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Reducer Coupling exercise Slide 4 of 10
barry_galbraith
Member Posts: 12 ✭
"Sketch on the Front plane". Of which part? Existing sketch, or new sketch, or something else?
"Use the Use sketch command to convert the edge shown with label A to the line on the sketch shown with label B." How? I can't find any explanation in the course notes.
Best Answer
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robert_scott_jr_
Member Posts: 737 ✭✭✭
And then what? I can draw a vertical line, but it seems totally unrelated to the edge of the hole in the flange. Yes, anything else drawn is 'unrelated' to the element that was created with the Use tool until made related by constraints and/or dimensions. In other words, the newly created element is not 'fixed' any place on it's plane until given it's position by constraints and/or dimensions. Sketch elements need a fixed place. An element will be black in color when it is.
So the question remains. How do I USE the hole edge? By drawing from a point of the line previously created by the Use tool.
the new sketch has a separate origin in the middle of the front plane. How? A part studio has only one origin; it's a 3-dimensional anchor point.
When I draw the vertical construction line labelled B, I get a line. The instructions aren't 'draw a construction line' but to convert that solid vertical line to a construction line.
The slide shows Use constraint symbols on the line, not on the edge of the hole. I have the constraint on the edge, not the line. It may appear to be on the edge. Hover the cursor over the constraint symbol to reveal the owner of the constraint.
I found that having used "USE" to select the edge of the hole in the flange, that is the vertical line (labelled B) that you use to do the rest of the drawing in Slide 4. Yep, that's it.
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Answers
Sorry for your frustration, Barry. I think better wording would be 'Create a sketch on the front plane'. One way to do that is to right click on the front plane and select 'New sketch' from the dropdown menu.
Within a sketch, the Use tool is used for capturing (Use and Project are other terms sometimes used) other elements within the part studio. In this case it looks like the lesson wants to capture the I.D. of that flange so new sketch elements can Use that line to draw other lines from, resulting in elements of the new sketch being in a precise location relative to the flange.
- Scotty
I create a new Sketch on the front plane. The Flange created in the first sketch, and extruded in the first Extrude is visible, coloured blue. With a new Sketch created, click on the Use tool, then click on the edge of the hole in the middle of the flange. The Use constraint appears for the hole edge. And then what? I can draw a vertical line, but it seems totally unrelated to the edge of the hole in the flange.
I've drawn the flange in Sketch 1. I've extruded the flange in Extrude 1. The flange, coloured blue, is sitting there. I select the front plane and create a new Sketch. I click on the Use tool, and select the edge of the hole in the flange. The Use constraint icon appears for the hole edge. I draw a vertical line. It can be any length. It appears to be unrelated to the hole edge I'm Using. So the question remains. How do I USE the hole edge?
The already extruded part sits in the middle of the page, centred on Origin. When I create the new Sketch on the front plane, its origin is the same as the origin in the part. In Slide 4 the part is sitting upper left, with an origin in the centre, and the new sketch has a separate origin in the middle of the front plane. How?
The slide says
"convert the edge shown with label A to the line on the sketch shown with label B"
When I click on the Use tool, then click on the edge of the hole, the Use constraint symbol appears on the hole on the flange. When I draw the vertical construction line labelled B, I get a line. The slide shows Use constraint symbols on the line, not on the edge of the hole. I have the constraint on the edge, not the line.
How?
I found that having used "USE" to select the edge of the hole in the flange, that is the vertical line (labelled B) that you use to do the rest of the drawing in Slide 4.
And then what? I can draw a vertical line, but it seems totally unrelated to the edge of the hole in the flange. Yes, anything else drawn is 'unrelated' to the element that was created with the Use tool until made related by constraints and/or dimensions. In other words, the newly created element is not 'fixed' any place on it's plane until given it's position by constraints and/or dimensions. Sketch elements need a fixed place. An element will be black in color when it is.
So the question remains. How do I USE the hole edge? By drawing from a point of the line previously created by the Use tool.
the new sketch has a separate origin in the middle of the front plane. How? A part studio has only one origin; it's a 3-dimensional anchor point.
When I draw the vertical construction line labelled B, I get a line. The instructions aren't 'draw a construction line' but to convert that solid vertical line to a construction line.
The slide shows Use constraint symbols on the line, not on the edge of the hole. I have the constraint on the edge, not the line. It may appear to be on the edge. Hover the cursor over the constraint symbol to reveal the owner of the constraint.
I found that having used "USE" to select the edge of the hole in the flange, that is the vertical line (labelled B) that you use to do the rest of the drawing in Slide 4. Yep, that's it.