Press Pull on a step file works in 3 different ways?

[designingberlin]

I've been working on rather simple STEP imports with a bunch of holes I wanted to adjust with press pull.

I observed 3 different behaviours on round holes.

For example on a 10mm round hole the press pull by 1mm can mean

• offset the face, offset measured radially resultung in a 8mm hole (as expected)
• offset the face, offset measured in diameter resulting in a 9mm hole
• input taken as new diameter, resulting in a 1mm hole

I find that a bit nerve racking, esp. for fine adjustments where the wrong offset is not obvious.

Is there a way to enforce the first version with radial offset?

Thanks,

Stefan

[HughesTooling]

Have you enabled history after importing the model?

What I see is without history I always get the radius.

With history Offset face always shows zero so I can offset positive to make hole smaller.

With history if I use Press Pull I have the option to use Automatic, this gives the radius, this is the same as the Modify Existing Feature. Or you can use New Offset which is the same as Offset face, so 1mm will make the hole 2mm smaller.

Mark.

[HughesTooling]

Just noticed you get a different behaviour for cylinders vs holes. When modifying a cylinder I get the diameter but for holes you get radius!

Modifying an external face gives diameter.

Internal radius.

I seem to remember without history in direct mode there were some inconsistencies in how offset on cylindrical faces worked but with history it's more predictable.

Mark

[HughesTooling]

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@designingberlin wrote:

For example on a 10mm round hole the press pull by 1mm can mean

Is there a way to enforce the first version with radial offset?

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If you want to be able to just enter a distance so 1mm will give you 8mm from a 10mm hole, enable history and always use offset face not press pull.

Mark

[anthony.a.douglas]

There is so, so much stuff like that.  A lot of stuff that plain doesn't work, too, you are lucky you can do what you need to do, here.  There needs to be deep changes in the testing and patching proceedures during development, nothing less is going to help with the enormous mass of accumulating issues.  No more new features until things are spruced up would be advisable.  Sketching and so on needs to be a lot more reliable in a lot of ways.

[designingberlin]

Press Pull really seems like wild animal. But without automatic it behaves much more predictable - thanks for pointing that out.

I feel like the Automatic option in the Press Pull tool is valid to keep the timeline clean and to modify the underlaying feature if needed, but it should get it's own dedicated 'modify feature' tool that only does that.

I often use press pull to set clearances and I explicitly want to have a section of those clearance modification features at the end of the timeline.

Thanks,

Stefan