Putting countersunk holes on a wrapped part around a cyclinder

terry_schumacher

I have a cylindrical piece that I want to add a lens (which will have an LED strip in the lens). I want to use countersunk screws to attach the lens to the cylinder body.
1. How do I create countersunk holes on the Lens (in grey)
2. How do I extend the holes into the body (in blue) who they will be tapped when I 3d print the body.

https://cad.onshape.com/documents/76a23c08609acee7752f555b/w/5cef716fd78c28d6e8aac42c/e/540056ab2b7cf18ebf1ccac5?renderMode=0&uiState=67e065e748d9c8025a87621d

Thanks in advance

Terry

glen_dewsbury

Here is sample of one of the ways to do this. Including the holes with the wrap causes some distortion(stretching).

https://cad.onshape.com/documents/fe0d45038bf2628fdfada069/w/a3913ceb0eaabf791fea09ed/e/84f54dc063de1db5910287b0

terry_schumacher

@glen_dewsbury

Thanks for the quick reply. I have a few questions before I admit it is solved, even thought It looks like it is.

I want to verify the steps and why so I'll know next time.

1. You altered the wrap so you selected the entire Lens Outer Edge Sketch, NOT including the wholes I had.
2. You create Sketch1 based on a MP you placed at the top middle edge of the Wrap 1 (Lens).
3. On this sketch (Sketch 1), you then created a construction line thru the center line of the part for each set of holes I had draw. (I'm not sure where you got the angles?)
4. You created the 5 holes (the 2 end holes and the three that were along the side) by creating an MP based on the construction lines from Sketch 1.
5. You then did a Move face to move the middle three holes to one of the sides. I've never used the Move Face command, I'll have to read u on that.
6. You then mirrored the three holes you moved in the previous step along the center line of the part based on a MP

I see I need to learn a lot more about MP's to be able to use them like this.

Thanks again for the quick reply.

glen_dewsbury

MP? MC (mate connector) They're worth studying since they can speed things up and eliminating planes in the feature tree. https://cad.onshape.com/help/Content/mateconnector_a.htm?Highlight=mate%20connecter'

That's not angles but arc lengths taken from your flat sketch.