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Do I have to draw each component individually to achieve what I want?
phil_wilson475
Member Posts: 2 ✭
I am trying to create a pattern to make silicone glands to use with flat cable. I have extruded the sheet to 12mm and used the pattern/grid function to replicate what needs to be cut out to form the pattern for the gland. The outer ring is to be at a depth of 9.2mm, the next inner circle is to be at a depth of 8.2mm with the centre part (consisting of 2 small circles and one rectangle) left to original thickness. The problem is that when I extrude the outer ring all of the other parts of the grid disappear and when I extrude the second part everything disappears leaving me back at the beginning with a 12mmm thick sheet. is it possible to do what I want using the grid or do I need to create each silicone pattern individually. The image below shows how one section of the pattern should look.
I have added the link to my project as a tag. If this is not how it is done, please advise.
Answers
Don't use a sketch pattern for this.
Do the different extrudes to get the the geometry you need for one instance, then use the pattern feature (i.e. not within the sketch) to replicate that (using either the feature pattern or face pattern)
Eric is right, its better to do this as a pattern of the shape in 3d, rather than a pattern of the 2D sketch.
However, to do it the way you started, I think what is happening is the sketch gets automatically hidden the first time you use it for an extrude. You must unhide it for future extrudes. I think that is what you are experiencing when you said "the other parts of the grid disappear".
Doing it this way is a pain because you have to pick each individual circle for the 9 mm and then the 8mm cut. But, it works fine in the end if you don't mind the extra clicking.
Link:
https://cad.onshape.com/documents/3d12b80c1bc70542643a06b2/v/5a0c13556cafac228c8093cc/e/38d87eb28e51cd8583d9dbe3
This is what the preferred part pattern method would look like. You extrude the two cuts as a new part, instead of a cut. Then pattern that part as a remove material. Much easier to model. Much easier to change if the gland shape changes shape. Much easer to change the number/spacing of the pattern.
Link:
https://cad.onshape.com/documents/3d12b80c1bc70542643a06b2/v/4a96e82b769f879c1e7df79b/e/7aa1ecbd762d16734160797a