I'll make a short video to show some of my process and be clear.. There may be a couple areas to comment on with regard to my method.

Hi Burr,

> I'll make a short video to show some of my process and be
> clear.. There may be a couple areas to comment on with regard
> to my method.

Do you mean you're worried about your current process for rotating and positioning the blocks after the boolean is done?

Object snaps on to the corners of the box using the Move command should be highly accurate for the positioning part, and it should be fine to just use the rotation edit handle to flip the one piece by 180 degrees in the Front view.

- Michael

Hi Michael,

""""""""""Do you mean you're worried about your current process for rotating and positioning the blocks after the boolean is done?"""""

I've always used those methods and had great results.

It was just this particular job where I started to go back and forth and had some confusion.. I dont want to go to much into my CAM package and its methods because that is not the purpose of this forum.. Let's just say that if I was in front view and drew a curve with pick points "above Z zero" though the resulting curve is well below Z zero, the CAm package will read the top most "control point" as the height in Z... But you can rebuild it to show it's true Z value.. This is the same for surfaces and bounds data. The edges of the surfaces will show at the proper height, though the entire surface will show a bit more.. It's usually .002 in all directions, but with this model, IGES wouldnt produce proper results, but SAT did.. (A translation issue)

This video can show what we were discussing before, that you straightend out with the edit properties dialogue, but I wanted to show my use of the boundingbox command for placing an object, and what I saw here, just to get clear for myself.



I am always sure of MoI's accuracy. I was just thrown a little here...

Thanks for looking at the file Michael...

Just got back from my brothers where he finished the mould.








Shapeways demo part seen in it:







The Rapanui man made this so easy!!!!!!!

What are these little pieces ? (if it's not a secret)
Arraw darts metal end for this ?

Looks like it turned out great Burr, thanks for posting the machined part, it's always cool to see that!

- Michael

Hi Frenchy,
"""""""What are these little pieces ? (if it's not a secret)""""""""""

That is a mold for inserts for fishing lures... Lead will be poured into them, then the piece will be encased in a larger resin object with a skirt attached... Their will be a brass tube placed in the mold before pouring..... :o

This sort of thing? (of course more elaborated :)

Great !
i rememeber you posted lure rendering in the gallery
Is it aluminium the mould you are machining ?(i don't see liquid refrigeration for the tools )

Hi Frenchy,
Yes. It will look more like these when done





A guy will paint them up, then they are cast in resins or epoxies.. You would be great at it.. The fishy's like colorful, apparently!!!! :o

""""""i rememeber you posted lure rendering in the gallery
Is it aluminium the mould you are machining ?(i don't see liquid refrigeration for the tools ) """"""""

Thanks M....Yeah, thats it... The mold is aluminum. There is an air-mist coolant system (see the nozzle in the pics). You probably dont see any residuals because he blasts air to clean it just before a picture....

Seems a domain very colorful and diversified!

Nice one Frenchy...

I suppose it is the result of Man imagining what a fish would enjoy!!! lol

Hi Michael,
I was wondering if you caught the part about the bounding box use in the video.. Sorry, I kindof packed a bunch of stuff in there..

If you could refer to this video in this post here:

http://moi3d.com/forum/index.php?webtag=MOI&msg=4510.10

and just jump straight to 3 minutes in, and look at the bounding box result with regards to this model I sent...

Thanks..

Hi Burr yeah sorry I didn't get a chance to go all the way through your video, I wasn't really sure if I was supposed to be looking for something in particular in it.

So yeah what you show there at the 3 minutes mark does not look like just a display glitch, that certainly does look like something isn't right there.

Could you kind of give me a shortcut overview of what seems to be wrong there, is that from using the BoundingBox command on the boolean cut pieces?

- Michael

Yes it is the BoundingBox command.. Run on the 4 diffing objects. It seems to leave a bit of all their edges out of the box..

I have tried to re-create it with spheres and such of different sizes though I always (as before) get a good bounding box definition..

Hi Burr, yeah that looks like some kind of bug in the bounding box calculation - I'll investigate it.

Thanks,
- Michael

Ok... So some steps may be "model basic shape at actual size, scale up to make trims and blends. Possibly throw in a shrinkTrimmedSrf as well (or possibly A Seprate-ShrinkTrimmedSrf-Join)....

If much after that, it may be just an anomoly with multiple iterations of this particular model, as I havnt seen this before and I use that command all the time. Just wanted to be sure that this wasnt the expected result at this time... Thanks.

>Nice one Frenchy...

I suppose it is the result of Man imagining what a fish would enjoy!!! lol



Interesting Burr,

I got a job enticement recently from a university psych dept. outfit that's into doing just that... :-/

Among that: cats, dogs, people, etc... what do they do, I imagine - apply shock treatment if they chose an ugly lure?

Hi Burr, actually I think it's a bug in the bounding box calculation when dealing with that particular kind of shape that has a kind of outward flaring form on one side. I think the mechanism that MoI is using does not work properly with that particular kind of shape, but I need to analyze it a little bit more in depth.

- Michael