Nosecone (page 2) | Onshape CAD Tutorial | Stage One Education

Build the nosecone bridge

in which we constrain our sketches

7. Start a sketch for the string bridge on your tube

Select the sketch tool
Click the bottom face of your tube to start sketching on that face

Right click and select View normal to sketch plane to line up your view

8. Start to draw the string bridge

Select the Use (Project/Convert) tool
Click on the inner circle

That line will bold, as it becomes part of your sketch

9. Draw the bridge

Select the Line tool

Click on the left side of the inner circle
Click on the right side of the inner circle
Right click and select escape line

Repeat to draw a second line below the first

10. Dimension the bridge

Select the dimension tool
Click the first line, then the second
Set the dimension to 0.1
Select the Equal tool
Click on each line to make their lengths' equal

11. Finish the sketch

Select the "Trim" tool
Select the part of the circle outside the lines

On the top
On the bottom

Click the green check to finish the sketch

12. Extrude the bridge

Select the extrude tool
Click on "Sketch 2"
Click on Add to add to your part instead of creating a new part
Set the Depth to 0.25 in
Click the "Opposite direction" button to make the bridge go inside your tube
Click the green check

13. Strengthen the bridge with fillets

Select the "fillet" tool
Set the radius to 0.05
Click the 4 edges of your bridge
Click the green check