Creating Multiple Lofts from Linear Pattern of Circle Sketches

sylvain_cornelus

Hello,

I'm creating a practice 3D print for tapered heat set inserts to determine the right size.  I'd like to create an array of lofts between various sized circles on a rectangular prism.

Here's my part: https://cad.onshape.com/documents/0fd63e74f8558ca407410cd8/w/150d7ed514b4c73afde5d7d4/e/c63e92e94cc05653e7b3026e

My two questions:
1) how can I create multiple lofts at once? (OnShape only seems to allow me to make one at a time and I can't pattern the feature after)
2) what is the best way to create an array of circles that increase in size by a certain amount at each location in the linear pattern or how can I ungroup them after patterning them to change each of their dimensions slightly 


Any advice is much appreciated!

NeilCooke

Here's how to do it with a linear increment:
 https://cad.onshape.com/documents/508c9bf00f382b583a6bfca8/w/6d09f3056925703ec4445b99/e/3ecfed97de8a6ecdeb1376a8

If you want more control, you would have to do each one manually.

NeilCooke

Here's how to do it with a linear increment:
 https://cad.onshape.com/documents/508c9bf00f382b583a6bfca8/w/6d09f3056925703ec4445b99/e/3ecfed97de8a6ecdeb1376a8

If you want more control, you would have to do each one manually.

NeilCooke

You can only make one loft at a time. Patterning should work fine. You can't ungroup a pattern. This may be easier to do using an extrude with draft rather than loft.

owen_sparks

@NeilCooke Can you do an incremented pattern of a "scale uniformly" feature?  I ask as in the part I've modeled the void for an insert as a solid body and then scaled it before removing it away from the target part by way of adjusting tolerance, but didn't think of the OP's idea of an incremented test piece.

NeilCooke

@owen_sparks not sure I follow you, but any feature that can be driven by a variable can be incremented in a pattern. If you need any help let me know.

chris_hutchinson315

NeilCooke said:

Here's how to do it with a linear increment:
 https://cad.onshape.com/documents/508c9bf00f382b583a6bfca8/w/6d09f3056925703ec4445b99/e/3ecfed97de8a6ecdeb1376a8

If you want more control, you would have to do each one manually.

I opened this, and I see that it is adding 0.005 in on each subsequent loft. I can't for the life of me figure out how or why. What is being done in this part to allow that, and does it extend to features outside of loft?

NeilCooke

See second video here: https://forum.onshape.com/discussion/2675/improvements-to-onshape-february-11th-2016/p1