Boolean Union Dissapear
 

ok im following the creating a person tutorial series thing and im on the 3rd video where you have used boolean to put the head and torso together and now you are putting the arm and torso together. but when i try to put the arm on the torso i go to mesh>boolean>union and when i do that it just dissapears... ihave looked at the other responses and none have worked. plz help i want to complete my first person..

Can you post a screenshot of your model in shaded mode with the arm selected.

thanks

Edit: Do a screenshot of all 4 views (front, back, side, top). You know, all four panes showing at once. Just zoom into the intersection in all four views so we can see it a little better. don't need to see the whole model in each view, just a close up of where the two pieces intersect. Just make sure that you have the arm selected (highlighted) or that you are in shaded mode with wireframe on.

heres the pic

http://img401.imageshack.us/img401/3...yaerrorgp8.jpg
Shot at 2007-06-28

Edit: Before you do the following, I recommend you save your file as a different name. That way, you can always go back.

Thanks freehand. The arm seems to be well inside the body. Your meshes also seem to look okay visually.
Try these quick tasks to see if they work.

1. Select one of your ams and then goto edit/ungroup. Then do the same for the other arm, and continue until you have done so to all pieces of geometry. This is to make sure that nothing is grouped which has caused union problems for me. (If you're familiar with hypergraph you can ungroup items quicker with it).

If that doesn't work

2. select arm and delete history (edit/delete by type/history). then do the same thing for the body.

If that doesn't work.

3. Try doing a cleanup on your geometry.

If that doesn't work then do it this way which I like to do since it gives you total control. Kurt also mentions this in the tutorial. Delete some faces from your body to make a hole for the arm to fit. Then align the arm to the body as if your going to sew them together. Select both the arm and the body and combine them (combine, not group). Now merge the vertices of your arm to the vertices of the body. It takes longer but it should work for sure.

wow! thank you sooo much for the help! the very last one worked. :beer:

You're welcome! I'm just passing on the knowledge. It's nice when the booleans work but as you just learned, they can be a real pain in the rear sometimes.

Boolians are a right pain, I never use then unless its right at the end of the project, to cut bits etc, and then I try to match up the geo.

I would reccomend not using them if possible, if you plan your model's geo so that it has a nice flow then theres no no need for them