Hello, In order to facilitate the collection of bees for making a new bee colony I wanted to design a rectangular funnel, fixing 4 inclined surfaces together. When constructing the funnel I noticed that the angle between the 4 parts, that is 90 degrees in Sketchup, may only be more or less 70 degrees, which may only be due to the inclination I went back to the Sketchup design and the angle remains still 90 degrees! What more is, not all surfaces are filled and I don’t understand why. Here attached the file. Kind regards Alooha 2 sides of a rectangular funnel.skp (37.7 KB)

the cuts are not in the same plane, a better approach, make a solid cube , scale the top then offset the sides, add the miters, make one side a component, delete rest and copy rotate this [pyramid funnel]

Hi @pcmoor / Philip, the video isn’t public, unfortunately.

is it working now though private the link should be working now

Thanks you, now after reloading it seems to work. Lets see what great solution you came up with. Have a great Day.

Hi Meanwhile I had discovered by myself that there is a problem with the geometry, but I was not able to correct it (to fill the pane). Your method is much more clever. But my main problem remains: in Sketchup the angle between the sides is 90 degrees (or 2 times 45 as in your construction), but in reality not, and I don’t understand why. I’ll try to take a picture of to sides cut at 90 degrees. Regards Alooha

You could try the follow me tool. [2 sides of a rectangular funnel]

[image] Alooha: But my main problem remains: in Sketchup the angle between the sides is 90 degrees (or 2 times 45 as in your construction), but in reality not, and I don’t understand why. This strikes me as a question about compound angle joinery, that is, where two sloping parts meet. Seen flat from above, the corner is 90 degrees and the bevel on each part is 45 degrees. But seen from the sloping faces, the angles are different. Do a search online about compound angles and you can find the raw math, tables of common angles, and constructive methods to create the angles without the math.

Ok, I’ll follow your council. I have taken 2 pictures: one on which the pieces cut at 90 degrees fit together, and then the bottom angle is less than 90 degrees one on which the bottom angle of the pieces is more or less 90 degrees and one notices a gap between the pieces tha goes from 0 at the bottom to x at the top. [90 degrees at the angle] [90 degrees between the pieces] .

Angle of 2 inclined corpses

SketchUp

Geo May 7, 2020, 4:13pm 13

See this recent post.

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Angle of 2 inclined corpses

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