topic Re: compound mitre in Fusion Design, Validate & Document Forum

compound mitre

letterle — Tue, 12 Jul 2016 22:54:14 GMT

Hello everyone,

I'm starting to feel very stupid here........

how can something so simple as a parametric compound miter become such an operation. I've drawn these manually in AutoCAD and multiple other applications. But this has cost me more than a day and I'm no closer to a solution. I'm missing something regarding the basic modelling logic or workflow and i can't figure out what it is. Any ideas???

Two parameters drive the model (a horizontal- and a vertical angle) I'm not able to match up the the front edge.

Next step would be to make the two pieces match up a-symmetric and driving it from (two vertical angels, one horizontal angel) In this the height of one piece would be a variable and the other one a parameter.

Help is much appreciated here.

http://a360.co/29HgKbN

Best,

Roy

Re: compound mitre

carl_bass — Wed, 13 Jul 2016 06:56:59 GMT

I suspect there are other (and maybe easier) ways to do this but one geometric construction of a compound miter can be done as shown in the screencast http://autode.sk/29uXBLl

Re: compound mitre

masa.minohara — Wed, 13 Jul 2016 10:01:02 GMT

Hi Roy,

Thank you for posting this! I made a screencast that shows another way by using the Split Body command in your original design. I hope this helps!

Re: compound mitre

daniel_lyall — Wed, 13 Jul 2016 10:55:17 GMT

@masa.minohara I would go with the boss's way but with using RULE 1 less chance of it breaking, or having to re press pull. good idea tho. also you can re mirror it over and over again and copy past.

RULE 1 would make it better that's the only mistake

Re: compound mitre

letterle — Wed, 13 Jul 2016 20:37:21 GMT

The solutions are very elegant. Thanks for the help its much appreciated!!!

The second part of my question is still open though.... Because i'm constantly running into roadblocks either by my own faulty logic or by bugs.

Quote:

I'm missing something regarding the basic modelling logic or workflow and i can't figure out what it is. Any ideas???

To give you an idea of our intended use for Fusion360. I've trying to parametric model these three projects.

A http://miekemeijer.com/#/werken/ - http://a360.co/29DQfGA ( structure based on variable number of rows and columns)

B http://miekemeijer.com/#/airframe-01/ - http://a360.co/29DvRlE (horizontal rib with variable hole length depending on size and numer of holes )

C http://miekemeijer.com/#/space-frames/ - http://a360.co/29tyFQy (Arc structure based on variable number of sections and angle ) Work in progress

Suggestions are welcome

Best

Roy Letterle

Re: compound mitre

daniel_lyall — Wed, 13 Jul 2016 22:11:44 GMT

@letterle what you wont is to use patterns to do it, the first two you only need to draw 1 upright, 1 cross member and the base, and use a pattern feature they are quite simple, the math for the spacing for the upright on the first one will be the same for the cross members cutout for where the uprights go.

I will do a quick screen cast, if you look on my youtube channel I cover most of what you need to do.

Re: compound mitre

daniel_lyall — Wed, 13 Jul 2016 23:46:38 GMT

here is a screen cast for the werken it's a bit long.

all it is, is the first part of the design what is all in different components (RULE 1) all you need to do is pattern feature the whole thing up minus the 2 sort bits, there are a couple of adjustments needed you just activate the component and change what is needed in the sketch.

it's a free flow screen cast no editing has been done so there are mistake what I go back and fix.

Re: compound mitre

letterle — Mon, 18 Jul 2016 19:38:17 GMT

TNX for all your input. It is truly much appreciated. I think Fusion is a very elegant piece of software. My problem is mostly that I'm not used to the component based workflow. It requires a bit of a rethink when it comes to some of the basics. I don't have a background in Solidworks or Inventor. I'm used to AutoCAD, Revit, Rhino, Vectorworks, Sketchup ect where the software is more forgiving when it comes to small mistakes.

Again TNX