SBE Builders

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.

Octagon Roof Interior Crown Molding Angles Development Calculators

 


Corner A Crown Molding Calculator
Corner B Crown Molding Calculator
Corner C Crown Molding Calculator
Polygon Crown Molding Angles Development & Calculator

 


Corner A Crown Molding Calculator
Corner B Crown Molding Calculator
Corner C Crown Molding Calculator
Polygon Crown Molding Angles Development & Calculator
Interior Crown Molding Miters & Bevels for Octagon
This image is for a plan angle of 135° with the crown going from horizontal to a vertical slope.
Crown Slope Angle = 10.37993°
Corner Angle = 129.76216°
Crown Miter Angle = 24.75746°
Crown Bevel Angle = 4.38648°

This image is for a plan angle of 135° with the rake crown turning the vertical plane corner.
Crown Slope Angle = 10.37993°
Corner Angle = 140.23784°
Crown Miter Angle = 19.58065°
Crown Bevel Angle = 3.51282°

Front view of both Octagon crown molding corners turning in the vertical plane.

You can see from this image that the backside of the crown molding needs to be beveled to rest flat against the ceiling.

You can see from this image that the backside of the crown molding needs to be beveled to rest flat against the ceiling.

 


  
  
SBE Builders
SBE Builders


Holy Grail of Roof Framing Geometry & Trigonometry

Book I & Book II. These roof framing books were written to make complex roof framing simple..

The Art of the Line for Carpentry

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.

HG IV Circular Work in Carpentry

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+ for iPhone

Rafter Tools+ is a rafter calculator for complex roof framing angles that other roof framing calculators don't offer.

RafterTools+

Stair Tangent for iPhone

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.

Stair Tangent
stairtangent.com

Crown Molding Tools
crownmoldingtools.com

Crown Molding Tools  

Roof Framing Geometry Blog

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