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codecage
(@codecage)
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2020-05-08 11:36 pm  

This is a post about Fusion 360, but since I would guess that most of the Fusion 360 gurus on this forum might be 3D printer users I thought I would see if this post generates any responses.

Some of you may be following Paul McWhorter's series of AI on the Jetson Nano, and he has a "stand" that a student of his designed to hold his Pan/Tilt mechanism of the object following camera.  The student has long since graduated and Paul does not have the STL files for his "stand."  Well, I am trying to design one on my own, but have been unable to figure out how to put a slot in one end of the box that encloses the Pan servo.  All Fusion tutorials I've come across about cutting slots seem to be using an older version of Fusion 360.  The version I have, and I think it is the latest, does not have a "slot" selection on any menu I can find.

For a test fit of the servo, I printed a small extruded rectangle with "holes" placed on one end with multiple overlapping  holes.  Really sloppy but it allows the control cable to come out on that one end.

Can anyone tell me what I'm missing and point me in the right direction to get a slot cut in a surface?

SteveG


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Spyder
(@spyder)
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2020-05-09 12:20 am  

@codecage

Could you post the stl you've got, so we can get a better idea what yer talking about ?


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codecage
(@codecage)
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2020-05-09 12:32 am  

@spyder

Here is the STL file.  It was just a test file to see how the servo fit.  Needs to be make just a bit larger on the inner dimensions as the servo fits just a little to tightly.  But you can see the "slot" I made on one end with the overlapping holes.

 

SteveG


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Spyder
(@spyder)
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2020-05-09 2:02 am  

@codecage

Is this better ?


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codecage
(@codecage)
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2020-05-09 11:53 am  

@spyder

Not sure I can tell anything different.

SteveG


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Spyder
(@spyder)
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2020-05-09 2:05 pm  

@codecage

Really ?

compare

Maybe that's not the slot you were talking about. I made the slot about .75mm larger. Just larger enough to remove the parts that look like a mouse chewed it open.

Maybe you need a tad more than that ?

Or maybe you were talking about the inside box part needing to be bigger ?


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codecage
(@codecage)
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2020-05-09 2:17 pm  

@spyder

OK, in your 'pics' i can see the difference!  What are you using to render the two objects so the colors are different?  The one on the right looks like my jagged slot and the one on the left must be the one with the wider slot that smooths off the jagged edges.

I have now found the way to get to the slot tool in the version of Fusion 360 that I'm running.  It is a somewhat, IMHO, roundabout way, but it works nonetheless.

You just type an 's' for search and type 'slot' in the search window.  I'll attach a picture of the results shortly.

SteveG


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Spyder
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2020-05-09 2:25 pm  

@codecage

I'm currently (this week) using Idea Maker as my slicer. The color depends on which item is hi-lighted (or, selected)


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codecage
(@codecage)
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2020-05-09 5:17 pm  

@spyder

Here is the pick of the latest 'box'

Try2

Used a 2-point rectangle to define what I wanted cut out of one side and then extruded in a negative direction for the thickness of the wall.  It is printing even as I type this with somewhat larger inner dimensions so maybe the servo won't be such a tight fit.

SteveG


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Spyder
(@spyder)
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2020-05-09 6:44 pm  

@codecage

Oh, I see. You wanted the slot to go all the way. I didn't understand that

I'm sorry


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codecage
(@codecage)
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2020-05-09 11:31 pm  

@spyder

It would work either way in my situation, but since I was having issues finding the 'slot' tool in Fusion 360 and then stumbled onto the 2-point rectangle methodology of making a cutout, I just used that instead of the slot, which has radius cuts on each end.

Thanks for helping me out!

SteveG


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vek
 vek
(@vek)
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2020-06-14 12:02 am  

I have just purchased my first 3D printer and I am amazed how easy it was to set up and start printing.  It is a Dremel 3D45. The printer has a built in filter so is very safe to use. I am using Solidworks and Simplify3D software to create parts and assemblies.  So far I have made an Arduino case and storage holders for my electronic tools. The 3D printed parts have a very good surface finish and are very accurate. I have also made M10, M18 and M42 nuts and bolts which work great. 

My latest product is a hinge assembly which has 3 separate parts which printed in one go and is fully functional.  I did not use any supports or rafts for the hinge and was wondering if anybody knows how the centre dowel pin was printed as it is floating in air ( i.e the 0.4 mm clearance ) ?


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Spyder
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2020-06-15 12:56 am  

@vek

You can't print in mid-air

Why not design the hinge so it doesn't have any floating parts ?

Is there a rule which states that "all hinges must have a separate hinge pin" ?

 


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vek
 vek
(@vek)
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2020-06-15 1:30 am  

Thank you for your reply.

The hinge that I made is fully functional and works fine. Do you know how the printer does this as I did not use any supports?  I could understand it working with supports as they would break off when the hinge rotated. It must use bridges to make the central dowel but how are they supported?  Thank you for the batmanflexstl, I wonder if he has supports or just uses bridging !!

Yes you are correct in saying that the design could have a fixed extruded pin coming directly out from the hinge main body.  I just wanted to understand how the design I made actually 3D printed and fully worked?

 

This post was modified 3 months ago 3 times by vek

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Spyder
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2020-06-15 3:28 am  
Posted by: @vek

batmanflexstl, I wonder if he has supports or just uses bridging

Bat has no supports. Bridging only. And I haven't seen your hinge mechanism, so I can't comment on it, but I would suggest that you keep in mind the orientation of the print can change the dynamics of how it gets printed

Flat could cause the parts to fuse, where a 90 degree change in orientation might not


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