Cut a steal beam

Support Basics & Interface
1

Hi, Im modelling architecture on Blender 2.56a beta. I want to cut a diagonal steal beam with a vertical plane. That should be very easy, but I cant work it out.
First I tried it with a knife tool (k), but I think it isnt implemented in 2.5, because I couldnt find it anywhere. Kkey doesnt work any more. Is that right?
Then I tried it with Ctrl-R, cutting edges, but there is no way to make diagonal cuts on the object. Right?
Then I tried it with boolean modifiers, but when applying them, I get a message that the modifier is disabled. Is there a way to enable it, or is it still erroneous?
Is there another way to get what I want?

Thanks and greetings

2

with your cylinder layed out horizontally, you can make a loop cut and shear it (space bar, search ‘shear’ or ctrl shift alt S)

but news&discussion is the wrong place to post this - please use the modelling support forum next time

3

in 2.49 there is a plane knife that you can use to cut any object in 2!

happy 2.5

4

Thanks for the answers. Next time I will choose the right section, sorry.
Ricky, as I could know the knife works different now. Select face and than hold down Kkey while cutting.
I have to try out shear.

5

no not knife

it’s a script which use a plane as a cutting tool!
have you seen it ?

happy 2.5

6

No, I havent seen it. Could you give me a link?
Greetings

7

Jeepster, I tried what you proposed. It worked, but the problem is that ‘shear’ also modifies the geometry of the beam, not only the cutting plane. So it doesnt exactly do what I need.

8

try this one in 2.49

happy 2.5

9

Ricky, I cant see the link.

Ok, I solved the problem using the boolean modifiers. I think they also work a bit different in 2.5, or I first just did it wrong. Saw this tutorial, which helped me to apply them correctly:

http://blendernerd.com/?p=274

Thanks for your help,
greetings

10

what do you mean you cannot see linK

you click on it and on top left download file

salutations

11

You could also use ctrl-r method and move the verts until the line is diagonal though. It’s a work around and could work but would become more difficult with the complexity of the object.