Please advise how to proceed? Wavy surface

pavel_janeček953

Would anyone please advise me how to create a christmas tree in an attachment? I don't know what to do. I can handle the tree, but I can't handle the wavy lines. Thank you very much and I apologize for my English.

NeilCooke

Create a cone, sketch a wavy line, use the Wrap feature to split the cone face, offset the split face. That should get you close. 

pavel_janeček953

I'm sorry, but I don't understand much. Couldn't share the process? Thank you very much for your willingness

steve_shubin

@pavel_janeček953



konstantin_shiriazdanov did in another discussion

SEE BELOW FOR DOCUMENT

pavel_janeček953

steve_shubin said: @pavel_janeček953



I’m sure that if someone took a little time they could probably clean this up by eliminating maybe half of the features. But I got other things I have to take care of. Anyway the first six features, I got from something that @konstantin_shiriazdanov did in another discussion

https://cad.onshape.com/documents/d32b68298133f27e3365d328/w/40a6735ebd0a21d06e3d0e70/e/a161fc97447b5e9e7cd2c2b5



God, is it that complicated? I can never understand that. Thank you very much for your time.

steve_shubin

@pavel_janeček953

This is one way of doing it. The first thing that came to my mind

SEE BELOW FOR DOCUMENT

alnis

Here is a different approach that uses a feature pattern to iterate over each segment of the tree:
https://cad.onshape.com/documents/d392aa813b2558f537f0f59a/w/f8d2a6da98e444b4c7d358a3/e/c4e5f738073c9cf80bea0b34

steve_shubin

@pavel_janeček953

Somehow I missed the obvious. My mind does that every now and then. There was no need for me to do a cylinder. So I just split the cone

https://cad.onshape.com/documents/64f9300f4e09896d1db49916/w/fd614766d8e6a2ece8fe45c9/e/8ee15f0187d66c2f031b07c0

alnis

@steve_shubin that's a very elegant solution!

steve_shubin

@alnis_smidchens

Thanks @alnis_smidchens

But I’m guessing you probably have a better solution for moving the different shapes into place

I’ll have to take some time and look at what you did

When I saw how you scaled, I went back and changed my lazy way of doing it and ended up saving myself a couple more steps. It was just a matter of selecting the origin to scale around

I get lazy a lot of times and just go with whatever pops into my mind at the time

alnis

I used a feature pattern to loop over the sequence. It is probably overkill in this case, but it does give you some nice equations to play with to quickly adjust the look of the tree.

1. Increment an iteration variable by 1
2. Scale down a copy of the part (size is function of iteration number to decrease size for each instance)
3. Use a circular pattern to move the part and boolean it into place (distance is also a function of iteration number to space them closer)
4. Rinse and repeat

pavel_janeček953

Thank you all very much, I would also like to be able to work in onshape like this.