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Modeling Diving Knife Tutorial

Ivan — Thu, 05 Nov 2009 19:23:13 +0000

In this tutorial you will learn how to model this cool looking diving knife. The model can be set apart into two pieces, blade and handle. Both having some nice features.

INTRODUCTION

I really liked modeling this model, it turned out really good, and I must say that it was pretty easy to model it too. However, there is fairly enough playing with Osnap, but then again, when do we not use Osnap frequently? Anyway, to get you started, you first need to download some kind of blueprints I made for you out of this model. You just gotta love that Make2D command!!!

Blueprints reference

STEP 1

First things first, we need to setup our blueprints. Not only import them into Rhino, but also position and scale to fit the dimensions marked on them. First, go to Front viewport. You can expand it by double clicking it. Next, using PictureFrame command browse for blueprints you previously saved to your computer. Now, you don’t need to worry about how to position or how big you should make it. We will fix that in a bit, but just make sure your blueprints are not tilted. For that you can use Snap, or even better Ortho.

PictureFrame

Create a line with PolyLine command or just simple Line command will do it. From the blueprints you see one dimension 145.08. That is just a reference dimension, and you can use 145. So, make a Line 145 units long and using Ortho make it horizontal. Now, the line will probably be bigger than the blueprint in PictureFrame, but that doesn’t matter because we will now scale the blueprint to fit the line. First, using Move command move the blueprints PictureFrame. Select PictureFrame, and start Move command, by clicking on the image, on the tip of the blade you define first point to move from. Then click on the End of the line for the point to move to. Using OSnap End option is smart thing here. Actually, without it you can’t do it accurately.

Move from blade tip

Next thing we need to do to the blueprint is to scale it. Now, we have one line that is 145 units long, and we see on the blueprint the length of the blade. Using Scale command we will scale the PictureFrame by first clicking on the end of the line (or tip of the blade) and using Near OSnap option we will click on the line where the blade ends on the blueprint. Then, for the last click we will click on the opposite end of our 145units long line.

Scaled blueprints to fit the line length

Create another Line, and position it according to the blueprint vertical line that represents the far right end of the blade.

Another line

Now, move the horizontal line to the Mid point of vertical line. Use Mid option in OSnap.

pic

Modeling Kent hair brush

Ivan — Sat, 15 Mar 2008 01:18:51 +0000

Learn how easy is to model this simple hair brush. You won’t even need help in this tutorial.

I’ve searched the term of hair brush on the google, and found this great Kent web site with nice images of brushes, so I chose one, and started modeling. Want to know how? Well, follow the tutorial.

RESOURCES

STEP 1

First things first, we need to insert the reference image in the top viewport, as always. So using BackgroundBitmap command, insert the image (I made the background 67 units wide).

When you got the background in the right position, we now need a straight line in the middle of brush on the image. So, using polyline create the line. After that, we need to create left edge, you can do that using circle command. Then, using polyline command, create a line, and using Curve:Interpolate points (InterpCrv) create a curve as on the image below:

Using all those curves, trim off the parts you don’t need, and there where two trimmed circles are, fillet using fillet command by 2 points (if you made your background image 67 points wide).

From your front viewport, using Copy command, copy your newly created closed curve by 3 points on y axis upwards.

Next, using InterpCrv command, create (by clicking only twice – start and end point) a curve between those two closed curves. You might find very helpful using end or mid option in Osnap. (find where your curve’s end is, an alternative way is to use int option, and click on the intersection of your first polyline (for mirroring) and bottom closed curve, and then using Perp, go up to the upper closed curve perpendicular)

Using PointsOn command, show the control points of this curve, and if you used perpcrv as I said, not polyline or line, then you should get two control points inside your curve. Move those to the right (from Front viewport) by 1.2 units.

Next, using two closed curves, and this profile curve, create connecting surface. We’ll do that using Sweep2 command.

Ok, next, using PlanarSrf command, create top and bottom caps of your base model.

Modeling car rim

Ivan — Fri, 07 Mar 2008 01:20:55 +0000

Just another car rim tutorial, after which will follow tire thread tutorial and hopefully brake disc.

Yeah, yeah, I know. You must be thinking “Another rim tutorial”. Well, first of all, I’m pretty sure you will learn even one new command in this tutorial.

Resources

Video tutorial for modeling car rim.

STEP 1

Insert the first reference image into the background of your Right Viewport. I made it 50 grids wide. You can set the background image to be in color, and remove grid with grid command. Using polyline (or just line) command, make simple straight lines according to the background image.

Trim the parts that aren’t needed, and fillet the intersections with the radius of 2. And offset by 0.4 inside.

After you made a profile for the rim, insert second reference image and using scale background image and move background image commands, position it so it somehow fits your profile curve.

Using Curve: Interpolate points command, create another profile… like on the image below. You can create one polyline in the middle of the rim.

Trim off the parts of curves you don’t need, and on the inner side of your spoke, fillet the straight line and curve with 2.

NOTE: at this point, I have rotated my curves from front view by 90 degree and positioned so the far right end of curve is in origin (0,0)

Using Remove Knot command, remove selected knots. So you end up with uninterrupted curve, so when you try to explode it, it says this: “Cannot explode single curve segments.”