Fast once set up.
Cnc best way to mill down a sheet of acrylic.
Large pieces of flat stock securing other fixtures.
You will never get the best results using wood bits to cut acrylic as cutting and chip removal is key.
Acrylic thickness from using both methods usually varies from 1 5 to 25 mm.
I use them all but prefer the straight.
Production parts larger than 10 square inches with a flat bottom surface.
Our customers typically get the best results using o flute end mill bits.
I have used a magnetic chuck on our old tired manual bridgeport mill when cutting steel.
I recommend getting the onsrud catalog honestly love their bits too personally.
Of course i put a very thin spoil board under the work.
I have also used high strength magnets such as the magsquare 600 to hold thin sheets of aluminum galvanized steel and acrylic to the machine s cast iron table for cutting.
When we cut acrylic sheet with paper masking you can actually see grooves in the cutter where it s cutting through the masking.
What kind of acrylic is better for cnc machining typically acrylic blanks are manufactured using two methods.
Can get in the way of cutter or dust shroud.
I took a 2 flute 1 2 inch bit through acrylic and it came out looking magical.
Holds down the entire part with even.
We recommend using a bit designed for acrylic cutting.
Towards the bottom you will see charts for various types of material.
Up spirals tend to lift the part and down spirals shove the material into the spoilboard.
The first method is used to manufacture sheets while the other is used to manufacture sheets and any other kind of form.
As an example we recently helix drilled an acrylic part with a 2mm single flute end mill at 20 000 rpm and a feed rate of 10 inches per minute with 1 0mm z infeed.
Fast and easy to use.
We found that we get the best results using an o flute end mill.
While you can use bits of all sizes it s generally advisable to use the largest bit possible for your design as this increases depth possible stability and removal of waste material.
I use a straight bit because i find the finish to be better in cutting acrylic.
Typically with acrylic the wider diameter the mill the glassier the finish.