Boolean Union problem

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 From:  MFort
426.1 
Hello Michael
First thank you for a top of the line program and allowing me to participate in the beta. I'm just a recreational user, sort of gave up plastic modeling for the 3D world. Your program is very intuitive for the newb and I'm having a blast with it. You definitely have a customer here.
I'm having a weird problem though. In the attached model I'm doodling out an Armored Personnel Carrier. Inside where the tread will be I have eight road wheels. Two very large and six smaller. Inside the smaller wheels are cylinders I am attempting to Boolean union to the wheel structure. For whatever reason the cylinder will not union with the wheel structure. The tool finishes like it has done the union, but moving the wheel reveals they are not attached. I have already performed a Boolean subtraction to get the indent, does that make a difference? I'm attaching my save file.

Thanks Again Michael

and Thanks Frenchy Pilou without whom I wouldn't have found this gem of a program

Matt
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 From:  Frenchy Pilou (PILOU)
426.2 In reply to 426.1 

hehe That' s normal!
Your cylinder seems has no common volume or surface with the "Wheel" !
So just scale 1D your cylinder (or extrude); Boolean Union and all will rule as a charm :)

ps When you send a 3Dm file : unhide all the objects ;)

---
Pilou
Is beautiful that please without concept!
My Gallery

EDITED: 21 Feb 2007 by PILOU

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 From:  MFort
426.3 
Thanks Pilou

I understand now, thank you for your assistance. I will unhide all in the future.
There will probably be many more to come. :)


Thanks
Matt
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 From:  Michael Gibson
426.4 In reply to 426.1 
Hi Matt, thanks, I'm glad you like MoI!

The reason for the union failure is that the cylinders inside the wheels are floating just a little bit in front of the back plane of the main wheel part, they aren't touching - here is a zoomed-in view from the top of one of those wheels:



You can see the dashed lines for the edge of the cylinder and the back plane, there is a bit of space in between them, the cylinder is floating in front of the back face a bit.

To make the union work, these objects must be touching each other - and it is usually not a bad idea to make them actually stick through each other a bit instead of only exactly touch, but they must at least be touching.

It also looks like there is a bit of a slant to the cylinder piece's face - maybe this was done as an extrusion of a very slightly off-axis circle? It might be a good idea to draw a new cylinder in there to get a really regular end on it.

It looks like you're having some fun creating stuff!

- Michael
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 From:  MFort
426.5 In reply to 426.4 
Thank you so much Michael. After Frenchy pointed that out I went back and did exactly that. As I figured, operator error.
I might as well apologize, in advance, for the slew of stupid questions to come, As I am completely hooked.

Thanks Michael

Matt
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 From:  Michael Gibson
426.6 In reply to 426.5 
Well, no doubt you would have figured it out if MoI provided some information like "Objects do not touch", or something along those lines.

But I haven't quite figured out where to put such error feedback yet, and in some cases it is a bit difficult to determine the reason why something didn't work... So it might be a while before that can happen.

- Michael
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 From:  MFort
426.7 In reply to 426.6 
How about just a generic place holder type of message such as,"Action was not completed." Just something saying it didn't work would be great, maybe a pop-up where the tool info is input? Or maybe the cursor changing to the "No Go" circle with a slash through it upon execution.
Your doing great stuff bro, like I said before, you've got me sold.


-Matt
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 From:  Kreten
426.8 
Good idea, but pčeeeeease with someother sound....anything then microsofts default error soound....that booooooom
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