Thread: 3D printer and CNC routers
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25-07-2017 #1
As a sad git i have a vague ambition to get/build myself a 3D router/plasma table.
Being a person with scale issues i normally go big as such there is not one single chance of one fitting in my current workshop.
The foundations for the new workshop (the wife thinks its garage) have been laid
So at some point in the next few years i should be starting out
NOW
Is it a good idea to get a 3D printer to help learn the principles of moving a tool around a 3D space and using CAD?
I have a bridgeport manual mill so the idea of milling metal is not an alien one to me.
And for most of the stuff i am making at home i use CAD (Chalk Assisted Design) on the big welding table i have so to have something which forces me to use proper CAD might be a good idea
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25-07-2017 #2And for most of the stuff i am making at home i use CAD (Chalk Assisted Design) on the big welding table i have so to have something which forces me to use proper CAD might be a good idea
Have a look here:- https://www.youtube.com/watch?v=A5bc9c3S12g..Clive
The more you know, The better you know, How little you know
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25-07-2017 #3
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25-07-2017 #4
Okay
Currently to design something i can either spend some time learning fusion 360 OR i can grab a lump of chalk and draw it out on the bench.
I can work chalk perfectly
I can use the draw, circle and delete functions
Which is all of them
I have no need for using fusion 360 apart from when i occasionally send stuff off to a lazer cutter which is rare as it is expensive and a pain in the behind.
My thinking is if i have a 3D printer there is no shortcuts
I need to use fusion 360
So what else can i carry over from a 3d printer or is there no cross over whatsoever?
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25-07-2017 #5
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25-07-2017 #6
So stuff learnt in fusion 360 for 3d printing will be no use whatsoever for a router/plasma
So what CAD package should i use as the 3D printing guys appear to like fusion 360
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25-07-2017 #7
For 3D printing, you only need to use the CAD portion of Fusion 360.
For routing or milling, you need to use both the CAD and CAM portions.
For plasma, Fusion is overkill imo, as you really only need simple 2D CAD.Gerry
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26-07-2017 #8
I'm not sure that's true - familiarity with the program counts for something, and on the CAD side beyond keeping in mind the limitations/strengths of the particular manufacturing technology there is no difference in the fundamentals of designing an object whether its going to be printer/lasered/waterjetted/milled/whatever.
Sure the CAM side is redundant when using a 3D printer, but getting the hang of modelling I think it's a valid option... and designing the object in the first place is at least half the battle for people new to cad/cam. A workable if not stellar 3D printer can be had for not a lot these days and they are quite useful little beasts for jigs/fixtures in my experience.Last edited by Zeeflyboy; 26-07-2017 at 07:14 PM.
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26-07-2017 #9
That is my thinking
That CAD is well CAD
So if i learn CAD for a 3D printer i am one step towards CAD for a 3D router
Unless folk are working on the assumption that everyone can use CAD
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26-07-2017 #10
That would be my personal opinion, that the skills you learn in the CAD side are very much transferrable. The CAM side of course is like chalk and cheese, but having got to grips with CAD at least that's one less thing to worry about.
It's worth noting that it's not identical - certainly you have more freedom when making a design for 3D printing as it is very simple to print things with very complex shapes that would be a nightmare to machine on a 3 or even 4 axis, sometimes just impossible even on a 5 axis. Though your results are generally going to be much better if you design with an idea of how it will be printed and design accordingly regarding overhangs and angles to minimise use of support material or optimise strength.
When designing for a router/mill, more thought needs to be given to how you are actually going to make it while you design. That's the main difference in my mind, but the actual process of getting what is in your brain out into 3D space is ultimately the same.
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