Need durable V-bit for Formica

[tim_mcknight]

Looking for a durable V-bit to V-carve into Formica "type" faced sign boards. I am using Pergo type flooring for carving small signs. It really works well BUT the downside is I am only able to cut a couple small signs before the carbide V bits are toast. Any suggestions for longer bit life? I am not overheating them but the Formica type surface overlay seems to be really abrasive to the V-bits.

[bleeth]

The key is to remember that you are cutting hard plastic and so you can dull your bit by spinning to fast. Slow down your spindle to 8-10k. Possibly even slower if you are running at lower move speeds. Also ramp in when possible or at least slow down your plunge to .25/sec

[jerry_stanek]

Formica plastic isn't the issue it is the backer that the color is bonded to. It is the same material that brake shoes are made from.

[CNYDWW]

Sounds like you need to change materials. The cost of bits far outweighs the savings on material.

Regards
Randy

[curtiss]

Would a small end mill work or last longer ??

You can get them down to about .03 and even smaller. I usually cut end mill text in laminates about .02" deep.

If your material is not perfectly flat, with an end mill you will still get a consistent width to the lettering. Not so with a v bit.

[twelchPTM]

amana tools has a "miter-fold" bit. it is designed to cut through laminates and such but is only available at 91 degrees. Also Amana offers several different grades of carbide for the insert bits so you may be able to get A v-groove bit with the proper inserts.