Simple shape (in concept) - Y adapter

alex_wiebe

I'm starting to really like OnShape - have designed a number of boxes, basic pieces. Now I'm stumped again on a fairly simple idea to conceptualize: Y shaped hose adapter.

I made a hose adapter using the loft tool to change from one shape (square) to another (round) - but in this case I'm not changing shape, but rather diverging or splitting a extrusion.

I'm thinking I start by sketching the base tube, then create a couple offset planes on angles up top and sketch the same tube profile.

But now how to extrude up a distance, and then split into 2 extrusions that meet the lofted planes?

Or am I completely thinking wrong.

mahir

Try this.

1. Start by creating a simple extruded cylinder.
2. Offset a surface from the end of the cylinder and sketch another circular profile but offset to the side by a little more than half the diameter (symmetry line shouldn't tough the circle).
3. Loft from the end of the straight cylinder to your 2nd circular sketch. Make sure you're using the New option and that the start/end  condition is Normal to Profile.
4. Mirror the loft body using the Add option and make sure the merge scope includes both the straight tube and the lofted tube.
5. Shell the hole thing and select the three flat end faces for removal.

mahir

Try this.

1. Start by creating a simple extruded cylinder.
2. Offset a surface from the end of the cylinder and sketch another circular profile but offset to the side by a little more than half the diameter (symmetry line shouldn't tough the circle).
3. Loft from the end of the straight cylinder to your 2nd circular sketch. Make sure you're using the New option and that the start/end  condition is Normal to Profile.
4. Mirror the loft body using the Add option and make sure the merge scope includes both the straight tube and the lofted tube.
5. Shell the hole thing and select the three flat end faces for removal.

alex_wiebe

Ok - I get what you're explain in principle, but I'm missing something. If I try to loft a solid from the end of the cylinder to the circle on the sketch that is offset, it forms a bad-brown hour glass type shape, which disappears if I set both ends to "Normal to Profile". If I select Surface, it will loft, but then I can't mirror and the shape is partially hollowed out.

https://cad.onshape.com/documents/2be09e87958bc03983b7512b/w/8d417b0b7b149c74c83b9308/e/0b4cd91cbbdc0305cc532406

alex_wiebe

I banged something into existence - thanks!
I don't actually want the loft to curve, so I've left the ends to default.
But I do want the top ends to be perpendicular to the tubes and not parallel to the bottom. So on to the next learning curve!