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breausaw
Joined: 18 Jan 2006 Posts: 1222 City/Region: Anchorage
State or Province: AK
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: Triple J
Photos: Triple J
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Posted: Wed Apr 16, 2008 2:26 pm Post subject: Repairing small drill holes in hull |
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G/flex Epoxies, has any used this stuff?
I have a couple of small holes drilled in the bottom of my transom, mistake holes installing a transducer. Yea I know, measure twice drill once.
I used 5200 initially to seal the holes but think a more permanent fix is in order
One kit comes with syringes so you can inject and fill the entire whole, then I’d just tape it off tell cured.
Also, I need to move my GPS and VHF antennas outboard and was also considering using the G/flex for repairing those holes.
http://www.gougeonbrothers.com/G-flex/ _________________ Jay
2007 22ft C-Dory Triple J 2007-2012
2007 25ft C-Dory Triple J 2012-2018
Boatless for now but looking |
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breausaw
Joined: 18 Jan 2006 Posts: 1222 City/Region: Anchorage
State or Province: AK
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: Triple J
Photos: Triple J
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Posted: Wed Apr 16, 2008 3:42 pm Post subject: |
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Ok, I know this topic has been hashed out before, but this G/flex is relatively new. I’ve read though most threads on hole repair and haven’t come across any information here on this new epoxy. |
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matt_unique
Joined: 27 Feb 2007 Posts: 1881 City/Region: Boston
State or Province: MA
C-Dory Year: 2007
C-Dory Model: 255 Tomcat
Vessel Name: Napoleon
Photos: Napoleon
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Posted: Wed Apr 16, 2008 4:12 pm Post subject: Gman |
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I have not used it personally so I would go with the tried and true stuff. I would use System III or West System epoxy (hardener and resin of course) and squirt it into the hole with a syringe until a little comes out, then quickly insert a small piece of a wood or plastic dowel sharpened to a point with a pencil sharpener. This will cap the hole keeping the epoxy inside and ensure there are no air voids. Make sure the very outside of the hole and the dowel is totally covered with epoxy and flush with the outside for future painting, etc. _________________ Captain Matt
Former owner of Napoleon (Tomcat) Hull #65 w/Counter Rotating Suzuki 150's. |
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breausaw
Joined: 18 Jan 2006 Posts: 1222 City/Region: Anchorage
State or Province: AK
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: Triple J
Photos: Triple J
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Posted: Wed Apr 16, 2008 7:26 pm Post subject: |
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Since the holes I miss drilled are just below the transducer mount I was considering running a couple of stainless screws in the holes using 5200 or 4200, any problem with this? I’m not that concerned with esthetics here, you couldn’t even see the screws.
Just know I’m going to get bashed for suggesting this!
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ryder
Joined: 06 Oct 2007 Posts: 145 City/Region: duncan
State or Province: BC
C-Dory Year: 2008
C-Dory Model: 22 Cruiser
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Posted: Wed Apr 16, 2008 8:26 pm Post subject: |
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If it was me i would fill the holes with marine tex. great stuff.
regards
ryder _________________ "Shoot for the moon , if you miss you're still among the stars" |
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matt_unique
Joined: 27 Feb 2007 Posts: 1881 City/Region: Boston
State or Province: MA
C-Dory Year: 2007
C-Dory Model: 255 Tomcat
Vessel Name: Napoleon
Photos: Napoleon
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Posted: Wed Apr 16, 2008 11:06 pm Post subject: Holes |
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breausaw wrote: | Since the holes I miss drilled are just below the transducer mount I was considering running a couple of stainless screws in the holes using 5200 or 4200, any problem with this? I’m not that concerned with esthetics here, you couldn’t even see the screws.
Just know I’m going to get bashed for suggesting this!
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Ha ha, no bashing but it sounds like you already know the screws with 42/5200 is not as good a solution as using epoxy and capping. I would do everything possible to minimize the risk of water entry ruining your transom. |
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thataway
Joined: 02 Nov 2003 Posts: 20875 City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
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Posted: Wed Apr 16, 2008 11:12 pm Post subject: |
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This is the reason I suggest that transducers be mounted on a piece of Starboard--not too late to do that. Just drill the holes out, fill with epoxy (MarineTex works fine) and then drill a new pilot hole and attatch the starboard (back cross hatched and undercut for adherance of 5200).
The screws just with 5200 are not a good idea. Fill the hole properly. Use toothpicks to work the MarineTex into the holes. Putting liquid epoxy in first is a good idea. You may already have a small area of wet core--and I would probably drill out the hole to good glass and wood core, before putting in the epoxy. _________________ Bob Austin
Thataway
Thataway (Ex Seaweed) 2007 25 C Dory May 2018 to Oct. 2021
Thisaway 2006 22' CDory November 2011 to May 2018
Caracal 18 140 Suzuki 2007 to present
Thataway TomCat 255 150 Suzukis June 2006 thru August 2011
C Pelican; 1992, 22 Cruiser, 2002 thru 2006
Frequent Sea; 2003 C D 25, 2007 thru 2009
KA6PKB
Home port: Pensacola FL |
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Sea Wolf
Joined: 01 Nov 2003 Posts: 8650 City/Region: Redding
State or Province: CA
C-Dory Year: 1987
C-Dory Model: 22 Cruiser
Vessel Name: Sea Wolf
Photos: Sea Wolf
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Posted: Thu Apr 17, 2008 12:26 am Post subject: |
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At first, the 5200 would seem to have the advantage of being "wetter" and probably a better seal if you've penetrated into the balsa or a plywood core, but may shrink a little upon curing and have to be filled in a second time for a flush surface. It's liquid nature makes it harder to work with as it wants to run out of the hole, and the set up time is much longer than an epoxy. However, .........
I like Marinetex epoxy for situations where I know I can get it worked into the wood core with a tool and then fully fill the hole. The epoxy with a fiberglass filler is much stronger than a bedding compound like 5200. It sets up faster, too! You can tint the appliance white color down to your hull to match.
Use a bonding filler (Marinetex) to solidly fill a hole or space.
Use a bedding compound (5200) to seal a crevice or make a gasket under a hardware piece.
I have no experience with G/Flex.
Joe. _________________ Sea Wolf, C-Brat #31
Lake Shasta, California
"Most of my money I spent on boats and women. The rest I squandered'. " -Annonymous |
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tsturm
Joined: 01 Nov 2003 Posts: 1136 City/Region: Soldotna
State or Province: AK
C-Dory Year: 2003
C-Dory Model: 25 Cruiser
Vessel Name: JMR TOO
Photos: JMR-TOO
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Posted: Thu Apr 17, 2008 1:42 pm Post subject: |
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I drill out the hole slightly larger. Mix up my epoxy, load it into a syringe(sp?) W/O needle and inject the epoxy into the clean hole then Quickly cover with tape until it cures. sand flush & paint |
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breausaw
Joined: 18 Jan 2006 Posts: 1222 City/Region: Anchorage
State or Province: AK
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: Triple J
Photos: Triple J
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Posted: Thu Apr 17, 2008 3:51 pm Post subject: |
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tsturm wrote: | I drill out the hole slightly larger. Mix up my epoxy, load it into a syringe(sp?) W/O needle and inject the epoxy into the clean hole then Quickly cover with tape until it cures. sand flush & paint |
This is exactly how I intended to fill the hole, but I’d attach 14g needle to back-fill the hole pulling the needle out as if fills before taping it off.
Ok, the screw idea using 5200 is the lazy man’s cure.
So now I’m concerned with attaching the transducer with 5200 on the screws, is there a better alternative? My dealer said they use 5200 exclusively and recommended it for this particular application.
Bob’s idea using Starboard deserves consideration but unless this board comes in Blue the color contrast would be undesirable. |
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tsturm
Joined: 01 Nov 2003 Posts: 1136 City/Region: Soldotna
State or Province: AK
C-Dory Year: 2003
C-Dory Model: 25 Cruiser
Vessel Name: JMR TOO
Photos: JMR-TOO
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Posted: Thu Apr 17, 2008 5:04 pm Post subject: |
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breausaw wrote: | tsturm wrote: | I drill out the hole slightly larger. Mix up my epoxy, load it into a syringe(sp?) W/O needle and inject the epoxy into the clean hole then Quickly cover with tape until it cures. sand flush & paint |
This is exactly how I intended to fill the hole, but I’d attach 14g needle to back-fill the hole pulling the needle out as if fills before taping it off.
Ok, the screw idea using 5200 is the lazy man’s cure.
So now I’m concerned with attaching the transducer with 5200 on the screws, is there a better alternative? My dealer said they use 5200 exclusively and recommended it for this particular application.
Bob’s idea using Starboard deserves consideration but unless this board comes in Blue the color contrast would be undesirable. |
Mine are put on with 5200. I do like the screw & glue a piece of 3/4" HDPE to the transom & mounting items to it. Maybe next year. I have been doing good on the kings @ Homer the last 2 weeks |
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thataway
Joined: 02 Nov 2003 Posts: 20875 City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
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Posted: Thu Apr 17, 2008 6:30 pm Post subject: |
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Interesting that the color of Starboard white would be objectionable. How about the transducer itself? Maybe I look at more the function of a boat than the asthetics of a blue gelcoat below the waterline. You found out the reason for the Starboard--that is that often DS transducers have to be repositioned, and you don't want to make swiss cheese out of the transom--with some risk of water intrusion into the transom core. I was recently on a friends "new" mainship 34--6 different depth sounder transducers in the hull!--Only one of them worked and matched the current sounder--and it is old, so that another one will be added--or better yet, one of the ones there removed and replaced....
But the starboard can be redrilled a number of times with no risk to the transom. When you put screws into the transom, you should not just screw in--you should over drill the hole, probably best to slightly undercut, fill with epoxy--and then pilot hole for the transducer screw, and bed in 5200. 5200 is not a cure all and does not always make a water tite seal. |
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tsturm
Joined: 01 Nov 2003 Posts: 1136 City/Region: Soldotna
State or Province: AK
C-Dory Year: 2003
C-Dory Model: 25 Cruiser
Vessel Name: JMR TOO
Photos: JMR-TOO
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Posted: Thu Apr 17, 2008 6:47 pm Post subject: |
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breausaw wrote: |
Bob’s idea using Starboard deserves consideration but unless this board comes in Blue the color contrast would be undesirable. |
That is what the Black bottom paint is for |
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breausaw
Joined: 18 Jan 2006 Posts: 1222 City/Region: Anchorage
State or Province: AK
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: Triple J
Photos: Triple J
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Posted: Thu Apr 17, 2008 7:37 pm Post subject: |
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thataway wrote: | Interesting that the color of Starboard white would be objectionable. How about the transducer itself? Maybe I look at more the function of a boat than the asthetics of a blue gelcoat below the waterline. You found out the reason for the Starboard--that is that often DS transducers have to be repositioned, and you don't want to make swiss cheese out of the transom--with some risk of water intrusion into the transom core. |
Touché Bob, you’ve convince me. I have at least 3 weeks before Triple J hits the water and with my luck the dang transducer will have to be repositioned.
Now I have to find a source for ¾ inch High Density Polyethylene Marine Board here in Anchorage, maybe J.M.R. II can tell my where he got his. |
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tsturm
Joined: 01 Nov 2003 Posts: 1136 City/Region: Soldotna
State or Province: AK
C-Dory Year: 2003
C-Dory Model: 25 Cruiser
Vessel Name: JMR TOO
Photos: JMR-TOO
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Posted: Thu Apr 17, 2008 8:45 pm Post subject: |
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breausaw wrote: | thataway wrote: | Interesting that the color of Starboard white would be objectionable. How about the transducer itself? Maybe I look at more the function of a boat than the asthetics of a blue gelcoat below the waterline. You found out the reason for the Starboard--that is that often DS transducers have to be repositioned, and you don't want to make swiss cheese out of the transom--with some risk of water intrusion into the transom core. |
Touché Bob, you’ve convince me. I have at least 3 weeks before Triple J hits the water and with my luck the dang transducer will have to be repositioned.
Now I have to find a source for ¾ inch High Density Polyethylene Marine Board here in Anchorage, maybe J.M.R. II can tell my where he got his. |
First try would be B&J commercial
I have seen HDPE in black also |
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