How To Knife design / program

knifedonk

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Jan 31, 2022
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Hello everybody,

what is the best program to design folding knives in 3D?

I have never studied design and am looking for a beginner friendly program to start taking my drawn on paper designs to the next level.

Would be grateful for any suggestions and shared knowledge?

Also, how do knife designers get paid? Not looking for a number but just in general...is it per design or do they get a share of all sales as long as the company manufactures that specific design/knife?

Thank you everybody!
 
Fusion360 (free just some modules are not available, also A LOT of youtube tutorials).

If budget allows, Catia, UGNX
 
About payment I think it depends on the company and the designer. Established designers get more obviously. But to sell a design I think you have to actual knives made to spec to show the companies, I don't think they will make them for you - at least not for free.
 
While lots of folks like Fusion 360, it's all cloud based on their server - you're not allowed to keep the designs on your own computer. Also if I remember correctly, the designs created using the free version (is there still a free version other than student?) are in the public domain.

I personally prefer FreeCAD - it's free. Just as powerful as Fusion ($500/yr) but less expensive. While it's possible to get Gcode files from FreeCAD it's not as easy as with Fusion.
 
While lots of folks like Fusion 360, it's all cloud based on their server - you're not allowed to keep the designs on your own computer. Also if I remember correctly, the designs created using the free version (is there still a free version other than student?) are in the public domain.

I personally prefer FreeCAD - it's free. Just as powerful as Fusion ($500/yr) but less expensive. While it's possible to get Gcode files from FreeCAD it's not as easy as with Fusion.
While fusion is cloud based you can download and keep any file you want from fusion, either in the native .f3d format or a .step file or others .

I haven't used freecad, looks interesting though and is still parametric which is cool.
 
It is too bad that SolidWorks doesn't follow Fusion's lead with respect to personal non-commercial use...

Some stuff I did in SolidWorks for a biomedical engineer a few years back:
assembly.jpg
 
Another thing to consider is the computing power required to run Solidworks compared to Fusion. I personally am a Solidworks fan, I think it is still better and it isn't completely cloud based (yet) so it is technically more secure than Fusion. The big advantage of the cloud based systems is you don't need a $3000+ computer to run them. You just have to have good internet.
 
a comment on Fusion. About five years back I had a Fusion account for teaching some students about engineering. I could run Fusion on my home computer, which was powerful enough to run CAD without the supposed cloud advantage. Then one bright day Fusion announces that the graphics card that it used to work with, is not supported anymore. That was it, no more access to Fusion or the models.
 
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It is too bad that SolidWorks doesn't follow Fusion's lead with respect to personal non-commercial use...

Some stuff I did in SolidWorks for a biomedical engineer a few years back:
assembly.jpg

You mean that $48 a year is too steep? Or that the limitation on generated income is too low?
“[SOLIDWORKS for Makers provides full-functionality 3D CAD tools for personal use for just $48 USD a year. It’s perfect for makers, hobbyists, and DIY enthusiasts, who generate less than $2,000 USD annually from their projects.“

I was bemoaning the lack of options for CAD and a colleague told me about this Solidworks license.


Solid Edge also has a Maker license for non commercial use.
 
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Personally I HATE the whole subscription model that so many software makers have adopted. It drives me crazy.
Maybe I should start charging a monthly fee for knives... Then once a year I can tell everyone that they have to buy a new model or the knife will go dull
 
Personally I HATE the whole subscription model that so many software makers have adopted. It drives me crazy.
Maybe I should start charging a monthly fee for knives... Then once a year I can tell everyone that they have to buy a new model or the knife will go dull
I generally don't like it either but in this case it allows us small guys to get started for relatively cheap instead of having to fork over $5k for a program up front. And for those that want the 'program on your computer' there is always solid works 🤷🏻‍♂️
 
You mean that $48 a year is too steep? Or that the limitation on generated income is too low?
“[SOLIDWORKS for Makers provides full-functionality 3D CAD tools for personal use for just $48 USD a year. It’s perfect for makers, hobbyists, and DIY enthusiasts, who generate less than $2,000 USD annually from their projects.“

I was bemoaning the lack of options for CAD and a colleague told me about this Solidworks license.
I did not know that. I will have to look into it.
 
K knifedonk ,
As a “designer”, are you just an artist, or are you an artist and an engineer? What’s your knife making experience?

Folders are engineering, not just stylised product design. CAD can do artistic design but its great strength is in parametric precision, you can adjust the position of a pin by 0.25mm, then again by 0.01. Every hole, point and surface can be adjusted just as precisely. The price of that precision and control though is pedantry. It is slow to build a realistic model. On paper a pleasing curve is just a French curve and pencil stroke away. In CAD it’s a spline curve with multiple points to be selected, tangency constraints to be applied, and possibly curve analysis to check the spline is free of minute but sudden slope changes.

One of the great challenges for an amateur designer is how to translate their CAD model into a real functioning object. Let’s say you draw on paper, then you make a prototype from your drawing, then you create a 3D CAD model…now you need to get the model back into the real world to check that your model matches your original prototype. Not too bad for handle shapes, you can get 3D prints, but if you are designing a folder, does your mechanism work? If you cannot get your model made with enough precision, you cannot know whether the model is right.

When I had a design made by a major manufacturer, they offered to pay me a percentage of the wholesale value of each knife sold. Another chap I talked to said he negotiated to be a reseller, and he made more selling the knives than he would on royalties.

I think the most incredible thing about having a knife manufactured, based on my prototype, was that the manufacturer took the risk in the first place! It was only because I was working on behalf of a website that had a name and expertise on tap that it happened. It was nerve racking to realise that many tens, even hundreds of thousands of dollars was being invested on the basis that my design was good. Sure, years of work and market testing was done by the manufacturer between my sending them the prototype and the knife going into production, but you still feel the weight of responsibility.

I was asked, and it was a fair question, why should the manufacturer take on the design I had? They usually work with established makers who have recognised Names in the industry. What makes you or your design worth the time, money and risk? If a production run is a 1000 units, and there is $100 of tooling, materials, process and labor in each one…what makes your design worth a $100,000 gamble?

I wish you the best of luck!

Chris
 
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I generally don't like it either but in this case it allows us small guys to get started for relatively cheap instead of having to fork over $5k for a program up front. And for those that want the 'program on your computer' there is always solid works 🤷🏻‍♂️
Even Solidworks is a subscription base. Supposedly if you don’t pay for the “maintenance” every year the software has something built in that follows the clock on your computer and when your year runs out, if you aren’t up to date, it shuts itself down. That’s what I’ve been told anyway. Such a rip off.
 
Even Solidworks is a subscription base. Supposedly if you don’t pay for the “maintenance” every year the software has something built in that follows the clock on your computer and when your year runs out, if you aren’t up to date, it shuts itself down. That’s what I’ve been told anyway. Such a rip off.
Didn't know that, yeah that's super frustrating!
 
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