[Woodcarver] Drafting pyramids

[WorkingInWood]

Hi Jean,
As you have discovered drawing a pyramid in 3d is a little tricky.  To build one that appears to be a 600 triangle when viewed from the side you need 4 sides:
Base length = 10"
Side lengths = 11 3/16"
Angle (base to sides) = 63.40
Angle (top between sides) = 53.10

When this triangle is tilted back 300 to meet the other three sides the resulting pyramid will be 10" across the base and 8.66" high at the apex just like a 600 triangle.
I hope this helps.  If you require mitre angles please let me know and I'll try to draw them up for you (I'll need material thickness).

Larry


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Hello folks,
I want to build, then relief-carve, a mantel clock
shaped as a square-based pyramid. If anyone has
experience in drafting the angles/bevels needed to
construct one, I'd appreciate hearing from you. I've
drawn a triangle that I like and which would look good
with my 4" round clockface mounted into it--I started
with a 10 inch baseline; the other two legs of the
triangle (when drafted at a 60 degree angle as
measured from each end of my baseline) meet at a point
about 8-3/4 inches high at the tip. I'm not married to
this dimension, it just looked nice, and gave me a
pleasing size for a mantel clock with a 4" face.
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