INTRODUCTION

Ok, this tutorial is pretty simple modeling wise, and probably doesn’t bring you anything newer than the previous tutorials, but none the less it is a good practice. Again, in this tutorial we’re not designing but rather just sharpening our modeling skills in Rhino. And by wide range of different models to model through these tutorials, you just simply learn to model. So, lets begin with this one.

This is the model you will create:

Final

STEP 1

We will start out from Top viewport with couple of Circles. It is always good practice to start modeling your model from origin. Usually things are symmetric and this way you are able to control your model even more, not to mention model one half if the other is the same.

Go ahead, and create two Circles with Circle command using 12 units and 8.75 as radii.

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Then you need to move the smaller Circle up on the Z axis by 4 units. Do it either from Front or Right viewport.

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Now, you need to Copy that Circle and move it up by 44.5 units.

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Using ExtrudeCrv command, and with Cap option set to YES, you should extrude bottom (bigger) circle up by 4 units. To do that without measuring and typing in the command prompt the values, you could easily just use Object Snap (OSnap) with Near option turned on.

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Do the same for the smaller circle. Using the bottom one extrude it, all the way up to the upper one.

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Now, with Point command, create a point from Front viewport with x,y as -18,31 (x=-18, y=31).

From that Point, working in Right viewport create another Circle with radius of 8.45. If you turn on the OSnap “Point” option you will snap with center on the point.

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Using that Circle, we will create another extrusion. Using ExtrudeCrv command again we will extrude that Circle by 18 units. Just to the y axis.

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Using BooleanUnion command, join the three surfaces to form one. Then with FilletEdge command, you will create filleted edge.

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Ok, before you go and create a FilletEdge with default 1 unit as radius, you just need to start the command and select the edge like on the image above. Now, click on the AddHandle option to add handles. We are not going to have the same radius. We are going to have 4 handles, where we already have one. So using Quad OSnap option (it would be good to turn off the others) we will add 3 more handles on quad sections. Then, clicking on the handles dots you can input the radius for each one. So, for the upper and lower we will set 0.5, and left and right 2 units.

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Again, using FilletEdge fillet the edges like on the image below (use 0.2 as radius):

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Now we will create two more circles. You can use the existing one to Copy it and make two more instances 0.8 units and 10.3 units left of the original circle looking from the top viewport.

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Using the same original circle like on the image above, we will Offset it by 2 units inwards.

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We will extrude that offset circle by -3.8 (the minus sign means it will extrude to the left, rather than the default right – towards positive).

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Using BooleanUnion join that cylinder with the rest of the tap body. Now, using FilletEdge and 0.2 as fillet radius fillet the edges like on the image below:

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Using the two single circles we created earlier, make a solid with ExtrudeCrv command:

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Now, isolate the cylinder you just created and the circles on the edges of that cylinder. You can use Hide and UnHide commands, or just use Layers and put them in different layers. Either way you need to isolate your objects you’re working on.

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Using Offset command again, we will offset the Circle which is near the tap body. The right one looking from Front viewport. The offset distance will be 1.2 units towards inside.

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Using Split command we will split the cylinder object with inner circle. Then the surface which is left inside the circle needs to be moved by 2 units left looking from Front viewport.

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Now, using Loft command we will fill in the gap between the surfaces.

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Join all surfaces and using FilletEdge with 0.2 as radius fillet these edges:

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When you unhide everything, you should have something like this:

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Now, we will edit a little this cylinder we worked on. Using MoveFace we will move left face of it like on the image below. The distance is not very important:

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If you done all the measurements like I stated, then you should make a Point next. From any viewport this time, because we will define all three axis values. So, go make a Point with -26.35,0,74 (x,y,z).

After you’ve done the point, copy it using Copy command and move it down by 31.5 units:

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Next we need another Circle. This time with a radius of 1.7 units, and a center in the lower point. You can easily do that by starting the Circle command then snapping to the point (use OSnap Point option) and clicking to set the center of the circle, then move to Top viewport (make it active) and input 1.7 units as radius.

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Do the same for the upper Point, but create a circle there with radius of 2 units.

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Resources

Blueprints (required registration, but I think it is worth!)

STEP 1

Again, in this tutorial I have also skipped the blueprints setup.

First, create 3 outline curves in Front viewport with InterpCrv and bridge two upper with one line using polyline (good to have osnap Near option turned on)

Next, split those two bridged curves with that created line (bridge).

Create using InterpCrv outline for the handle section, and offset by 1 inside.

Trim the two curves and split outline curves.

Then, from right viewport, create three lines, and Fillet the corners with 1 unit. Offset that curve by 1 unit inside, and you will create another instance of this curve, but this one won’t have filleted corners.

Extrude those two curves and trim two newly created surfaces with the curves in Front viewport.

The two curves for handle section need to be positioned on the center of your base surfaces. I’ve done that by first creating the surface with Surface from 3 or 4 Corner Points command (SrfPt) and I positioned that surface on the middle of my model. I’ll use that surface for future centerings (I hide it when not needed).

When you moved those two curves to the center, extrude them according to image below:

Here, I’ve used BothSides option in Extrude command. Notice the Top viewport to see the extrusion distance.

Blend the edges of coresponding surfaces, check image below for reference…

Connect blend curves with lines on the mid

Using Network Surface command create surface out of two blend curves and one line.

Do this step for 3 other parts, and join the surfaces. Next, we need to blend the inner and outer surface… I used 0.5 for both sides blend bulge.

In the picture above you can see that I didn’t use blend for connecting the two network surfaces, instead I used Sweep2. Do that 3 more times for other surfaces.

And for the little 3 curved surface corners I used Sweep1: