Help with Geometry
- carbidetooth
- Vectric Apprentice
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Help with Geometry
Hi all. I'd like to duplicate or get close to this interlocking shape.
I'm being up-front and telling you that I (regrettably)avoided math in school and I imagine this is a geometry exercise. I've been putzing around for a couple of hours without success. I think all sides have to be equal, right? I just don't know how to get there. Help appreciated.
I'm being up-front and telling you that I (regrettably)avoided math in school and I imagine this is a geometry exercise. I've been putzing around for a couple of hours without success. I think all sides have to be equal, right? I just don't know how to get there. Help appreciated.
Re: Help with Geometry
I only spent a few minutes, but this is what I came up with. It's all triangulated. Fairly simple using copy array.
- carbidetooth
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Re: Help with Geometry
Thanks Samson. I'd love to be able to do that in few minutes. I'm afraid triangulated means little to me in this context. Could you walk me through process it a bit more so I can latch on conceptually? I should add that I think I can manage the array if I can get the process of creating a single shape.
- mtylerfl
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Re: Help with Geometry
Hi Peter,
I made a quickie video (less than 3 minutes long) of one way how to create a shape like what you are working with. The shape can be varied easily via how you alter the original triangle shape that it is based upon.
Here is the video link:
https://www.screencast.com/t/wZ2uRMWZiie
I made a quickie video (less than 3 minutes long) of one way how to create a shape like what you are working with. The shape can be varied easily via how you alter the original triangle shape that it is based upon.
Here is the video link:
https://www.screencast.com/t/wZ2uRMWZiie
Michael Tyler
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facebook.com/carvebuddy
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- carbidetooth
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Re: Help with Geometry
Michael, you are the MAN! I can't tell you how grateful I am that you took the time to make that.
I muddled through a number of what I thought were reasonable approaches, all ending in frustration of some level or another. In the end I chose desired angles and stepped around the shape using a single dimension which worked but felt really clumsy and prone to error.
FWIW, this is for a puzzle of sorts I'm going to make for my grandson's third grade class. Each student gets a single shape to decorate as they wish and then all come together on backboard. The theme being something along the lines of "many yet one".
I didn't anticipate Grandpa would get stumped right out of the chute, so I guess we both get to learn something!
Thanks again.
I muddled through a number of what I thought were reasonable approaches, all ending in frustration of some level or another. In the end I chose desired angles and stepped around the shape using a single dimension which worked but felt really clumsy and prone to error.
FWIW, this is for a puzzle of sorts I'm going to make for my grandson's third grade class. Each student gets a single shape to decorate as they wish and then all come together on backboard. The theme being something along the lines of "many yet one".
I didn't anticipate Grandpa would get stumped right out of the chute, so I guess we both get to learn something!
Thanks again.
- carbidetooth
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Re: Help with Geometry
And thank you Gary. Yet another bit of Vectric Wisdom. "Polar" array is new to me. Is that a "circular" array by a different name?
- highpockets
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Re: Help with Geometry
Sounds like a great project!
Remember to allow for the diameter of the bit you choose to cutout each piece or the puzzle won't fit together correctly.
If you're using a laser to cutout the piece then ignore the above....
Remember to allow for the diameter of the bit you choose to cutout each piece or the puzzle won't fit together correctly.
If you're using a laser to cutout the piece then ignore the above....
John
Maker of Chips
Maker of Chips
Re: Help with Geometry
Yes, it's the circular copy. Once you do the copies, you'll still have to move them to connect the ends. Once you get the hang of it, it should just seconds to do.
Gary
Gary
- carbidetooth
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Re: Help with Geometry
One other aspect of this I could use some help on. All MDF so no grain orientation, I'll cut the shapes separate from the "big picture" pocket they'll fit into, so no tool clearance concerns. I'm thinking clearances between pieces perhaps .030 for easy assembly and disassembly, but that's a guess on my part. If anyone has done similar perhaps you can advise what works well.
Thanks again.
Thanks again.
- adze_cnc
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Re: Help with Geometry
One thing to remember is that all the "inside corners" will be cut rounded. You should use the fillet tool to radius all the outer corners (or all corners for completeness) so they nest in with the rounded inside corners.
See attached file. Knowing that I'll cut this shape with a 1/4" router bit I used a fillet with 1/8" radius on all corners. I didn't need to do the three "inside" corners as you get a fillet for free when cutting them. But! I did fillet them just in case I decide to use a smaller than 1/4" bit (say 6mm, 3/16", or 1/8").
Steven
See attached file. Knowing that I'll cut this shape with a 1/4" router bit I used a fillet with 1/8" radius on all corners. I didn't need to do the three "inside" corners as you get a fillet for free when cutting them. But! I did fillet them just in case I decide to use a smaller than 1/4" bit (say 6mm, 3/16", or 1/8").
Steven
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- BrianM
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Re: Help with Geometry
Michael,mtylerfl wrote:Hi Peter,
I made a quickie video (less than 3 minutes long) of one way how to create a shape like what you are working with. The shape can be varied easily via how you alter the original triangle shape that it is based upon.
Here is the video link:
https://www.screencast.com/t/wZ2uRMWZiie
That is a very impresive and consise answer to the question, Adze that identifies the practicalities of actualy cutting it. Teamwork at its best! I love this forum
Brian
- FixitMike
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Re: Help with Geometry
And yet another method.
Good judgement comes from experience.
Experience comes from bad judgement.
Experience comes from bad judgement.
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Re: Help with Geometry
I love reading through the variety of solutions. Maybe this should be a weekly event. One drawing problem per week.
- WNC_Ed
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Re: Help with Geometry
Wow, that poor cat got skinned over and over
The Vectric software is pretty dang amazing but what puts the software over the top is the users on the forum.
I learn something on here just about every day.
Thank you all!
The Vectric software is pretty dang amazing but what puts the software over the top is the users on the forum.
I learn something on here just about every day.
Thank you all!
Maker of sawdust