Cutting Strategies

[Holy1]

Hello everyone,  

I am new fairly new to cam. I have a CNC Router (home-built) and will be using 1/4" bits.  I am looking what  would be the best way to cut this model out.  The stock is pine at  x @ 400mm,  y@ 240mm and z@32mm. 

Any opinions? 

[LibertyMachine]

Did you know you can share the actual Fusion file?

File > Export > Save to local folder. Return to thread and attach the .f3d file

What is the spindle rating and max feedrate of your machine? This changes our answer greatly

[Holy1]

I am using a max feed rate of 500mm/min.  The router is a dewalt 611 and I think the slowest speed is 16000 rpm.  I should know what the speed is.   

[LibertyMachine]

Material? Stock size? Unlimited tooling selections?

[Holy1]

>>>Material? Stock size? Unlimited tooling selections?     .  That was in my first post. 

[LibertyMachine]

Ah, so it was. 

Do you have any means of tipping the part up at an angle to machine that odd contour?

[Holy1]

I do not.  The machine just has a basic spoiler board base.   

[LibertyMachine]

What sort of fillet in the corner and incomplete cleanup are you willing to
live with? That feature is not going to be completely reached in a 3 axis
approach..
A 1/4" ball endmill CAN scallop or Morph Spiral out a good portion of the
pocket, but you are going to end up with a large fillet in the bottom.
Acceptable?

What's the Z travel on your machine? It might be possible to machine a
wedge to bolt this part to so you can do that pocket properly

[Holy1]

A large fillet in the bottom would be acceptable.   I don't see a way around it accept what you propose and it is not that important to have the inside corners squared.  I have a Z height clearance of  of 65mm.

[LibertyMachine]

I would suggest using a 3D Adaptive to clear out the bulk of the material (using a flat or bull endmill). After that, a Scallop toolpath with a .250 ball endmill will do the trick for inside the pocket, as well as that large fillet all around the part