| Electronics > Projects, Designs, and Technical Stuff |
| AutoCAD Question |
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| bostonman:
I think this is the area to post such a question regarding AutoCAD. Basically, I'm trying to draw a 2" x 4" (piece of wood) diagonally across a rectangle. The problem I have, I don't know the width (due to unknown angles) of point A and B due to unknown angles. My thought is to draw a 2 x 4, rotate it, and then pull the ends into place. The problem is that I can't keep the width as a 2 x 4 once I move one side. I can't use trig because, as the picture shows, one side of point A doesn't go to the other corner of point B. Does anyone know how I can fit a 2 x 4 in this picture? |
| IanJ:
Group rotate the two sides together but using one side as your marker. Use the trim or extend commands to get the ends in place. Or, Draw one side exactly where you want it then use the offset command to generate the other side at the correct width for the wood and then trim or extend it for length. Don't "pull" the length into place as you will have more chance of skewing things. Ian. |
| admiralk:
--- Quote from: IanJ on April 16, 2020, 04:09:12 am ---... Draw one side exactly where you want it then use the offset command to generate the other side at the correct width for the wood and then trim or extend it for length. Don't "pull" the length into place as you will have more chance of skewing things. Ian. --- End quote --- Also keep in mind the difference between the actual and nominal width of a 2X4. Some times it does not matter, but other times it can make a real difference. |
| bill_c:
Draw a circle with 1.5 radius and make a tangent line from that. (edit- first time trying to add image...) |
| bostonman:
--- Quote ---if angle is unknown, dimension is unknown, we have 2 unknowns in 1 equation... ie unsolvable --- End quote --- I agree and why the issue. When I built this, I held the 2 x 4 over the spot I wanted, traced underneath, and cut it. Now I'm trying to make a CAD drawing to show (roughly) the length I cut the 2 x 4. I say roughly because there are more cross pieces in the rectangle where the wood is either slightly warped due to drying (it's PT wood) or it's real life and nothing is perfect. I like the circle and radius idea... I'll try that later. Thanks |
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