Reply
 
Thread Tools Search this Thread
 
Old 05 April 2014, 12:45   #1
Member
 
Country: Ireland
Town: Castlebar
Boat name: Clewless
Make: Valiant DR 490
Length: 4m +
Engine: 60 hp ETEC
MMSI: Awaitng one
Join Date: Oct 2007
Posts: 1,339
RIBase
tacky flow coat

48 hrs ago i flow coated the deck of clewless. air temp circa 12 degrees. i used 1 % mek. 48 hrs later the deck is tacky waxy to the touch. i believe this is due to the lack of mek for the given temp. I tried heating the deck with fan heaters for several hrs at about hr 38 but it did not improve matters. I have since taken a chance and brushed in some extra mek onto the deck of the boat. when I did this I could feel the heat come off the flow coat. the waxy/tackey fell appears to have gone. bets on this working? or am I destined to scrape off the new flow coat and go again. I will wash off the surplus mek if any still exists in a few hrs time.

TSM
__________________
two stroke mick is offline   Reply With Quote
Old 05 April 2014, 13:05   #2
Member
 
A1an's Avatar
 
Country: UK - Scotland
Town: Fort William
Make: Ribcraft 585
Length: 5m +
Engine: Yamaha F115
Join Date: Mar 2012
Posts: 2,896
RIBase
Maybe I'm picking you up wrong, you used MEK instead of catalyst?
__________________
There is a place on this planet for all of Gods creatures.........right next to my tatties and gravy.
A1an is offline   Reply With Quote
Old 05 April 2014, 13:12   #3
Member
 
Tim&Linda's Avatar
 
Country: UK - England
Town: Crewe
Boat name: BLACK BOSS
Make: humber & searider
Length: 9m +
Engine: 2x200 ETEC & 2x40
MMSI: ex directory
Join Date: Jun 2013
Posts: 583
RIBase
well if it was me I will remove it and start again do your mixture 2.5% on warm days above 15 degrees and 4.5 % -5% on days above 10 degrees,
__________________
Member of S.A.B.S. (South African Division)
Tim&Linda is offline   Reply With Quote
Old 05 April 2014, 13:12   #4
Member
 
Country: Ireland
Town: Castlebar
Boat name: Clewless
Make: Valiant DR 490
Length: 4m +
Engine: 60 hp ETEC
MMSI: Awaitng one
Join Date: Oct 2007
Posts: 1,339
RIBase
sorry I thought they were the same for flow coat?
__________________
two stroke mick is offline   Reply With Quote
Old 05 April 2014, 13:13   #5
Member
 
A1an's Avatar
 
Country: UK - Scotland
Town: Fort William
Make: Ribcraft 585
Length: 5m +
Engine: Yamaha F115
Join Date: Mar 2012
Posts: 2,896
RIBase
Quote:
Originally Posted by two stroke mick View Post
sorry I thought they were the same for flow coat?
I wasn't aware they were the same, I was under the impression MEK was a cleaning solvent?
__________________
There is a place on this planet for all of Gods creatures.........right next to my tatties and gravy.
A1an is offline   Reply With Quote
Old 05 April 2014, 13:19   #6
Member
 
Tim&Linda's Avatar
 
Country: UK - England
Town: Crewe
Boat name: BLACK BOSS
Make: humber & searider
Length: 9m +
Engine: 2x200 ETEC & 2x40
MMSI: ex directory
Join Date: Jun 2013
Posts: 583
RIBase
sorry not sure about this one but I always used catalyst dont know much about Mek but just done my searider hull in flow coat and catalyst
__________________
Member of S.A.B.S. (South African Division)
Tim&Linda is offline   Reply With Quote
Old 05 April 2014, 13:21   #7
Member
 
A1an's Avatar
 
Country: UK - Scotland
Town: Fort William
Make: Ribcraft 585
Length: 5m +
Engine: Yamaha F115
Join Date: Mar 2012
Posts: 2,896
RIBase
Quote:
Originally Posted by Tim&Linda View Post
well if it was me I will remove it and start again do your mixture 2.5% on warm days above 15 degrees and 4.5 % -5% on days above 10 degrees,
Blimey, you must work like lightening, I use 2% regardless of temp.
__________________
There is a place on this planet for all of Gods creatures.........right next to my tatties and gravy.
A1an is offline   Reply With Quote
Old 05 April 2014, 13:21   #8
Member
 
Tim&Linda's Avatar
 
Country: UK - England
Town: Crewe
Boat name: BLACK BOSS
Make: humber & searider
Length: 9m +
Engine: 2x200 ETEC & 2x40
MMSI: ex directory
Join Date: Jun 2013
Posts: 583
RIBase
Quote:
Originally Posted by A1an View Post
I wasn't aware they were the same, I was under the impression MEK was a cleaning solvent?
Mek is what they used to clean hypalon
__________________
Member of S.A.B.S. (South African Division)
Tim&Linda is offline   Reply With Quote
Old 05 April 2014, 13:23   #9
Member
 
Tim&Linda's Avatar
 
Country: UK - England
Town: Crewe
Boat name: BLACK BOSS
Make: humber & searider
Length: 9m +
Engine: 2x200 ETEC & 2x40
MMSI: ex directory
Join Date: Jun 2013
Posts: 583
RIBase
Quote:
Originally Posted by A1an View Post
Blimey, you must work like lightening, I use 2% regardless of temp.
No I JUST TELL HER TO WORK FASTER
__________________
Member of S.A.B.S. (South African Division)
Tim&Linda is offline   Reply With Quote
Old 05 April 2014, 13:25   #10
Member
 
A1an's Avatar
 
Country: UK - Scotland
Town: Fort William
Make: Ribcraft 585
Length: 5m +
Engine: Yamaha F115
Join Date: Mar 2012
Posts: 2,896
RIBase
Quote:
Originally Posted by Tim&Linda View Post

No I JUST TELL HER TO WORK FASTER
I take it you wear the trousers




























Because she lets you
__________________
There is a place on this planet for all of Gods creatures.........right next to my tatties and gravy.
A1an is offline   Reply With Quote
Old 05 April 2014, 13:28   #11
Member
 
Tim&Linda's Avatar
 
Country: UK - England
Town: Crewe
Boat name: BLACK BOSS
Make: humber & searider
Length: 9m +
Engine: 2x200 ETEC & 2x40
MMSI: ex directory
Join Date: Jun 2013
Posts: 583
RIBase
yes I got her permission to say that I did ask
__________________
Member of S.A.B.S. (South African Division)
Tim&Linda is offline   Reply With Quote
Old 05 April 2014, 13:30   #12
ncp
Member
 
ncp's Avatar
 
Country: USA
Town: California
Make: Avon 5.4m Searider
Length: 5m +
Engine: Yamaha 90
Join Date: Aug 2011
Posts: 1,260
There's a difference between methyl ethyl ketone and methyl ethyl ketone peroxide. You used the wrong one. Now, I'm not a chemist, but maybe straight MEK did cause a reaction. But, to be sure, you'd probably want to scrape and use the correct catalyst - methyl ethyl ketone PEROXIDE.
__________________
ncp is offline   Reply With Quote
Old 05 April 2014, 14:28   #13
Member
 
butty's Avatar
 
Country: UK - England
Town: southampton
Make: Island RIBS / custom
Length: 7m +
Engine: inboard diesel
Join Date: Jul 2003
Posts: 301
Ncp has hit the nail on the head there.

And your mixing ratio is correct, 1% is fine! Average recommends 2%, if you use too much catalyst you will cause the resin/gel to exotherme which will lead to other issues such as weakness or de lamination.

If you are mixing up a large quantity use 1% and put I a container that is shallow , this will reduce the overall temp in the pot and stop it from heating itself up too quickly.

I laminated 3 large mouldings last week in my unheated work shop all resin was mixed at 1% and it's all gone off fine.
__________________
butty is offline   Reply With Quote
Old 05 April 2014, 14:31   #14
Member
 
Country: Ireland
Town: Castlebar
Boat name: Clewless
Make: Valiant DR 490
Length: 4m +
Engine: 60 hp ETEC
MMSI: Awaitng one
Join Date: Oct 2007
Posts: 1,339
RIBase
I used the cataylist that was provided however i believe that temps were too low. I think I will have to scrape off and go again or is there another way can i flow coat over flow coat?
__________________
two stroke mick is offline   Reply With Quote
Old 05 April 2014, 14:35   #15
Member
 
A1an's Avatar
 
Country: UK - Scotland
Town: Fort William
Make: Ribcraft 585
Length: 5m +
Engine: Yamaha F115
Join Date: Mar 2012
Posts: 2,896
RIBase
I once applied the flowcoat too thin and it never went off, I believe it was so thin that the wax never sealed the surface hence it staying tacky.


I mixed up another batch the next day and applied it on top of the tacky layer, it all went off with no problems.

Maybe try a test patch?
__________________
There is a place on this planet for all of Gods creatures.........right next to my tatties and gravy.
A1an is offline   Reply With Quote
Old 05 April 2014, 14:40   #16
Member
 
Country: UK - England
Town: Royal Wootton Bassett
Length: 8m +
Engine: 250
Join Date: Jul 2008
Posts: 8,041
Mick, call me if you need to. Alex 07778 555884
__________________
whisper is offline   Reply With Quote
Old 05 April 2014, 14:40   #17
Member
 
Country: Ireland
Town: Castlebar
Boat name: Clewless
Make: Valiant DR 490
Length: 4m +
Engine: 60 hp ETEC
MMSI: Awaitng one
Join Date: Oct 2007
Posts: 1,339
RIBase
alan

I note that where the flow coat is thick, it set fine the problem is were it was applied thin/ light

tsm
__________________
two stroke mick is offline   Reply With Quote
Old 05 April 2014, 14:44   #18
Member
 
A1an's Avatar
 
Country: UK - Scotland
Town: Fort William
Make: Ribcraft 585
Length: 5m +
Engine: Yamaha F115
Join Date: Mar 2012
Posts: 2,896
RIBase
Quote:
Originally Posted by two stroke mick View Post
alan

I note that where the flow coat is thick, it set fine the problem is were it was applied thin/ light

tsm
Personally, Id lightly wipe down acetone/cellulose then recoat with flowcoat and the correct catalyst.
__________________
There is a place on this planet for all of Gods creatures.........right next to my tatties and gravy.
A1an is offline   Reply With Quote
Old 05 April 2014, 14:45   #19
Member
 
Country: Ireland
Town: Castlebar
Boat name: Clewless
Make: Valiant DR 490
Length: 4m +
Engine: 60 hp ETEC
MMSI: Awaitng one
Join Date: Oct 2007
Posts: 1,339
RIBase
alan

I take that to mean scape off the flow coat grind back down and go again.
__________________
two stroke mick is offline   Reply With Quote
Old 05 April 2014, 16:34   #20
Member
 
biffer's Avatar
 
Country: UK - England
Town: swanwick/hamble
Boat name: stormchaser
Make: custom rib
Length: 8m +
Engine: inboard/diesel
Join Date: Aug 2007
Posts: 3,848
Sounds like not enough wax additive in the Gell
__________________
biffer is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




All times are GMT. The time now is 17:00.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.