Tool comp in slot

[bnfshop]

Hello, My name is Tim and I'm new to trying a forum, so please bear with my ignorance on how to do things. 

I am trying to machine a .150" wide slot with a .125" end mill. I have to use compensation because the tolerance is fairly tight at +-.001"  I cannot get a toolpath with 2d contour, and have run out of ideas. I believe I attached the file here, but again really have no idea if I'm doing it correctly. Thanks in advance for the help!

[engineguy]

@bnfshop 

The 2D Contour with a Ramping cutting toolpath may be easiest for you, Slot is not best for what you are trying to do, see image below and attached modified file, go through the settings for some ideas on what is done 🙂 🙂

Hopefully it will be of some help to you 🙂

[bnfshop]

Thank you engineguy for the help. The slot was just to clear it out before sizing it. I don't understand why it works the way you have showed me, and not just plunging? There is plenty of room to turn comp on, and that is why I am so lost using Fusion. It seems everything I have used for many years of g-code programming is wrong, and I just have to find new ways to "lie" to the computer?

[engineguy · Accepted solution]

@bnfshop 

No, you don`t have to "lie" to the computer, it is down to selection of Lead in/out settings, see attached new file with a plunge entry into the already machined slot and with the "wear" comp enabled 🙂

The example I gave you was to show that by far the easiest way would be to only do a single operation, a ramping contour does the whole operation in one go.

Lots of ways to do things, each to their own as the saying goes, I just though that the simplest, fastest way was the ramping contour that`s all, Fusion has many (To some too many) options for getting things done, steep learning curve that`s all 🙂 🙂

[programming2C78B]

3rd tab "compensation wear allowance" and 4th tablead-in/out must all be below .012 in your case. There has to be room for the tool to move without gouging. 

[bnfshop]

Thanks for the help and suggestions. engineguy you definitely gave me a direction. I copied the toolpath and used it in a very similar part, but it wouldn't work! I tried many times with the main outcome being "gouges on lead out" A coworker said "did you try conventional instead of climb milling"? That won't work, it still has the same room and tool diameter. IT WORKED! so now I'm even more confused.