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Woodworking blog entries tagged with 'layout boat'

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Building a KARA Hummer Layout Duck Boat #7: Sealing the Hull Interior

05-20-2015 01:28 AM by DustyMark | 4 comments »

Objective This boat is going to get wet and stay wet for days at a time. I plan to seal the interior with epoxy to give it at least some protection from the elements. My main concern was with the plywood. That is sealed well with the fiberglass cloth. The keel, gunnels, and ribs will be sealed by caulking the seams where they meet the plywood with thickened epoxy and coating the rest with unthickened epoxy. Caulking I imagine a builder could use silicone caulk to seal the joints,...

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Building a KARA Hummer Layout Duck Boat #6: Applying the Plywood Hull Panels

05-19-2015 08:37 PM by DustyMark | 4 comments »

Fiberglass Experiment I applied a layer of fiberglass cloth to the plywood hull panels before work, betting they would be “green” cured in the afternoon upon my return. Using Raka 127 Resin and Raka 350 hardener at 72 degrees and 48% humidity the fiberglass was set perfectly in about 8 hours. It was bonded, yet flexible enough to not restrict the plywood from curving around the hull ribs. The epoxy is wet into the fiberglass cloth with a foam roller. I never pay...

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Building a KARA Hummer Layout Duck Boat #5: Fitting the Plywood Hull Panels

05-18-2015 03:25 AM by DustyMark | 0 comments »

Overview The frame is complete and it’s time to apply the 1/4” Marine Douglas Fir plywood hull panels. The plan accounts for nailing these panels in place without glue and sealing them with epoxy later. My plan is to apply 2.3 ounce fiberglass cloth to the inside surface with a coat of epoxy before applying the panels. The potential advantage is a very durable/waterproof inside hull surface. The disadvantage is that I must fit the panels prior to final application and I h...

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Building a KARA Hummer Layout Duck Boat #4: Installing Anchor Pole Through-Hull Brackets

05-14-2015 12:22 PM by DustyMark | 0 comments »

Requirement An option during the build is to install anchor pole through-hull brackets. Anchor poles are pushed through the hull and into the marsh bottom to hold the layout boat in place in shallow water. I figured that if one was good, two would be even better to hold the bow and stern in place during crosswind set-ups of a decoy spread. Anchor poles are quicker and won’t get snagged in decoy lines like a regular anchor and line could. I installed braces of 8/4 stock, leftove...

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Building a KARA Hummer Layout Duck Boat #3: Planing the Gunnels

05-12-2015 10:03 PM by DustyMark | 2 comments »

Tools for the Job Planing the gunnels requires a sharp hand plane, a straight edge and a flexible stick. I use a 10” smoothing plane for this task since it is easier to handle than a longer plane and much of the work is on a curve. On larger boats, I’ve used a hand-held power planer to good effect. I started with that and it seemed like overkill for 3/4” gunnels. Rib Transitions The angle that the plywood skin will land on the gunnel changes throughout the length...

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Building a KARA Hummer Layout Duck Boat #2: Assembling the Upper Frame

05-12-2015 04:56 AM by DustyMark | 0 comments »

Strategy I let the epoxy cure on the lower frame for about 12 hours before proceeding with the upper frame. I dry assembled the parts with screws before gluing to ensure everything fit. I continue to use epoxy, thickened with colloidal silica to a mayonnaise consistency, to glue each joint in the boat. I never figured out how the designer fastened the plywood to the gunnels. In the boats I’ve built in the past, the gunnels are planed to an angle that gives the deck or hull ply...

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Building a KARA Hummer Layout Duck Boat #1: Building the Lower Frame

05-11-2015 07:00 PM by DustyMark | 6 comments »

The Requirement I moved back to MN in June 2014, after nearly 30 years away, and my brother quickly introduced me to duck hunting. We’re not on any of the major flyways here, so we need to put everything in our favor possible. We read about the advantages of layout boats in providing maximum concealment from wary ducks and talked about it in the duck blind all last season. Our hunting party consists of my brother, my nephew, and me and we decided to build three one-man layout boat...

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