Been doing some Plexiglas signs and mostly use a tapered ball nose bit to etch the surface. I have seen some video's of people using a diamond drag bit.

Something along the lines of the Widgetworks Unlimited Diamond Drag Engraving Bit. It is 179.00 on their web site.

If anyone has any experience with this can you answer the following:

I have Camaster Signpro with ATC

1. How long do the bits last if I were to solely use them on plexi?
2. I believe they are spring loaded? Will this work with the ATC option of a Camaster?
3. 120 deg vs 90 deg bit: which do you prefer?
4. How deep do you set the z axis to apply enough pressure on the material?

I know there are cheaper diamond drag bits, throw away so to speak. Does the spring action and replaceable tips make this a smart choice?

Thanks