Never ending story on loft twist

michał_piotrowski

Hello

I'm struggling with lofting rounded rectangle to normal rectangle.

https://cad.onshape.com/documents/27767b802e3bc7ae6acc1bc2/w/2d6262b5c7882b6cf9abae18/e/1df4aa13a98d63f440d55edc

Is it even possible with single loft? Because it works as I want if I cut sketches to loft roundings separately.

https://cad.onshape.com/documents/27767b802e3bc7ae6acc1bc2/w/6442914049a95b840611099b/e/1df4aa13a98d63f440d55edc

Vertices matching does not help at all. Top rectangle has only 4 while bottom has 8 (and 4 more implicitly in centre of rounding)

Any suggestions? Especially if single loft is possible here.

MichaelPascoe

 
@michał_piotrowski
It took a few tries, but I got it. 

• Split the rounded corners in half in the top sketch.
• Split the bottom sketch so that is has the same number of vertices. Make sure they line up with the top sketch.

EvanReese

The workarounds required for lofting is very very high on my list of things I don't like about Onshape (and I love Onshape). I hope loft synchronization gets an overhaul soon.

lana

Do newly released loft controls improve your experience ?
https://cad.onshape.com/documents/aded175ca0e019629e583205/w/70c3945785322f571366bb8e/e/5631c8fed6f2aad707a8b6bf

EvanReese

haha, this is hilarious timing. Yes, this should help! Gotta play with it

MichaelPascoe

I tried that, but I couldn't figure out how to add more than one connection?

bruce_williams

@MichaelPascoe - the trick is close the Connection group and then choose location for next Connection. Then a new group is started and the focus (blue entry color) will be in this new group.  These kinds of entry boxes are always getting me; got to remember to switch to next group.

bruce_williams

Connections are very cool how they work.  I like being able to choose anywhere along a curve and move it live or choose a vertex.  A needed improvement will be to have Start & End condition work with Connections.  I think the Connection should just follow the conditions.

mike_hölscher

Since this part looks pretty symmetrical, you can also loft a quarter piece, and then pattern or mirror to create the complete piece. Maybe this makes the lofting a bit simpler.

MichaelPascoe

@bruce_williams
Thanks. That worked much better.

bruce_williams

@MichaelPascoe
perfect - the UI is not intuitive.  And for the OP your splitting the curve is necessary since the Connections do not play with End Conditions....yet.