Wednesday, April 20, 2011

Inwales

Took forever but all of the inwale spacers are glued in and epoxy coated and sanded, ready for inwales to be attached.  I'm shaping the breasthook and knees before gluing in the inwales so that I have room to adjust things.

All spacers glued on ready to fit inwales.

All of the sidearm tops are hidden by strategically placed inwale spacers.

Trimming the inwales to length.

Fitting the breasthook.  Took a while fitting the funky angles. No epoxy yet.

I was not crazy about how the daggerboard case top was looking so I made a ply cover for it that I like much better.  Blue tape is masking for big fillets to hide the gaps in the butt splices. 


Took a few hours off from building to go see all the cool boats at the annual Cortez Small Craft Festival. Click on the slide show to go to the Picasa web album.


Total time to date: 347hrs

Monday, April 11, 2011

Gunwales

I decided to make the gunwales a bit wider (10mm to be exact) than stock.  The stiffer gunwale faired out a couple of flat spots around bulkhead #3.  The decision was also driven by material on hand.  I had 3/4" thick doug fir and Dave gave me a few of his 1/4" thick mahogany kayak strips to cap the gunwales with.  As a side benefit, hiking should be more comfortable on the bum.  Before gluing on the gunwales I shaped the stem. 

Used a piece of Dacron line soaked in epoxy to form the stem.  Heard of this technique being used on the leading edges of dagger boards and rudders.  Worked well and is tough as nails, except it fuzzes when sanded.  Not an issue here as the whole thing gets a layer of fiberglass tape over it.  Will have to experiment with other types of line, maybe nylon will sand nicely. 

Covered the wet epoxy with clear packing tape to shape the rope as much as possible.  Very little sanding was needed to blend the stem into the hull sides.

17 ft douglas fir gunwale strips laminating.

Went to Anderson Lumber in St Pete to get the gunwales milled to size.  The guys at Anderson are super nice and real helpful.  Here the laminated gunwale strip is going through a 1930's vintage 30" monster, cast iron, thicknesser.  

That machine is amazing.  Imagine 80 years in industrial service.

Fred and assistant cutting the bevel on the underside of the gunwale.

My wood shop, well maybe not.  Anderson Lumber's main shop.

Got the gunwales home and clamped to the sides in order to shape the bow.  Used a string line to find the location and angle of the gunwale cut.  Feels good to see the string line, attached to the center of the transom, bisect the dagger board case and end up in the very middle of the stem.  Maybe the boat is turning out straight.

Marking the cut.

Clamped a block of wood to act as a fence.  I stick a bit of sandpaper to the block so that is resists moving around and does not have to be clamped tightly.

Pull saw does the trick.  I eyeballed the vertical angle.

Cut and cleaned up.  You can see the sanded rope stem here.

Since the gunwales will be capped with mahogany, I decided to run a strip of it down the middle of the breast hook. 

Fitting up the mahogany strip.

After the gunwales were cut and fitted at the bow I screwed them to the hull sides making sure that each temporary screw hole would later be hidden by the inwale spacers.  This let me eyeball everything for fairness without the clamps getting in the way.  It also decreased the alingnment drama during gluing.

Can you guess what is going on here?  Gunwales gluing, but the very last inch or so, aft of the clamps, was slightly pulling away from the hull due flex in the ply.  So this rig applies just the right amount of pull in the right direction to close the gaps.  Note the dead blow hammer used as lever arm weight adjuster.  Very proud of this rig.

Mmmm me likey!

Total time to date: 311hrs

Sunday, April 3, 2011

Inwale spacers

The router is getting a workout.  I used a flush trim bit to trim the seat tops flush with the bulkheads then hit them with a roundover bit.  Set up a jig on my plunge router to cut the inwale spacers with a semicircular cut on each end.  Took most of the afternoon to do it but they look good.

Router with 3/4" bit screwed to wooden jig that centers a 3/4" wide piece of cedar under the bit.

Six foot long, 3/4" wide cedar inwale stock slid into jig.

3/4" thick cedar strip in jig.  Note stop that sets the proper length for the spacer without crushing the fragile tips.

Plunge cut begins.

A lot of noise and dust later we have 52 spacers,  + a few spares.

A quick sanding with 120grit wrapped around a 3/4" dowel cleans up the cutouts.

Boat shed in full swing.


 Total time to date: 287hrs

Center case, and seat top fillets

Glued the reinforcing gusset to the front of the center case before attaching the center case to the hull.  The gusset helped hold the center case square.

Center case smeared with thickened epoxy, ready to set in hull.

Only one bar clamp was needed to hold it in place.

Masked seat tops for filleting. 

Center case glued in.  Center seat side cleats are also on.  Leaving the center seat off for now for easy access to some finish work I need to do underneath.

Total time to date: 278hrs