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Woodworking blog entries tagged with 'lofting'

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Sunshine Yacht Tender Model #5: Stongback and Molds Pt. 1

06-07-2010 07:06 PM by kharder | 3 comments »

Enough with the lofting, on to working with some wood and actually building something. I cut two 4”x6” pieces of 1/4” plywood for each station mold and matched up the most square cornors to be the bottom and inside edges of bookmatched pairs. I lined up the edges and clamped the sets so that each pair could be temporarily attached together with screws for shaping. I pre-drilled 1/16” holes so the plywood wouldn’t split and tried to get the screws along t...

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Sunshine Yacht Tender Model #4: Lofting Pt. 3

04-21-2010 07:37 PM by kharder | 2 comments »

I have pressed on with the lofting and got the stations, stem pieces and skeg pieces lofted. The basswood didn’t like taking all the turns and my two 24” pieces are now a handfull of 2-4” inch pieces from all the breaks. The stations went together alright with some minor changes to fair the curves. they are drawn upside down so that when i make templates they all have a common bottom reference point for laying out the molds. I drew out all the stem pieces so that i c...

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Sunshine Yacht Tender Model #3: Lofting Pt. 2

04-01-2010 02:46 PM by kharder | 1 comment »

I bought some 1/4” x 1/16” x 24” basswood strips to use as batons and continued with the lofting. I’ts about like doing the full size lofting with 3/8” planks and crayons, but it’s a good start. I started with the sheer line in both profile and plan view to get a sense of the shape. I also lofted the keel and keelson. And then the stem. And finally the deadwood. The upper waterlines all turned into a bit of a mess because they are so clos...

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Sunshine Yacht Tender Model #2: Lofting Pt. 1

03-29-2010 03:08 AM by kharder | 4 comments »

I started the process of lofting, drawing the 3D shape hull from front top and side views, based on the measurements from the plans using a scale of 2” = 1’. I have followed the same process that is required for a full size hull, but my scale will result in a hull 21” long and 8” wide. To create the full sized enlargement of the lines of the hull, the plans list points along the various curves which are carefully laid out on a grid and connected with long flexible ...

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Building a Traditional Wooden Boat #13: The First Plank

02-05-2010 07:15 AM by MattD | 20 comments »

The First Garboard Plank The first plank is on! It has been the most difficult part of the build so far. I’ve gone through 4 planks to get it right. For my fellow LJers who may be wondering, I’ve put in a few hours here and there, but I’ve taken quite a bit of time away from the project since the holidays. I’m exciting to be focused again. The challenge with this is getting the plank flush and tight into the rabbit along the keel. It’s a tough plank bec...

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Building a Traditional Wooden Boat #12: Lining Off - Second Attempt

11-16-2009 02:42 AM by MattD | 4 comments »

I finished lining off the planks today. Lining off is the process with which you project the final plank layout onto the hull. My first attempt at this didn’t go so well. Thanks to some suggestions from some fellow lumberjocks, I took the time to learn more about the process and I’m much happier with the results. The book, Building Small Boats by Greg Rossel, as recommended by DaveR, is an exceptional resource and I basically used the process in the lining off chapter. Results ...

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Building a Traditional Wooden Boat #11: Stem to Keel and Lining Off

10-19-2009 02:47 AM by MattD | 11 comments »

Just a few more steps left before I can start putting the planking on the sides. Cutting in the Rabbet Between Stem and Keel The next crucial step is cutting in the rabbet between the Stem and Keel. This was done entirely by hand with a few sharp chisels. I used a small piece of wood (3”x1”x3/8”) as a template, representing the plank, to ensure a smooth transition as I cut away the rabbet. Here is the before picture: And the after picture. This was done on both ...

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Building a Traditional Wooden Boat #10: Cutting Stem and Keel Rabbet

09-30-2009 04:44 AM by MattD | 3 comments »

This next part is cutting the rabbet into the Keel and Stem. The rabbet is a groove for planking to butt into. The rabbet must be accurately cut in order to form a tight seal. The rabbet for sunshine runs down both sides of the stem as shown and continues along the keel to the stern. Keel Rabbet Cutting the Rabbet in the Keel was relatively easy since I had already beveled the keelson from the lofted lines in the Stem and Knee - Part 2 section. To me, it seemed practical to try ...

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Building a Traditional Wooden Boat #9: Attaching Transom, Finding Planking Lumber and Copper Rivets

09-29-2009 03:56 AM by MattD | 9 comments »

It’s been a busy month for other things, but I’ve made some good progress on the boat. I’ve also managed to find some great planking lumber, with a great story behind it, which I’ll write about a bit below. But first, update on the transom which now completes the stern. The transom is attached to sternpost with 5 countersunk #10 bronze screws which are covered with matching cherry plugs. Later on, I’ll epoxy in and cut the plugs off flush. And a ...

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Building a Traditional Wooden Boat #8: Keel, Keelson, Skeg and Sternpost - Part 1

08-17-2009 06:02 AM by MattD | 5 comments »

This is the construction of the Keel, Keelson, Skeg and Sternpost. These solid oak parts form the bottom backbone of the boat. I started by cutting out the shape of keel and keelson by transfering the measurements from the lofting. The keel is the thicker piece which be on the very bottom of the boat. The next step is to put a rolling bevel on the edge of the keelson. The intention is for the bottom planking to fit perfectly into a beveled “notch” that is carved into the...

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