[Plugin] BoolTools just released!
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Hi Jeff,
By any chance (and according to the model "normally"), are you not modeling in fairly small scale? You remember that SU has problems with the intersect operation (and the follow me tool) with very small faces that have about 1mm (or 1/16") long edges. I wouldn't be surprised although of course I'm not sure. But (modeling) plugins can only use SU's native tools so they are also limited by their glitches.
So try to scale your model up by 10 for instance, run the tool and see if it works. If okay, scale back.
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Hey G,
I tried your suggestion but still had the same result. Here's the SU file. Thanks for helping.
Jeff
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Hm... I seem to get weird results as well. Let me play more.
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Okay, I did some more testing and came to an interesting issue (not with the plugin).
I Copy > Pasted in place the spiral into the other group and did a "traditional" intersection and deleted unwanted geometry (came out pretty well and quick). Then I was saving it and SU said there are some minor problems in the model and if I want to fix them. I chose yes and see the details > A whole lot of them!
I undid the fix and saved without it (see attached). I could guess that this is why the plugin resulted in that bad geometry but where it comes from,I don't know.
Save the file first to your HD
Open it and choose NOT to fix the problems on opening
Save it and fix the problems but also choose to see the details there.
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I did as Gaieus but I scaled it up further 100 times. The result looked good but it still had a lot of errors, and letting SU fix them made some faces disappear. It might be that there are still quite small segments created in the intersections. The spiral has a lot of segments for a small part, I would guess that 10-12 would look almost as good.
Anssi
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Jeff,
OK, as promised here's a tutorial I put together for creating a sketched drill bit with Bool Tools and SU. I say sketched since a drill bit has a few more geometric features involved. This is my first tutorial so bear with me and if it works perhaps I'll move it to the tutorial section of Sketchucation.
Another way to make a bit involves using the rubies "grow" and "skin." That can create a more precise drill bit but is a bit more tedious since each profile has to be skinned.
Give this a shot and let me know how it works out.
Gus
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Hey Gus,
For your first Tutorial, really good! It helped for sure. Also, I'm going to get that ruby you used to make the helix a tube. That's for that too
Cheers,
Jeff -
Wondering....does the precision of the helix and the edge count need to be at a certain amount or do they need to match?
Cheers,
Jeff -
Jeff,
Thanks and I'm glad the tutorial helped.
As for the segments I match them overall in the model out of habit. The helix segmentation will match the cylinder however the tube will not since it twists around the helix. Thus having them match doesn't really serve a purpose since the tube segment intersections will never meet exactly with the cylinder. I just tried this with a 35 segment cylinder and it worked just fine.
So I think no, they don't have to match. A smaller segmented tube will actually subtract more easily from the cylinder however it creates a rather rough looking object. 24 segments is good overall. I think the tubes default to ten segments.
Gus
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Wonderful script. Thank you.
@rickw said:
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I use the same shortcut! Good thinking!
Me three. I adopted this key-combo from Xara which implemented a paste-in-place quite a while ago (their paste, ctrl-v, pastes in the center of the screen).
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I am trying to do the Drill bit thing and when I try to do the difference tool it just hangs. I have set the no. of Facets for each at 24. What is the problem? I can't view the Tuts cuz I don't have 7 yet. I am using the drawhelix.rb and the follow me tool to create my helix. Is this a good way?
D
EDIT: I got it to work, but I had to simplify the model considerably. 12 facets for the helix and the cylinder. Looks Okay I guess. Could I have done it a different way? That is . . .If I ever need to draw a drill bit in a real design situation.
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David,
Here's the tutorial in Version 6.
I recommend using drawhelix13.rb for the helix and lines2tubes.rb for the tube. Follow me will distort the tube too much in this case -- even though it will still work.
Your 12 segment drill bit looks pretty good. As far as SU hanging consider that it might take some time depending on your CPU capacity. It might take 5 minutes. In my case, certain complicated functions will lead to the appearance of SU locking up when in fact it hasn't. This will happen even when I'm rendering. Sometimes I have to let SU work and not touch a thing or move the mouse away from the SU screen otherwise it will cause SU to crash. Try it again with 24 segments only this time give it a good solid 5 minutes or more without doing any other computer tasks.
Gus
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Thanks for the TUT. it was the DH13 rb that I did use. I think I have the L2Tube rb as well, although I didn't use that one.
Thx,
D
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As per your Tut. Thanks much.
David
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I'm not sure why, but I still get some missing faces when I try to do a drill bit. I match the segments in the helix and the cylinder. I build it large so I can scale down....same result. Very frustrating. Could there be any issues with other rubies effecting the ones I use for this process? The gray hair just keeps coming as I keep trying to figure it out. HELPPPPPP!
Frustrated, Jeff
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Jeff,
I've had the same situation occur as well. So far it seems as though you have to try these at random at a larger scale. Anytime you get an intersetion that is around 1/16 inch or 1 mm it will corrupt the subtraction. At the same time, if you scale it too much it will corrupt the subtraction. I tried it once at 1,000,000X and the corruption was even worse.
So far my computer has survived the trip out the window and down 6 floors. It's been almost 7 years now. I have been tempted.
Gus
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@gus r said:
Jeff,
I've had the same situation occur as well. So far it seems as though you have to try these at random at a larger scale. Anytime you get an intersetion that is around 1/16 inch or 1 mm it will corrupt the subtraction. At the same time, if you scale it too much it will corrupt the subtraction. I tried it once at 1,000,000X and the corruption was even worse.
So far my computer has survived the trip out the window and down 6 floors. It's been almost 7 years now. I have been tempted.
Gus
BoolTools uses the intersection method from the SketchUp API which is the exact same function as the 'intersect' context click function that can be accessed from the UI. Sometimes, the intersect method fails (likely due to precision errors). For complex operations (such as a helical subtraction, the chances of these precision errors are greater. If the intersection method fails to execute properly, you will get strange results with BoolTools.
ClickDraw: If you could post your SKP file, I can take a look just to make sure that your problems are not being caused by some other issue.
Dale
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using a modifier key to keep the difference-object is a great idea. so we will see that in the next version? (along with nested grouping support
)ps: I use 'Ctrl + Shift + V' for 'Paste in place' as too. soon Google will integrate it as a default shortcut...
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why i can't see it
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@plot-paris said:
using a modifier key to keep the difference-object is a great idea. so we will see that in the next version? (along with nested grouping support
)ps: I use 'Ctrl + Shift + V' for 'Paste in place' as too. soon Google will integrate it as a default shortcut...
just bought it
awesome ,but +1 on this option.
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