Issue between feedrate and finishing feedrate

[Anonymous]

Hello,

When machining a 2D contour, I noticed that the feed rate was 3000mm/min while the tool used is set to feed at 5000mm/min.

The g-code is as follows:

The feedrated is correct at 5000mm/min but it goes immediately afterwards to 3000mm/min.

It seems to me that it is actually the finishing feedrate that takes priority over the tool feedrate.

Is this normal?

When finishing feedrate is set to same feedrate as the tool, I do not have this issue.

[fr33l0ad3r]

Default single pass "contour" counts as finishing pass – so that's normal.

You can look inside of toolpath raw data that will be posted: right click and click "Show toolpath"

[Anonymous]

Thanks for answer.

My machining was to slow and it burnt the  tool, i don't want to make same mistake again.

Is there a way to disable finish toolpath or go through finish feedrate ?

[fr33l0ad3r]

Just tried to make new part and added 1 end mill from my own lib and 1 from fusion examples. Both are going full speed on horizontal moves so I have no clue how you went with 3000 feedrate - maybe you can check it with newly created operation

[Anonymous]

I already check everything before my post, this is why I came here, I don't know why I get this.

I make another contour and I get the same result.

When machining "contour" Feedrate depending on Finish feedrate.

[fr33l0ad3r]

I am unable to reproduce this behavior unless by adding lower value manually

[Anonymous]

What happened when you set contour with a tool with feedrate faster than the finish feedrate ?

[fr33l0ad3r]

I get result same with yours but I added numbers manually as I said

[Anonymous]

Ok.

So we have to change finish feedrate manually if lower than "tool" feedrate?

Is this behaviour works like that from a recent update or from long time ago ?

[fr33l0ad3r]

2017 post

https://forums.autodesk.com/t5/fusion-360-manufacture/feedrate-help-understanding-needed/td-p/699830...

Also:
https://forums.autodesk.com/t5/fusion-360-manufacture/2d-countour-feed-rates-help/td-p/7279091

[Anonymous]

Thanks a lot,

cj.abraham says:

The finishing passes (a single pass in considered a finishing pass) are controlled by the finishing feedrate, which by default is set to be equal to the cutting feedrate and should update automatically. If it is not automatically updating, right click on the "finishing feedrate" text box and select "reset to built-in default."

I understand the way it work but that keep a bit tricky for me.

I need to updating with the right click, each time, if I forgot to do it (which can happen ;)), I will broke another tool.

It would be easier and less risky if the finish feedrate will automatically updating to the cut feedrate, as it should, according to cj.abraham.