Trout Landing Net Design Fusion 360 (beginner)

[spartyon8]

I am new to the cnc hobby and have made a few items such as edc/dump trays, phone chargers, fly fishing boxes, etc. I am now wanting to use it to create the mold for a landing net but am stumped as to where to begin with computer designing of an odd shaped elipse. Does fusion 360 have an option to find the circumference of odd shaped elipses (I couldn't figure it out on my own. Thanks and I appreciate any help/direction.

Peter

 

[Echd]

I'm not exactly sure what you're asking, but one of the best ways to make a rough "duplicate" of something is to take a good top down picture of an item in a way where camera lens and perspective doesn't distort it unduly, import it as a canvas, and calibrate the canvas based on a dimension between two spots that you can measure. Ill often put a ruler in the pictures of things I do this to and then calibrate based on the markings of the ruler.

It may not give you a perfect down to 0.001" copy, but if you do that and then just trace the part you want using the sketch tools, you can probably get a very good copy of the ellipse you need. I've made a lot of quick and dirty (and some not so dirty) repair parts for things I did not have actual specs for this way.

 

[Wilsoncb]

I found Fusion sketch very difficult to use. I draw it in AutoCad and import the shape.

 

[Michael Mathews]

are you trying to create a form from scratch? or are you trying to duplicate something that you already have? I find it easier to create a form from scratch in Fusion 360. Sometimes I have to play around a bit but usually it works out.

 

[JNCarr]

If you send the dimensions of the major and minor axis and the desired thickness of the hoop, I'll return a dxf file of it which you can import directly into VCarve or...
If you want to cut the handle as the same piece, send that info also.

 

[JNCarr]

Here's a very quick example. I just made up the shape after looking at a few nets on line - so it's probably not what you want.
My software (not Fusion) says the shape's perimeter, not including handle, is just over 54".

 

[spartyon8]

I was looking to do some like the following (most likely B2 or A1 styles):

I am just stuck on how to take the circumference of the actual net and translate that into Fusion 360. Ovals and Circles I can figure out, it is more the oblong/irregular shapes that get me.

For those wondering what a form looks like, here ya go:

I was planning on cutting my forms into quadrants as I am using a Genmitsu 4040 Pro as the cnc and the bed size is limited. I haven't picked out a net size yet, I was wanting to play with sketches before I picked out a size to see if I could even do it. This is what a typical replacement net looks like that I would need to design a shape around:

 

[JNCarr]

I'm completely unfamiliar with Fusion, so this might not make sense -
Draw an ellipse with the major axis a little longer than finished dimension and minor at the finished dimension,
Grab a point on the major axis and move it toward the center until it's at the desired dimension. This will distort that portion uniformly.
Adjust the Bezier handles if needed to increase the width.

If you pick the which of the shapes from the picture you sent, I'll return an image and then the dxf.

 

[spartyon8]

Thank you for the offer but I am going to politely decline. If I don't try to learn I never will, and what I love about woodworking is the learning process.

 

[JNCarr]

No worries - someone with Fusion experience can give you help on manipulating the shape.
Best of luck and keep us posted on the progress!

 

[mkepke]

Are you trying to create a parametric design?

Otherwise import an image of the shape that you like into a vector drawing program*, use the program's trace function to convert the image to vector(s) and export & import it to F360. From there, scale the vectors to match your preferred examples.

You can probably import the image directly into F360 and trace it by hand within F360 to create the necessary vectors. e.g.

There's no need to actually worry about geometric shapes unless this is for a parametric design...

-Mark

* such as Inkscape, CorelDraw, etc - probably some online options out there too.

 

[chris_goris]

Like this?

 

[Wiley's Woodworks]

Thank you for the offer but I am going to politely decline. If I don't try to learn I never will, and what I love about woodworking is the learning process.

Peter--I think you're overthinking this. Keep-It-Super-Simple. Go to the Sierra Net Designs graphic, pick the size and shape you want, lay out a rectangle the length and width you want on a piece of cardboard, and freehand + template the curves.

One important piece of advice: Make your laminated frame long enough to extend all the way down the handle, unless it's a long handled net intended for boat use. Attaching the frame only to the top of the handle is a weak design and won't stand up over time. One day it will just break right there at the shoulders. The form you show us will have to be modified to hold more clamps around a handle buck (not a template).

P. S.--go to this link. Trout Landing Net It will be quite helpful.

 

[bowman]

Here's another thread that discussed trout nets.

Trout Landing Net

Gonna try my hand at making a trout landing net similar to this one. What glue would you use for the laminated strips? I've seen videos where they used Gorilla polyurethane glue or Titebond III. What is everyone's opinion? TIA.

ncwoodworker.net

 

[JohnnyR]

I thought CNC's were supposed to make things simple? Why not just draw it out freehand or trace one and go to the bandsaw etc.? Could've been done by now. I'm probably missing something so I apologize if I sound a little snarky.

 

[Echd]

I thought CNC's were supposed to make things simple? Why not just draw it out freehand or trace one and go to the bandsaw etc.? Could've been done by now. I'm probably missing something so I apologize if I sound a little snarky.

In reading the thread, it isn't a complicated request at all and different posters have presented numerous ways to resolve the request. The OP is trying to learn by doing, which is why he turned down the offers of others to do the work for him, and you start on small fundamentals before making complicated designs.

 

[chris_goris]

I thought CNC's were supposed to make things simple? Why not just draw it out freehand or trace one and go to the bandsaw etc.? Could've been done by now. I'm probably missing something so I apologize if I sound a little snarky.

A CNC is only another tool in the toolbox. Its a router, thats all. It doesnt make anything simpler, it just makes things better. Could you cut one out with a bandsaw or jigsaw or hacksaw? Sure. But the CNC cut one ( in the hands of a good programmer/operator) will be much better (smoother, more uniform etc) one time or 10,000 times, and all identical.

 

[Wiley's Woodworks]

A CNC is only another tool in the toolbox. Its a router, thats all. It doesnt make anything simpler, it just makes things better. Could you cut one out with a bandsaw or jigsaw or hacksaw? Sure. But the CNC cut one ( in the hands of a good programmer/operator) will be much better (smoother, more uniform etc) one time or 10,000 times, and all identical.

Chris is right in his facts: CNC will be smoother and more uniform and repeatable. Just add in the time to write the program for what looks like a one time project. Speaking of time, which is hourly billing for the labor, you'll spend more time hand lacing the net onto the hoop than you will making the buck by any method.

 

[mkepke]

I thought CNC's were supposed to make things simple? Why not just draw it out freehand or trace one and go to the bandsaw etc.? Could've been done by now. I'm probably missing something so I apologize if I sound a little snarky.

Hah! CNCs only make the 2nd or 3rd iteration easier. The first iteration is always a bit complicated.

You're right that freehand is the faster way to do this, but sounds like the OP Peter wants to use this as a CNC learning opportunity, so more power to him.

-Mark

 

[chris_goris]

Hah! CNCs only make the 2nd or 3rd iteration easier.

Only if you dont know what youre doing......