Bisect & Knife Tool

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So, notice, if I click on one of these layers and hide it, then these pieces, you know, are actually solid pieces. So that's what we're going to be creating. And we're going to be doing it with the bisect tool. So really cool tool, and let's make a new session. General. And we can save it as slicing.

And we don't need our cube. So let's just hit X and delete that. And let's go to File Import sto, and you want to find your original STL that we did for the very first lesson. Mine is right here, and then we'll do import STL. And notice it's really huge because we scaled it for 3d for 3d printing. So we're gonna hit period on the numpad and we don't need our camera and we don't need a light so just shift click on those and right click to delete.

So now we just have our 3d Suzanne file here. Let's double click that and call it Suzanne. So just rename it Suzanne And now we're going to slice it up, we're going to use the bisect tool. So to use that go to your side view, go into edit mode, and you want to make sure everything is selected. So if you don't if you only have a few things selected, or you don't have anything selected at all, hit a and that will highlight everything and go down your tools. And you'll see the knife tool, it looks like a box with a little knife cut in it, but if you hold that box down, there's another tool called bisect and that's the one you want to find it looks like somebody has chopped a box and half the hole, click on that.

And we're just going to cut Suzanne here in half, we'll just click and drag anywhere and then let go. And notice we have a little kind of bisect properties here. So you can move it up and down with this arrow. But what I want you to do is fill it so make sure you click on fill. And you can you know what it kind of does is if you turn and look they will fill that section in Or you could also do the other half, you know, if you wanted to just flip flop it. So that's one way you could break off a piece of that kick at bar.

But all I want you to do today is this type is just is just make sure please, please, please, that you put the fill checkbox on, that'll make it easier when we go to kind of reconstruct these pieces. So let's click out of that. And notice we've got a little slice there. So that is perfect. And now let's go ahead and just keep slicing, let's go to the side view. And let's, we still have our bisect tool.

So let's select all and then let's just slice one through the bottom here, maybe somewhere like that, and I'm not really happy with it, I want to get some of the bottom, you know, so it has something to kind of 3d print on the bed and then kind of meet this one together. So I'm gonna just slide that, just give it a little bit. I don't want to go into the ear. So just right there before the ear starts, maybe right before and then we'll take the And I'm trying not to hit any of these little verticity points as well. And so now we've got another slice, let me just do select, you can see our slice going straight to there. So there's another piece, and maybe let's do one down the center.

But notice, the way that this file was actually designed by blender, they probably used a mirror modifier. So there's actually a straight perfect line going down the center except for the bottom here, but we need a straight line there. So we could use the knife tool. And just go Hold that there go to the knife, and let's turn our magnet on and we'll turn the kind of what it's magnetized to to the vertex. So now we should be able to use a knife tool to essentially cut a little straight line right here. So just click on the first one, and then go down here and it kind of magnetizes to it.

You should feel like gonna snap to the bottom edge there, and just hit enter. Notice we have cut a perfectly straight line down those lines. And so that's pretty easy way to cut this in half. And let's start chopping it up. So now we've got all of our slices, we've got four, four pieces on this side and four pieces on this side. So we'll have eight different sections that we could chop off and, you know, 3d print individually.

So let's do a top and bottom split. So let's go to front mode, turn on your transparency goggles here. And we're just going to make sure you have the select box tool, and we're just going to grab the top part of Suzanne here and notice that I kind of got a little too much that got a little messy down here. So if I hit w on my keyboard, it will toggle through all the different selection types and just do the one that has a little circle. And if you hold Ctrl you can kind of unpainted, some of the ones that you actually like got selected. And sometimes I get way too many kind of strays here, and you just want it to be a straight line.

So notice this one shouldn't be there. If we keep going over this one Ctrl and just click and drag kind of just unpainted. That's the way I think of it. So that looks good. Let's check the other side. I'm sure I did some more.

Yep. so on. So Ctrl click and Ctrl Click on those little dots in the center those spaces. And I think we got it. Let's check in here. This looks a little messy.

And this is some tedious work, but sometimes it has some really cool results being able to just kind of cut parts into big chunks. So now we've got the top and let's pop it off. So we'll pop it off by selection. And we'll call this top and we can rename the other Suzanne bottom If we go turn our CTO goggles back off, and go to Object Mode, now we have a really cool top and bottom to our designs. Hey, so this one has some interesting stuff going on. We've got a plane in the middle here, but that's going to help us when we go to kind of seal these up and make them manifold and watertight.

So let's go ahead and split these in half. Now that we've got them split. We can let's do the top and go to side view and edit mode. And now what we want to do is maybe grab the, the front part, this AI part here, so we're going to hit w a few times go into box select, just click and drag a box and just kind of hyper extend it. But do notice we didn't turn on our see through goggles. So we didn't get everything.

So that could have been bad. Let's turn on our C through D select with Ctrl A with alt a and click and drag. And we just want just right past where this slanted line is. And then we can hit W. And just control and paint those off. So there we go. And this last one here.

That looks good. So let's pop it off. We'll pop it off by selection. And that's going to be the top. So if we go back into object mode, turn our, our C three vision off. Now, we have, we have our top eyes right here, and we also have a little part of our skull.

So let's just rename that skull. We've got our we can just call this is actually keep it really simple. And while we have the skull here, let's go into the skull. go into edit mode. And notice that it's kind of just open here. So we need to close it out up.

So we can go to hit just hit w a few times, get your selection tool, and we'll go to edge mode with two. And just double click on the outer edge here. And that should highlight everything, just hit F, and we filled it in. Very cool. So that one's fixed, we can turn it off. Let's go to our eyes.

Check the back of that that one looks good. It's already built in from our bisect tool. And let's go to the bottom now. To go to Object Mode, let's check bottom. And let's check these out. We can turn these off.

So this one needs quite a little bit of work to close it all up. So let's take our bottom go into side view and do see through vision And there is our line right here. Let's just grab the chin first. So I'm going to click and drag over the chin. And then hit W to paint out these while holding CTRL. And that's it.

Oh, look, we still got this little bitty guy. You want to look for things like that. And now I kind of took some away. So if you hold Shift, it will bring those back as long as you get all the correct edges. And this works in point mode, edit mode or face mode. So you'll find which way you like the best.

And then we have our chin, so let's pop it off with P and we'll do selection. And let's call that popped off part. Chin. So let's go back to object mode. And this bottom part here, if we turn our X ray vision off, this bottom part is actually we can call our ears so let's just call it ears. And let's take that into edit mode and seal it on up.

So let's hit w To go to our selection tool, double click on that F to fill it. And then we can double click on this section here and hit F. And now we've got it all filled in. Let's check our chin. Make sure Oh, yep, so he needs a little bit of work. We select the chin, go into edit mode, double click around there. Now we've got all of these parts completely remastered.

So good job. If you made it this far, this is pretty tricky, but very helpful. And you can get really creative with these. So let's go to shading and kind of give me some textures. Let's zoom out a little bit. Go to object mode.

And if you click on one of these sections, you can do a new material. Just do it any color you want. Just to see your work, you know, see your progress. Do this one do a new one, we can see green and maybe we grab the back of the head Maybe the IRS. I can do blue and white that looks cool. So you could you could 3d print something like that.

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