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How do I add a point to a drawing?

chrisjh777chrisjh777 Member Posts: 179 ✭✭✭
I am trying to add a point to a drawing to indicate a Datum for CNC milling (Similar to a virtual sharp). I can add lines, centrelines, circle centrelines, but not an individual point.

What I am trying to do is indicate accurately on the drawing the precise location of the XY Datum (as crudely shown in my drawing below).  What I have done in SW is to extend lines (horizontal and vertical) until they intersect, than trim (if necessary) the lines back to a pseudo virtual sharp.

 

Document link here: https://cad.onshape.com/documents/d0068ecf012879ac6c71c310/w/3a6118e9c448d24e9cb089ba/e/8097d798b3671eb306cc1d7a

Comments

  • NeilCookeNeilCooke Moderator, Onshape Employees Posts: 2,045
    You can now show sketches in drawing views - right click your view and select show/hide sketches (you need a sketch with a point in your part studio obviously).
    Neil Cooke, Director of Technical Marketing, Onshape Inc.
  • chrisjh777chrisjh777 Member Posts: 179 ✭✭✭
    Thanks Neil,  Understood.  I created an XY Datum Point Sketch in the part studio. 

    However when I try to insert the XY Datum Sketch into my drawing, I get a message "Failed to resolve sketch".


  • NeilCookeNeilCooke Moderator, Onshape Employees Posts: 2,045
    edited July 2018
    @chrisjh777 that sounds like a bug. You can sketch a small circle or crosshairs and it will work.

    EDIT: points are not supported in drawing views because everything in a drawing must have a defined scale (a point is "infinitely small" so there is no way to determine how big the point should be displayed). Use a small circle.
    Neil Cooke, Director of Technical Marketing, Onshape Inc.
  • chrisjh777chrisjh777 Member Posts: 179 ✭✭✭
    @NeilCooke ; Thanks. Now makes sense.  I changed the XY Datum Sketch to include a small (0.5mm) circle concentric with my point.

    I now have an accurately defined "Point" :) 


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