Can't wrap my mind around 3d modeling

(Jason ) #1

Can anyone help me out with the 3d feature of CC pro. I have a simple SVG of linked hearts that I want to be raised out of a sign I am making for a friend. But I can’t seem to figure out the settings.

Anyone point me in the right direction?

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(Luc) #2

Well that is not really a 3D. This can be made by cutting a contour on a flat piece of material of the thickness you want. It will effectivelyt cut all the way around the shape. Winston Moy just produced a video on YouTube on how to cut letters using a similar technique on the Shapeoko using Carbide Create.

A 2.5 - 3D would have an uneven thickness for example the face of a dog sculpted in a piece of material and a full 3D would have uneven thickness like the dog head. This can be accomplished with 4/5 axis machines or for simpler pieces on a 3 axis machine like the Shapeoko where you machine from at least two sides.

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(Arjan van de Ven) #3

if you just want the hearts to stick up that’s more 2 1/2 D.

what I’d do for that is the following, assume you make 2 toolpaths, basically 2 layers.
I assume the 2 hearts are separate shapes in CC and you want the large one to be on top (adjust below if not)

step 0: add a square that is the size of your stock and covers the whole stock
step 1: duplicate the large heart with ctrl-C
step 2: put the copy back over the original
step 3: shift of ctrl click one of the large hears with the small heart so that both are selected
step 4: use the “union” boolean operation
step 5: make sure to immediately “group” the result of the boolean operation or it’s a pain later with all the separate pieces

now to tool paths
1st layer:
step 6: select the square and the non-unioned big heart (easiest to select all of it, and then unselect the small heart group)
step 7: make a toolpath for a pocket, say to a 0.1" depth of cut
2nd layer:
step 8: select the square and the unioned big/small heart
step 9: make a toolpath for a pocket, set start depth to 0.1" and depth of cut to 0.2"

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(William Adams (Carbide 3D)) #4

I worked up a basic tutorial on this sort of thing at:

This would be similar, and a good chance to show the pen tool in CC400 ---- hang on and we’ll do a quick tutorial.

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(Jason ) #5

I guess my question was more of "can I make this 3d’ish. I was wondering if rather than just straight cutting a pocket around them could i make the side ramp up to give it more dimension.

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(William Adams (Carbide 3D)) #6

Start by setting the stock size to something reasonable:

Edit the Document Background to import the heart image:

Then switch to the Design tab, and select the Curve tool and begin drawing.

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(William Adams (Carbide 3D)) #7

Start with “Snap to grid” turned on so that you can be sure of starting/stopping on the same point and closing the path properly:

Turn “Snap to grid” off and then go into curve edit mode and adjust the curves as needed — note that you will need to toggle off smooth even on some points you would expect to be smooth so as to have asymmetric length off-curve nodes:

duplicate and move/rotate/scale to make a second:

Then offset paths inside and outside as desired:

Presumably one wants the hearts interlinked, so there should be an appearance of say over the larger heart by the small one at the top and under the large heart at the bottom — this will require a bit of Boolean logic.

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(William Adams (Carbide 3D)) #8

To go over with the small heart at its top we will need to cut off the larger heart with the path of the smaller one.

Start by duplicating the inside and outside of the small heart:

and drag them back into alignment with the originals and draw in a circle which defines the intersection which we wish to work with:

Select the circle and the outermost heart and do Boolean intersection:

resulting in:

and shift click on the inner heart so that the latter has a dashed appearance and do "Boolean subtraction:

resulting in:

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(William Adams (Carbide 3D)) #9

The Boolean subtract the intersection area from the larger heart:

resulting in:

Then select the punched out heart and the inner heart:

and do Boolean Subtract:

Repeat in opposite for the other intersection.

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Carbide Create Pro- What do you want to see?
(William Adams (Carbide 3D)) #10

Once one has:

As a shortcut, import this SVG:

interlocking-hearts

or this .c2d:

interlocking-hearts.c2d (676.7 KB)

One should be able to do 3D modeling to make the overlapping more obvious.

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(William Adams (Carbide 3D)) #11

In order to have an angle though one will need to have rectangles which are much larger for each of the hearts:

Switch to the 3D model tab, assign limited height angles to each rectangle of a suitable height, and then intersect those with each heart.

Angled rectangle:

limiting it to the heart:

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(William Adams (Carbide 3D)) #12

Add the remaining heart:

Probably there’s a better way to do this, but this should at least get one started.

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(Michael) #13

@WillAdams excuse me if I am missing something here, but don’t you need a base that should be pocketed to allow the hearts to be raised? I believe the OP was asking for raised hearts out of a sign and that the hearts have a more rounded edge instead of just getting a 2D pocket look. How do you get rounded raised edges on the hearts on a sign? How does the 3D Finish work with this?

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(William Adams (Carbide 3D)) #14

Yes, you could start with a flat base as part of the 3D model if desired — you could just cut around this.

Rounding the edges would detract from the height difference of the heart parts I was striving for — lots of other ways to do this though.

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(Michael) #15

Well I guess that is what I am not following with your example. Your design shows no reference to the part that the hearts must be cut from so what would your toolpaths be for your design? And if you try rounded edges like the OP hinted at (something more than what you get from a simple pocket cut) is it the 3D finish toolpath that does this?

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(Arjan van de Ven) #16

based on what you describe, I think you want something like this:

I only figured out yesterday how to do this so bear with me;

first you do a normal 2 1/2 set of toolpaths as you normally would, but you need enough depth of the cuts to have space to make it nice and round; I did not do enough of this and the letters ended up a bit more flat than I wanted in the picture.

as part of this I assume you have a box or other bounding graphic element in the Design view.

so after you have the design and 2 1/2D tool paths, the 3D portion comes in

step 1 of this is in the Model screen, where you need to select your bounding graphic element/box.
and then click on the left-most icon, the square/circle combo thingy.

in the first step you pick a “flat” “add” thing, and you need to set the height to the height at which you want the rounding of the text/graphic to start ** measured from the bottom of the stock ** !!!

this defines the floor for the rounded shapes, and you’re not going actually cut this but it needs to be there for the modeling to work

in step 2, you select the text/graphic you want to round, and again use the square/circle tool thing,
but now you pick a “Round” shape. The height you need to set to how much Z you have left to the top, and you can decide to flatten whatever excess you have via “Height limit” by setting it to limit (recommended) or you set it to scale, and then it sort of deflates the air out of the shape until it fits.

now step 3 is in the toolpath view, where you again select the text/graphic you want to round. do not select the bounding box.
and then you pick 3D finish… the only real choice is what bit you want to use and the angle.
in the picture above I used a 2mm flat bit (with slightly reduced-from-default stepover) that I ran in 2 separate 3D finish pases at 0 and 90 degrees.

and that’s it.

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(Arjan van de Ven) #17

I’ve uploaded a C2D file that you get if you follow the steps above, hopefully that makes it more clear than words alone

the C2D file has 2 layers of text where the top layer of text is rounded. I’ve used a 12" x 3.5" x 1/4" stock that’s very popular on ebay as base

CCPRO-rounded-letters.c2d (1.3 MB)

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(Michael) #18

Thanks, the c2d file helps a lot. Much appreciated.

What does the angle parameter actually do in the 3D Finish toolpath? does it somehow affect the final finish? Is it related to some sort of roughing pass? Is this actually controlling the shape of what you are milling?

And sorry for so many questions, but when in the Model Tab, do you know what is the difference between the height parameter in the Shape Parameters versus the height parameter in the Component Parameters?

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(Arjan van de Ven) #19

so a 0 degree angle makes the bit go from left to right and back as part of the 3d shaping; a 90 degree makes it go in the Y direction; 45 degree… well diagonal.

the second finishing pass is depending only on how detailed you want it to be; I used a straight bit not a ballnose so doing 2 passes at 90 degree gets rid of a few ridges

so the height in the shape box is the height of the actual rounding you want; the height in the bottom half screen is basically an additional offset for the start of where to do the rounding

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(Michael) #20

ahhh… ok the angle parameter makes sense now. Thanks.

ok I follow with the heights. appreciate it.

I wish CC had tooltips on the adjustable parameters that would pop up when hovered over.

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