Which bit to level work surface?

[Gamble]

Was looking at some fly cutters, but they all appear to be angled. Not sure how that would work exactly since i haven't used one. But leveling it out with a .250bit will take forever.

Any good bits or ideas? Also doesn't help that the aluminum I cut always has a slight bow to it too be a few thou so I need the wasteboard to be as flat as possible

[hatallica]

Ideas:
http://www.shapeoko.com/wiki/index.php/ ... Fly_Cutter

I am no expert, but I understand that this is to have singular and wide cutting surface. Reference:
http://www.cnccookbook.com/CCFlyCutter.html

[Bonch]

This is the one I use

https://www.amazon.com/gp/aw/d/B000P4O9 ... UTF8&psc=1

[Gamble]

This is the one I use

https://www.amazon.com/gp/aw/d/B000P4O9 ... UTF8&psc=1

I like this. How long did it take to level the entire work area? Any issues after that? My main issue is that it never cuts deep enough because I know it's not level.
I have a piece of 1/2" wood on top of my oem wasteboard so I don't ruin it.
Generally what I do then is take my aluminum and drill 4 holes and drill them into that board so it doesn't move.

Is that a bad idea?

[Bonch]

Mine is the XXL and it took 15-20 min if I remember right.

[WillAdams]

Drilling into a spoil board for workholding is fine if you don’t mind replacing it,

[Gamble]

Mine is the XXL and it took 15-20 min if I remember right.

did you jog the machine or just write some g code to do it?
I'm trying to figure out the best way to do the gcode. maybe just a large box and cut .040 deep?

[Bonch]

Just a box with a pocketing toolpath and you probably only need to go .02 depending on how unlevel your board is.

[Gamble]

Mine is the XXL and it took 15-20 min if I remember right.

Thanks, got this bit off ebay for $20

[Bonch]

Awesome. I just had to level a board that I glued up that ended up too wide to go through my planer. I used that bit to level both sides of the board. It ended up being perfectly straight on both sides. So dont just limit it to the spoilboard. If you need to level something it works great for that purpose also.