Someone getting started on the model.
Tim Uhler and Ken Lyons drawing table.
Billy brought his book "Traite Theorique Et Pratique Charpente" (1850) with drawings of roof framing kernels and geometric roof framing development.
Another book that Billy brought to class with roof framing geometry and dormers.
Billy explaning the geometric drawing sequence for the eyebrow dormer.
Transferring geometric line drawings to the lumber to build the eyebrow model.
Billy explaning the inner valley development with Josh and Lavrans looking on.
Billy and Lavrans talking about the inner valley development.
Tim Uhler, Ken Lyons and Billy.
Sim Ayers completed eyebrow model. Good thing my camera isn't very good.
I think this is Lavrans completed eyebrow model.
Josh's completed eyebrow dormer model.
Ken Lyons and his completed eyebrow dormer model.
I had Billy point at my eyebrow dormer model so I could tell people he wasing pointing out my mistakes on my first eyebrow dormer model.
My first mistake was cutting and sanding down the face rafter. Once the face rafter was short I had to cut down the roof surface valley, which made the secondary rafters to long.
A couple weeks after the class I started in on another eyebrow model. Here I used two pieces of 1x8 popular and transfered SB1 to both pieces of lumber. Then I drew in the face rafter radius's.
Using 1x8 popular with square edges I was able to draw the radius's for the roof surface and inner radius rather eaisly . The furthest radius line above is V1 measurement.
Face rafter ready to cut.
I tried cutting the face rafter radius with an electric scroll saw. That didn't work out very well.
Started all over again. This time I put the roof slope bevel on the lumber before I started in on the face rafter.
SB1 lines on both pieces of 1x8 and the roof slope bevel on the bottom edge of each piece.
Making off the radius points. Notice Lavrans dividing points on the bottom piece. Thanks again Lavrans for the dividing trick.
Tangent circles for the eyebrow dormer radius allow us to draw in the radius line from one circle to the other circle so we know where the radius lines start and stop.
Drawing in radius R2.
Radius R2 is the top of the face rafter.
Drawing in radius R1.
Face rafter radius's complete.
Lavrans dividing trick.
Checking my 4" eyebrow dormer height. Right on the money this time.
Drawing in the inner raius.
Inner radius development.
Inner radius lines being drawn.
Inner radius lines complete.
Double checking the 4" eyebrow dormer height to make sure the reference points were correct.
Drawing in the V1 radius bevel.
V1 radius bevel lines complete.
Face rafter cut and this time I sanded to the lines to make sure the face rafter didn't end up short in length.
Just a little more sanding.
Ready to start in on the roof surface valley.
Still need just a little more sanding.
Checking the new eyebrow dormer model with the one I built in class.
Drew out the eyebrow dormer model development in Auto CAD and had the geometric drawings printed out full scale. Here I'm working on the roof surface valley. Notice how I have already put the roof slope bevel on the bottom of the roof surface valley material.
Checking to make sure the lumber is right on the geometric development lines.
Roof surface valley peak.
Cutting the roof surface valley rafter peak on the compound miter saw with a angle template for the correct angle guide.
Angle template guide.
Lots of reference lines on this page for the placement of the lumber.
Roof surface valley lines tranfered to the lumber.
Roof surface valley ready to cut.
Added the inner valley header and some more rafters to the model.
Checking the roof surface valley rafter peak cuts on the model.
Yea, baby. Lines match up nicely.
Roof surface valley rafters cut. Checking to see if they still match the geometric development.
Note: don't nail up your roof surface valley rafters until you cut and install your inner valley rafter.
Inner valley lines transfered to the lumber.
Lines match up correcty.
Checking the V3 inner valley bevel.
Inner valley cut and installed.
Just need a little more sanding on the V3 inner valley bevel.
Secondary rafter development tranfered to the lumber.
Checking the secondary rafter lengths on the model with the geometric line drawing lengths.
Secondary rafters cut and installed.
Secondary rafters fit correctly this time.
Ready to sheetrock the inner valley.
Sweet.
Checking it from all directions.
Ready for roof sheathing.
Added some roof sheathing to the main pitch rafters and some roof decking to the eyebrow dormer rafters.
Even staggered the roof sheathing plywood.
