Question for RPM spindle to engrave the woods or acrylics ?

[Mongkol]

Hi Experters,
I need the help. I have spindle motor with vary 0- 12000 RPM and 750Watts.
I am not sure this range of RPM is enough to engrave the wood or acrylics or not. I see some popular spindle ,Example Air cool or water cool spindle has 0-24000 RPM. My spec. is suitable for engraving the woods or not

Pls advise me
Mongkol

[jm82792]

Sorry I misread your question and don't know the answer well enough... But from what I've seen many people engrave wood and cut acrylic with your spindles RPM range. However with wood from my experience you may have to back your feedrates down some depending on your endmill's cutting diameter.

[louieatienza]

For me, I cut acrylic at around 6000-7000rpm, so it should be good for that. at only 1HP at 12krpm, you might have some difficulties with some woods unless you take lighter cuts, but it can be done.

[Dennis Rech]

Hi Experters,
I need the help. I have spindle motor with vary 0- 12000 RPM and 750Watts.
I am not sure this range of RPM is enough to engrave the wood or acrylics or not. I see some popular spindle ,Example Air cool or water cool spindle has 0-24000 RPM. My spec. is suitable for engraving the woods or not

Pls advise me
Mongkol

Your spindle speeds are in the right ballpark. 8,000 to 12,000 is common.
Take a look at the router bits websites such as Onsrud's and download their feeds and speeds tables. RPM and feed rate will depend on the number of cutting edges on your router bit and the recommended chip load for that bit.
They will have a short formula for multiplying chip load x cutting edges x rpm to give feed rate.
Higher rpm require higher feed rates.
Too slow a feed rate and the chips will not carry the heat away from the material and burning will occur.
Hope this helps.