19 Jul 22:
Have a hole in your pontoon hull and not sure how to repair it? Here's how, straight out of the Laser Performance Repair Manual.
Showing posts with label backer patch. Show all posts
Showing posts with label backer patch. Show all posts
Tuesday, July 19, 2022
Saturday, November 23, 2019
1965 Alcort Sunfish WAVE 23 Nov 19 Blind Hole Patch Installation
23 Nov 19:
WAVE has a few areas of fiberglass damage, some will require that blind hole patches be installed inside the hull, where the area is not accessible from the other side. To do this we followed the LASER PERFORMANCE Repair Manual and made blind patches, they are inserted through the hole in the hull, pulled snug against the inside of the hull with strings and tied off until the epoxy dries.
WAVE has crushed fiberglass on her chine that will need to be removed and replaced. We'll file it out with a diamond file.
There are a couple of spots where there are gelcoat cracks, we'll skim over those with a sealer coat of thickened epoxy.
I made a mistake installing a transom drain plug, the plan is to repair the transom and get rid of the big hole at the waterline.
Aft keel.
Bailer hole.
A walkaround.
Good shop tables are hard to find!
We filed out the broken fiberglass bits, then sanded the edges with 60 grit on a DeWalt random orbital sander, hooked to a Dust Deputy cyclone and ShopVac. We taper the edges down so that fiberglass cloth can be overlapped. Protective gear includes a hat, goggles, respirator, gloves and a long shirt.
The starboard forward block is loose, we'll push it back in to place after the bottom is fixed.
The center forward foam block is in good shape.
We get a lot of our supplies from Jamestown Distributors, and they picked us to be on their Ambassador Team. We use their TotalBoat products alot and like them, they ship free and the cost is low. They provide some of the products free for us to use, we like that, especially the THIXO, very happy with its performance.
We also like to take the shipping boxes and repurpose them, today this box will be cut up to make up a blind patch.
The blind patch consists of a cardboard backer, that helps keep the woven roving fiberglass cloth stiff. The entire patch gets saturated with thickened epoxy, strings pull the patch flush against the inside of the hull.
We put copious amounts of TotalBoat THIXO on the cardboard, then lay the woven roving fiberglass cloth over the top of that and press the cloth down into the THIXO.
More THIXO is dispensed onto the blind patch.
The patches are inserted into the hull and pulled tight against the inside, tied off with the strings to keep the backer in place while the epoxy dries.
Added THIXO to the edges of the bailer hole.
We might try something different, use a thick layer of THIXO to replace the fiberglass cloth. I'll have a better idea when I sand the repair.
Log of WAVE.
WAVE has a few areas of fiberglass damage, some will require that blind hole patches be installed inside the hull, where the area is not accessible from the other side. To do this we followed the LASER PERFORMANCE Repair Manual and made blind patches, they are inserted through the hole in the hull, pulled snug against the inside of the hull with strings and tied off until the epoxy dries.
WAVE has crushed fiberglass on her chine that will need to be removed and replaced. We'll file it out with a diamond file.
There are a couple of spots where there are gelcoat cracks, we'll skim over those with a sealer coat of thickened epoxy.
I made a mistake installing a transom drain plug, the plan is to repair the transom and get rid of the big hole at the waterline.
Aft keel.
Bailer hole.
A walkaround.
Good shop tables are hard to find!
We filed out the broken fiberglass bits, then sanded the edges with 60 grit on a DeWalt random orbital sander, hooked to a Dust Deputy cyclone and ShopVac. We taper the edges down so that fiberglass cloth can be overlapped. Protective gear includes a hat, goggles, respirator, gloves and a long shirt.
The starboard forward block is loose, we'll push it back in to place after the bottom is fixed.
The center forward foam block is in good shape.
We get a lot of our supplies from Jamestown Distributors, and they picked us to be on their Ambassador Team. We use their TotalBoat products alot and like them, they ship free and the cost is low. They provide some of the products free for us to use, we like that, especially the THIXO, very happy with its performance.
We also like to take the shipping boxes and repurpose them, today this box will be cut up to make up a blind patch.
The blind patch consists of a cardboard backer, that helps keep the woven roving fiberglass cloth stiff. The entire patch gets saturated with thickened epoxy, strings pull the patch flush against the inside of the hull.
We put copious amounts of TotalBoat THIXO on the cardboard, then lay the woven roving fiberglass cloth over the top of that and press the cloth down into the THIXO.
More THIXO is dispensed onto the blind patch.
The patches are inserted into the hull and pulled tight against the inside, tied off with the strings to keep the backer in place while the epoxy dries.
Added THIXO to the edges of the bailer hole.
We might try something different, use a thick layer of THIXO to replace the fiberglass cloth. I'll have a better idea when I sand the repair.
Log of WAVE.
Tuesday, October 3, 2017
1980 AMF Sunfish Viper 03 Oct 17 Gudgeon and Backer Blocks
03 Oct 17:
The work dolly has worked out great. The bunks articulate to support the boat in a lot of different orientations!
Flushed out a pound of dirt.
Checked out the gudgeon backer plate, it is threaded for #8-32 screws and fiberglassed into the hull.
Upgraded the dolly wheels to solid rubber, 6 inch swivels. We can roll the dolly with ease from the carriage house to the backyard Sunfish Shack now.
Replaced the bow handle backer block with cypress. Sealed it with TotalBoat High Performance epoxy and bedded it in THIXO. Rpelaced the halyard block backer and cleat backer as well.
Built up the bow flange with one layer of woven roving then 3 layers of 4 oz cloth, saturated with epoxy.
Epoxy backer patch for the hull, 6 oz fiberglass cloth held in place by a piece of cardboard tied snug with strings.
Log of Viper.
The work dolly has worked out great. The bunks articulate to support the boat in a lot of different orientations!
Flushed out a pound of dirt.
Checked out the gudgeon backer plate, it is threaded for #8-32 screws and fiberglassed into the hull.
Upgraded the dolly wheels to solid rubber, 6 inch swivels. We can roll the dolly with ease from the carriage house to the backyard Sunfish Shack now.
Replaced the bow handle backer block with cypress. Sealed it with TotalBoat High Performance epoxy and bedded it in THIXO. Rpelaced the halyard block backer and cleat backer as well.
Built up the bow flange with one layer of woven roving then 3 layers of 4 oz cloth, saturated with epoxy.
Epoxy backer patch for the hull, 6 oz fiberglass cloth held in place by a piece of cardboard tied snug with strings.
Log of Viper.
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