3D - Cylinder Help

[nexty]

Hi guys,

sorry if the question looks easy for you, but I've recently starting using Autocad for my 3D printing hobby,

I'm currently looking to remove some material on a cylinder, it's not as easy as I tough, I've been watching video over and over on how to remove material on a cube (not an issue) but with the cylinder I feel it harder...

so far I've done it this way,

design my cylinder in 2D with facing top

then switch to iso - using the push/pull command to render the way I need

then I have redefine my Axis and after this is where I'm stuck

please see bellow - the yellow is the materials that need to be removed

only the yellow material has to be removed,

if you have any idea or a "best pratice" for that - I would love to know, I've been stuck for over 4days on that

thanks,

Quentin.

[JDMather]

Did you mean presspull?

Can you attach your *.dwg file here?

Are you familiar with manupulating the UCS?

[nestly2 · Accepted solution]

Because the yellow object(s) do not lie on the surface of the cylinder, you can not PRESSPULL them through the cylinder and also SUBTRACT the new volume in a single operation.  Try using PRESSPULL or EXTRUDE to creates a new solid object first, then SUBTRACT it from the cylinder.

[nexty]

that what I've done and it's working 🙂

not sure what UCS mean, but what I can tell you is I'm not really familiar with the origine set, and  I believe this is the key for 3d...!

[JDMather]

The master of 3D is the master of the UCS (User Coordinate System).

[nexty]

agree, looks like I would need to start watching video again,

any tips?

[PatrickHughes]

Nexty,

JD is correct - to master 3D in AutoCAD you must be familiarwit and master the UCS. One thing to remember is that AutoCAD will always draw objects on the current X-Y plane.

Another thing to be aware of: When Dynamic UCS is turned on the UCS will change as you select objects. I can't fully describe it, I basically hate it and have it turned off.

[JDMather]

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@PatrickHughes wrote:

... the UCS will change as you select objects. I can't fully describe it, I basically hate it and have it turned off.

---

...on the other hand, I find DUCS to be a real time saver and seldom turn it off.

[PatrickHughes]

JD, just curious, do you much in the way of custom lisp routines?

I ask because much of what I do for modelling is through custom lisp routines and DUCS seemed to get in the way of using them. I could probably rewrite them to work that way but it got me a little befuddled when I first encountered it.

I should give it another go sometime.

[nexty]

Ok,

I'll give a try with DUCS enable and will let you know

I feel after practicing a bit yesterday that I'm getting a bit more comfortable

[JDMather]

Actually, if you don't really understand UCS yet, probably best to have DUCS off until you are a master of the UCS.