STL toolpathing issues

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Re: STL toolpathing issues

Postby adze_cnc » Thu Oct 12, 2017 4:56 pm

If anything screamed out "3D print me" then this model would be it. With each of those indentations 0.8mm you're going to need an awfully tiny bit to get those inside corners even close to "square".
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Re: STL toolpathing issues

Postby Rcnewcomb » Fri Oct 13, 2017 3:22 am

This is closer to your design. You were right about putting things on different layers. Hopefully you can understand the process I was using. The original vectors from the DWG file are in layer 0. I copied them to different layers and cleaned them up for machinability. The V8.5 CRV file is attached.

Please ask questions and show us your progress.
Split_bluetoothPreview.png
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Split_bluetooth85V01_2.crv
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Re: STL toolpathing issues

Postby FixitMike » Fri Oct 13, 2017 6:37 am

Question 1: Isn't the pass depth for the ThruProfile a little too much? 5.625 mm for a 2 mm dia. bit. Ditto for the StandoffPocket. Unless the material is foam.

Question 2:Does the 2mm end mill get fatter above the cutting portion? If it does I would check for interference with the standoffs and lip while cutting the ThruProfile and StandoffPocket. Easily fixed by making the standoffs round and making the lip (and material) a bit larger.

Question 3: Why the LipProfile toolpath? That edge is also cut by the StandoffPocket toolpath.

Question 4: What does the STL in the title refer to? I don't see any .STL files here. Nor would I expect to for this type of project.

Note: Spaces are permitted in toolpath and Layer names, if you so desire.

I suspect my questions are just covering things that ordinarily would be fixed before cutting.
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Re: STL toolpathing issues

Postby Rcnewcomb » Fri Oct 13, 2017 5:28 pm

Good questions/comments Mike. And as adze_cnc noted, this particular design might be better for 3D printing.
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Re: STL toolpathing issues

Postby Siftyy » Sat Oct 28, 2017 6:17 pm

Thanks to adze_cnc, I did end up 3D printing my design and have a working prototype to play around with.

proto.PNG


Having something physical really does point of the flaws in a design. After getting slightly more comfortable with the software I realized how unfriendly my design was to Vcarve. Here's my redesign and subsequent attempt at creating a toolpath. Whats throwing me off is the 3D fillet I have on the standoff, what is the proper way to create that toolpath?

fillet.PNG


ToolPath2.PNG


I hope it didn't seem like I just ran off with a completed toolpath! School work forced me into a mandatory hiatus but I've been working bit by bit as time allows.
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Re: STL toolpathing issues

Postby ger21 » Sat Oct 28, 2017 6:27 pm

Whats throwing me off is the 3D fillet I have on the standoff, what is the proper way to create that toolpath?

A profile toolpath with a ballnose tool of the appropriate size?
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Re: STL toolpathing issues

Postby Rcnewcomb » Sat Oct 28, 2017 8:42 pm

A profile toolpath with a ballnose tool of the appropriate size


yes, what ger21 said
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Re: STL toolpathing issues

Postby Siftyy » Sun Oct 29, 2017 3:04 am

Worked perfectly :) I wouldn't have been able to make it this far without all your help. I'll be sure to post a final update when I get everything done.
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Re: STL toolpathing issues

Postby Siftyy » Sun Oct 29, 2017 3:26 am

Question regarding the cut slots, would it be necessary to add tabs? or just more work on my end, I have switched to an 1/8" bit, but am worried about the bit breaking or jumping because of a loose piece.
Spllt_bluetooth_v1.1.PNG
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