Any methods to define distance along path of a curve or arc?

[Anonymous]

Already done a bunch of hunting with no luck here, so I come to you 😄

I need to define a 3 point arc as distance along path (radius/ distance) rather than radius/ angle. I can remove the angle constraint and add a point to point but obviously that is in a straight line and doesn't give the desired result. 

There are a lot of defined arcs in this project and I'm hoping there is a direct way to define these things that I am missing, though the search here and on the web doesn't look promising.

Any insights or workarounds appreciated!

[davebYYPCU]

Nothing in the sketch environment will help, been discussed here before (Distance on Path)

you can do the calculations, or use a workaround 

(Plane or) Work point on Path, select your curve, slide the point along it, and in the Dialogue Box, swap to Distance (from Proportional), set the point at your distance.  

Might help.... 

[HughesTooling]

A workaround is to used a parameter to calculate the the angle from the radius and required length.  (ArcLengh/ArcRad)*rad

[g-andresen]

Hi,

try this

günther

[Anonymous]

Thanks all! Yes, I've tried all the above- so far the best result from a combination of these. To be honest in this context it's a bit time consuming.  Hopefully with how many times I've seen this question come up here and across the web the dev team will find it worthwhile to add this in the near future. 

[Anonymous]

Yes, finding the length is not the issue- DEFINING IT- as a direct input, is the issue. Rather than a back and forth of calculating outside fusion, or changing the rad/angle & resulting distance along arc to get the dimension as supplied. It's a bit backwards to have to figure for a 10.345* arc angle to get 680mm across the face. Perhaps others see the usefulness of such a tweak and we see it in future updates 😄

[g-andresen]

Hi,

As long as there is no tool for stretched lengths, you need workarounds.
Besides, it is not only about arcs but also about splines, for example.
But I remember that such a tool is currently being worked on.

günther

[TheCADWhisperer]

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@Anonymous wrote:

.... and across the web the dev team will find it worthwhile to add this in the near future. 

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Perhaps the Fusion dev team will walk across the Autodesk hall and ask their Inventor teammates how it is done.  Their Inventor Professional teammates figured this out years ago.

[kurtweimer]

My dirty trick is to select the entire path, run a pipe, specify the distance, then I use the end of the pipe run as my reference point.