I took a 2 flute 1 2 inch bit through acrylic and it came out looking magical.
Cnc best way to mill down a sheet of acrylic.
When we cut acrylic sheet with paper masking you can actually see grooves in the cutter where it s cutting through the masking.
I use a straight bit because i find the finish to be better in cutting acrylic.
What kind of acrylic is better for cnc machining typically acrylic blanks are manufactured using two methods.
I recommend getting the onsrud catalog honestly love their bits too personally.
Up spirals tend to lift the part and down spirals shove the material into the spoilboard.
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.
We recommend using a bit designed for acrylic cutting.
Acrylic thickness from using both methods usually varies from 1 5 to 25 mm.
We recommend using a bit that is specifically designed for cutting acrylic.
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.
Fast once set up.
Fast and easy to use.
We found that we get the best results using an o flute end mill.
Towards the bottom you will see charts for various types of material.
Holds down the entire part with even.
If you read online many posts will have you use the largest diameter end mill that you can.
You will never get the best results using wood bits to cut acrylic as cutting and chip removal is key.
Production parts larger than 10 square inches with a flat bottom surface.
Drilling threaded holes in acrylic using helix drilling and thread milling one strategy that we ve found to be effective for milling threaded holes in acrylic consists of a one two punch helix drilling first and thread milling second.
Can get in the way of cutter or dust shroud.
Of course i put a very thin spoil board under the work.
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.
I use them all but prefer the straight.
The first method is used to manufacture sheets while the other is used to manufacture sheets and any other kind of form.
Typically with acrylic the wider diameter the mill the glassier the finish.
