I don't use any fillet before apply offset with your example file 3dm
But something curious : is it normal that over 3 cm nothing works in my example above?
your example was in mm, I change it in cm or without unit system

If I take 3 faces of a normal cube I can offset any measure!

it makes seance, thanks you gentlemen

Hi Pilou,

> I don't use any fillet before apply offset with your
> example file 3dm

In the example file that I downloaded from the above (test_34.3dm), there was already a fillet applied. Did you get a different file?


> But something curious : is it normal that over 3 cm nothing
> works in my example above?

It looks like your example is just an image with no .3dm model file? Could you please post the model file so I can take a look?

- Michael

It's the model of Yanada that I have loaded! Only change unities! mm --> cm
After 3cm ??? Offset seems not works!

I did post one only file...test_34.3dm
Perhaps Pilou did build his own. ( Pilou Pilou I did click the same button 10 times ) "LOL"

Yes I had loaded only your test_34.3dm !

Here is another one. Indeed not able to offset

Hi Pilou,

> After 3cm ??? Offset seems not works!

Yeah, it looks related to the same problem, it is having a problem with the corner patch.

If you delete the small rounded corner patch, you can then go above 3cm.

That is interesting that it works when you scale the object down by 10 times though.

Same advice as before though - it works better to apply the offset to the plain box, and then apply fillets to everything after offsetting has been done, rather than filleting before.

- Michael

Hi yannada,

> Here is another one. Indeed not able to offset

Does it have a high degree? Singularities? Large or small size in units?

Those are some of the things to look for that the offsetter does not like.

But it's hard for me to tell any of these things just looking at a screenshot, can you please post the model file?

- Michael

That is a famous bug of the library!
Does the guys are reactive?

send at moi@moi3d.com

There was a similar chair offset case here.
http://moi3d.com/forum/messages.php?webtag=MOI&msg=1773.1

---------

Hi Danny, yeah that one though did come to a singularity/pole point, and stuff that had a pole was pretty much broken for offsetting in v1. That particular area did get improved quite a bit with one of the geometry library updates in v2 though, although it looks like that one still doesn't work.

The offsetter also seems to be pretty finicky about doing things that go through several inflection points like these shapes have.

- Michael

Hi yannada, that looks like a different kind of offset bug than the high degree one.

Your object is somewhat large in unit size, if you shrink it down to 1/100 of its current size then some offsets will start to work although not all:



Also it will start to fold in on itself if you go very far away:



I'll see if I can take a look at where this one is failing, maybe there is a possibility for me to tune it up.

- Michael

hmmm I should make a miniature one. "LOL"
Thanks Michael, it will be much appreciated if you could work it out. I'm stacked with few concepts here.

Also note in my case all is needed is 3-7 mm offset (injection molding)

Just to be clear, when he says scale it down, it's only to perform the operation, then you can scale it back up again! Correct?

?

Hi Burr, yup that's right.

Yannada - that's how you can get your 3 to 7mm offset working currently.

Select your chair, then run Transform/Scale, type 0 <enter> 0.01 <enter> to scale it around the origin to 1/100 of its current size.

Now you can use surface offset in the range that you want, which are now values of 0.03 to 0.07 . I tried several values in this range, like 0.03, 0.04, 0.05, 0.06, and 0.07 and they all work. (above 0.08 or so seems to start to be problematic).

When you are done, you can select the chair and its offset and scale back up if you want.

That will produce the result you are looking for right now.

It may not be too hard for me to adjust the tolerance to be a relative tolerance which may improve things to work better at your original scale, but you can get this done with the above procedure right now.

- Michael

Cool...