Newbie looking at 6040 (China CNC) for polypropylene 15mm sheet

Here is an overview of my fog-less system and in video description are mentioned all major details so you can DIY one. A properly made one, i mean. Hope that helps you.

https://www.youtube.com/watch?v=NVu4mCFCvmA

Any recommendations on bits for fillets?
Like a round over tool for routers.

Also looking for alternatives to something like the Haimer Universal 3D Sensor.

Was looking at Zeeflyboy's link to the TPA2 but need something soonish and cheaper :p

Does this look about right for this 3 flute roughing bit?
https://www.shop-apt.co.uk/economy-3...-diameter.html

https://s15.postimg.cc/9220ieq63/Capture.png

I have a feeling that 3000mm/s is too much. Gwizard is saying 1000mm/s.

1000/S ? Do you mean 1000mm/min

Doh

Of course :p


Also, not 100% on the 1mm and 2mm. Wanted the single flutes but having to wait. Might as well try these.

Really struggling with the feeds and speeds for this 3 flute roughing bit.

Works fine for a few seconds then starts to chatter.

Guessing it is also a cooling problem?
Got the mister blowing a lot of air on it, also tried with a bit of water but same problem.

I have gummed up the roughing bits on more than one occasion when milling ecocast plate... to the extent that I actually had to dissolve the aluminium to get it off the cutters. What feeds/speeds and DoC/step over have you been trying?

Like I said they are definitely far more sensitive to incorrect speeds and feeds than single or 2 flute, proper coolant/lubrication would widen your envelope significantly.

Quote:

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Originally Posted by Zeeflyboy

I have gummed up the roughing bits on more than one occasion when milling ecocast plate... to the extent that I actually had to dissolve the aluminium to get it off the cutters. What feeds/speeds and DoC/step over have you been trying?

Like I said they are definitely far more sensitive to incorrect speeds and feeds than single or 2 flute, proper coolant/lubrication would widen your envelope significantly.

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Tried 500 and 1000 mm/m at their recommendation of 13000 RPM.
Only tried 2mm DoC.
Not sure what to try next.

removed......

So it looks like heavy mist/flood works really well.

The finish quality is really good too.


Having some odd problem where the Gcode is saying helical down, but Mach3 isn't doing it. It is still running the rest of the code as it should be but ignores Z.