Spindle Speeds

[Lodds]

Usually if your smoking it's because your feeds are too low rather than spindle speeds being too high.

What size cutters are you using and in what material.? Give us some idea of the feeds n speeds your using.

Also, the machine makes a BIG difference because if your machine can't handle the loads or travel fast enough to cut correctly then you always going to struggle. This is why Feeds n speeds calculators don't often work for DIY machines as they assume an industrial spec machine is used.

Material is chipboard (just to practice on) RPM I have varied from 10,000 to 24000 (max) machine is a C-Beam from Open Builds

[JAZZCNC]

Material is chipboard (just to practice on) RPM I have varied from 10,000 to 24000 (max) machine is a C-Beam from Open Builds

Well, that's two details which don't help.!. . .But you didn't answer my questions regards speeds n feeds your using.

[Lodds]

Well, that's two details which don't help.!. . .But you didn't answer my questions regards speeds n feeds your using.

perhaps this will help

[Clive S]

How many flutes ??

That is way too slow. I don't know what machine you have but I would start by triple those speeds ie. 1800mm/min at 14000 rpm

Be prepared to break a few cutters.

[Kitwn]

How many flutes ??

That is way too slow. I don't know what machine you have but I would start by triple those speeds ie. 1800mm/min at 14000 rpm

Be prepared to break a few cutters.

I'm with Clive on this one. 3mm tools are cheap enough so keep the 1mm depth of cut (or maybe up it to 1.5mm, 50% of the tool diameter) and crank up the linear speed in steps until you break the tool. If you've been running at such low speeds up to now you will be pleasantly surprised at how fast you'll be able to cut even if your machine is not very rigid. I'd be fairly confident that you can cut at up to 3m/min (50mm/sec) in MDF with no problems. Just be aware that MDF dust is nasty stuff so a mask and dust extraction/vacuum cleaner are essential.



Kit