Newbee can't get a solid

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Newbee can't get a solid

Postby Micoma » Fri Mar 22, 2019 11:35 pm

I am using Sketchup Make 2017. I am not a pro so everything is trial and error. Finally have my object sketched and want to be able to print it but I know it is not a solid. I used Solid Inspector but couldn't get there. I have read and watched tutorials but just don't know how to fix it. I am hoping someone will help me. The "pipes" have to be open and the notch in the middle has to remain. I think it looks pretty good for not knowing what I am doing but it doesn't do any good if the design just stays on the computer. I have uploaded the design. Thanks for your help.
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Re: Newbee can't get a solid

Postby pbacot » Sat Mar 23, 2019 6:39 am

You just have too many holes and things inside your group. Also the groups should not have anything in it but faces and the edges that connect the faces together. If I am reading this right, you should abandon the uneven portion and use the clean portion.
Also you have faces and edges in the middle. It needs to be a clean shell of an object. You also have groups inside the group. You can't have that, only edges and faces.
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Last edited by pbacot on Sat Mar 23, 2019 8:18 am, edited 2 times in total.
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Re: Newbee can't get a solid

Postby pbacot » Sat Mar 23, 2019 7:04 am

All the objects need to have thicknesses like real world objects, with all the faces drawn including the faces of cuts through the walls of the objects. All the inside spaces between the surfaces are clean, clear of edges and faces, and all connected and open where the forms meet. You picked a difficult one.
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Last edited by pbacot on Sat Mar 23, 2019 8:57 am, edited 2 times in total.
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Re: Newbee can't get a solid

Postby pilou » Sat Mar 23, 2019 10:19 am

Some messy indeed! ;)
You must be very precise !

All must be very clean and closed!

Enable Display / Hidden Geometry and make some many zoom everywhere for be sure!

Use Join Push Pull by fredo for make thickness on simple volumes or surfaces! :ugeek:

messy.jpg
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Last edited by pilou on Sat Mar 23, 2019 7:21 pm, edited 1 time in total.
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Re: Newbee can't get a solid

Postby TIG » Sat Mar 23, 2019 2:48 pm

Rather than trying to fix your model - which has many tiny errors - can I suggest that you start again in a clean context.
Also at the small size you are modeling I suggest you Scale up x10 - you can always scale back down at the end... Otherwise small facets can fail to form as edge length is limited to 1/1000".

Switch on the Axes - they are your ally.
Use View > Mode Monochrome, and ensure that the Style's back-face color is distinctive.
Also toggle View > Hidden Geometry ON/OFF as you go to help see what's happening.

First model the central vertical part.
Draw a large flat temporary circle at the origin, making sure that one of its 'nodes' is on an axis - e.g. the red axis.
Make the circle's segment count 24/48/96 etc - so it divisible by several numbers.
Erase the circle's face...

Now work in a vertical plane - on and parallel to the red axis.
Draw the vertical-section through the required central part [ignore the horizontal 'pipes' for now].
Give it the required thicknesses for the part.
Note that it's symmetrical about its center-line so you could draw half of it and then group it and copy, then flip it etc...
When it's done, ensure it's one single face, with no divisions or faceless edges left behind.
Now select the flat circle to use as a FollowMe path.
Run FollowMe and pick the cross-section face.
You should now have the entire vertical central part as a solid.
Ensure the form is oriented with no back-faces showing - e.g. reverse one and use the context menu to flip and orient as necessary.
Select it and make it into a temporary group.
That group should report in Entity Info as a solid.

Now model the horizontal 'pipes' part.
Put a temporary guideline through the center of the central part's group, parallel to the red axis.
Draw a large circle centered on that with its axis parallel to the guideline, away from the rest, to use as a path with FollowMe later.
Again, ensure that its 'nodes' is on an axis - e.g. the green or blue axis.
It's segment count should be the same as the first part's path.
Erase the circle's face.
Now draw the long-section through the whole 'pipe'.
Ignore the 'central slot' in it for now...
As with the first part, it is symmetrical, so you only need draw a half and copy/flip etc.
When you have a single face made, use the preselected circle path with FollowMe and that long-section face to form the 'pipe' shape.
Ensure the form is oriented with no back-faces showing - e.g. reverse one and use the context menu to flip and orient as necessary.
Select it and make it into a temporary group.
That group should report in Entity Info as a solid.

Make a grouped block the size of the 'central slot' and position it accurately through the center of the 'pipe'.
Edit the pipe-block.
Use View > Component Edit > Hide Rest of Model > ON to see what you are doing.
Select all.
Context-menu to Intersect with model.
There should now be cut marks where the pipe intersects the vertical part and the 'slot'.
Exit the edit.
Edit the Vertical part and repeat the intersection.
There should now be cut marks where the pipe intersects the vertical part.
Exit the edit.
Now re-edit each of the two parts' groups, and tidy up the intersecting geometry interfaces at the 'cuts marks'.
Either delete unwanted faces or select/Edit>Cut them and the paste in the edit of the 'other' part - this way you
Delete the unwanted slot-group, guidelines and circle paths.
Select the pipe-block and Edit>Cut, immediately edit the vertical part's group and Edit>PasteInPlace.
Explode the pipe-group so that it merges with the main part.

The selected group should now report as 'solid' in Entity info.

If you scaled it, now scale back down again...
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Re: Newbee can't get a solid

Postby Micoma » Sat Mar 23, 2019 6:31 pm

Thanks for all the comments. It has opened my eyes to things I was not aware of before. I will give it a go trying to follow TIG's instructions but, like I said, I am not a pro and this was a see-if-I-can-do-it thing. I imagine this is going to be too much for me to learn.
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Re: Newbee can't get a solid

Postby Micoma » Sat Mar 23, 2019 9:48 pm

Using followme makes sense to me since the end result would be solid. But I can't figure out how to make a profile that I can use with followme.
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Re: Newbee can't get a solid

Postby pilou » Sat Mar 23, 2019 10:31 pm

Some idea ;)
Enable Display X Ray, Hidden Geometry

Push Pull
Scale + CTRL Perimeter
Triple click =select all
Move + CTRL * 3
etc...


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Re: Newbee can't get a solid

Postby Box » Sat Mar 23, 2019 11:27 pm

Don't be frightened of it, there is no magic involved.
Everything in SU is just edges and faces, so draw the profile at right angles to the path follow me will do its job.
Obviously this isn't accurate, but it shows the process. You can measure and add guides as much as you need but it all comes down to a simple set of edges that form a face that can make the shape you want when swept around a circle. (or other shape for that matter)
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Re: Newbee can't get a solid

Postby Micoma » Sun Mar 24, 2019 2:43 am

Wow, thanks for the video. I DID IT!!!
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Re: Newbee can't get a solid

Postby Micoma » Sun Mar 24, 2019 4:22 am

Sorry to the trouble. The vertical section went great. I am now doing the same with the horizontal section but the ends aren't closing after the follow me. I read some where that if the object was too small the ends might not close so I expanded it double and it still is not closing. What am I doing wrong?
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Re: Newbee can't get a solid

Postby Box » Sun Mar 24, 2019 4:37 am

When we talk about scaling up to edit we really mean 10, 100 or 1000 times bigger, not double.
If you scale yours up by 10 the face will form.
Or use the Dave Method as described here.
viewtopic.php?f=18&t=68150
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