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Strong Built Establishments Builders
SBE Builders is a commercial and residential framing contractor located in Discovery Bay California.
Dedicated to the art of Carpentery & Roof Framing. We are the professionals for the future of the craft of carpentry.
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Development of Rake Crown Molding Miter Angles
Using geometry
Crown Molding Tools
crownmoldingtools.com
Upside down and backwards in a miter box or compound miter saw has been used
for the last 200+ years by the majority of carpenters to cut
crown molding
miter and bevel angles. Right sideup and backwards for rake crown molding
cuts were developed long before our time, but even today there's still
confusion about the correct crown miter and bevel angles when cutting rake
crown molding laying flat
in the miter box or compound miter saw.
By using plane geometry for developing rake crown molding profiles you can determine the correct miter and bevel angles for rake crown molding.
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Trigonometric Relationships between Tetrahedron Angles by Joe Bartok
Joe Bartok's Trigonometric Relationships between Tetrahedron Angles web page is the most significant treatise on roof framing angles in the last 100 years. If your a roof framer print out Joe's Trigonometric Relationships between Tetrahedron Angles web page and study the trigonometric relationships between each of the triangles. If your an interior trim carpenter, then just use the crown angle formulas below.
Trigonometric Crown Angle Formulas for Horizontal Plane Crown Molding Angles
Trigonometric Crown Angle Formulas for Vertical Plane Crown Molding Angles (cathedral/vaulted ceilings/rake gables)
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| Development of Tetrahedron Geometry based on Joe Bartok's Tetrahedron Developmental Geometry Development of Tetrahedron Geometry Development of Tetrahedron for Crown Molding Geometry Using Spring Angle and Wall Angle Development of Tetrahedron for Crown Molding Geometry Using Slope Angle and Corner Plane Angle Development of Tetrahedron for Crown Rake Molding Geometry |
| Crown Moulding Miter Angle and Bevel Angle Settings Calculators Crown Spring Angle = 52° Crown Spring Angle = 45° Crown Spring Angle = 38° Wall Angle Settings Rake Crown Spring Angle = 38° Rake to Horizontal Crown Spring Angle = 38° Polygon 2 Cord Exterior Rake Gable Crown Molding Miter Angle and Bevel Angle Settings Polygon 2 Cord Interior Rake Gable Crown Molding Miter Angle and Bevel Angle Settings Polygon Crown Molding Angles Development & Calculator Octagon Roof Exterior Crown Molding Angles Development Calculators Octagon Roof Interior Crown Molding Angles Development Calculators Corner A Crown Molding Calculator Corner B Crown Molding Calculator Corner C Crown Molding Calculator Corner D Crown Molding Calculator |
 | SBE Builders |
The book includes step by step instructions on developing stereotomic drawings on Art du Trait de Charpente, Trestles, Tréteau à devers, Canted Trestles, Louis Mozerolles' Joiners Table, Sawhorses, and the Saint Andrews' Cross, twisted crosses. You'll also find theories on hip rafter shift-offset, standard roof framing kernel trait drawings, German Schiften DP-Shadow Line techniques, folding net roof surface and net plane geometric development, when hip rafters collide, the Warlock Cut, and developing upper and lower claws on rafters using Axioms.
The book includes step-by-step instructions on developing stereotomic double curvature drawings for circular work in carpentry. Some of the techniques presented in this book are thousands of years in the making. As carpenters, we shouldn't have to re-invent the wheel each time we are faced with new challenges. There is a likely hood that someone, that came before us, has already refined a technique that we can use today. The tools might have changed, but the piece of wood that it is twisting and turning remains the same piece of wood.
Rafter Tools+ is a rafter calculator for complex roof framing angles that other roof framing calculators don't offer.
This iPhone app is for rough frame carpenters that don't build stairs everyday, but could use an stair app calculator to check their stair building calculations.
Build a set of stairs that you are gonna be proud of.
With Stair Tangent you can elimenate cumulative math errors when building - constructing stairs.
Crown Molding Tools
crownmoldingtools.com
