3d curve CAM set up for CNC router

[cguigand7QYN7]

Hi all!

Happy New Year. I am trying to machine a half wing profile with a CNC router. I am not sure which function and router bits to use. I am trying to cut it out of 1" thick HDPE board. I have plastics routers bits flat end 1/4" and round end 1/4".

I imagine I need a first a rough 3D clearing to remove large chunks of materials but I am not so sure about the step to get a smooth curve finish?

Thank you for your attention

Cheers,

Cedric

[seth.madore]

That looks like a perfect fit for Parallel, imo.

Could you share your Fusion file?
File > Export > Save to local folder, return to thread and attach the .f3d file in your reply

[PatrickPowers-CGS]

Don't know your width of your part or the quantities you're trying to run. I've got lots of experience running plastics on CNC routers.   I would turn that on it's side and cut that curve as a 2D contour. Save you so much time rather than trying to do it with 3D paths.  Double side tape your HDPE to your table if you don' t have a vacuum  table.  Do not cut all the way through. Leave .010-.015" material at the bottom to keep from breaking vacuum or running through your tape. Tabs can help keep the extra material flopping around causing chattered finish. I recommend triangular tabs and shoot for no more than .025-.030" tab height.  Knife through the thin material holding it all together after it's off the machine and flush route off the extra.