Joined: Tue Jan 12, 2010 12:25 am

Re: Epoxy glue cure

Post by fallguy1000 »

I go 24 hours for joints under clamping stress or overnite if not stressed.
My boat build is here -------->

viewtopic.php?f=12&t=62495

User avatar
OrangeQuest
Very Active Poster
Very Active Poster
Posts: 3953
Joined: Tue Aug 28, 2018 1:14 pm
Location: Houston, Texas

Re: Epoxy glue cure

Post by OrangeQuest »

I agree if using the BBC epoxy at 24hours. But I would also consider what will be the coolest overnight temp. Then mix and glue as the temps are starting to increase (morning) for the longer pot life. The epoxy is warmed not only by the chemical process but then warms by nature for a longer warmer curing time. But consideration also for how much mix it used in the epoxy glue. If you want a glue mix that doesn't sag on the vertical but want a single piece of wood to flex a lot, then thinner wood but layers, and/or kerf the piece before gluing so it relieves the stress. This works well on rub rails and makes them stronger where they bend.
"that it isn't just an ordinary sort of boat. Sometimes it's a Boat, and sometimes it's more of an Accident. It all depends." "Depends on what?" "On whether I'm on the top of it or underneath it."
A. A. Milne

Post Reply

Who is online

Users browsing this forum: No registered users and 0 guests