New start

[Nr1madman]

Alright, since you are all discussing :D

How about a v-bit 60degrees 2 flute.
What's a starting point in mdf and in oak?
The only suggestions I've found are for shapeoko type machines and I dont think they are all that accurate for me since they refer to dialnumbers on dewalt routers for speedsetting and something like 500mm feed (20 ipm)

I must be able to go faster? And DOC ? Is it even that relevant when engraving? :)

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[Davek0974]

5000rpm / 3000mm/min for a 10mm HSS V-bit in hard wood.
7000rpm / 4800mm/min for a 10mm carbide v-bit in hard wood.

Both are 2-flute tools, just estimates as it depends on how deep you go etc with an angled cutter.

DOC is always important, all factors are important - get them too wrong and it goodbye cutter :)

[Nr1madman]

5000rpm / 3000mm/min for a 10mm HSS V-bit in hard wood.
7000rpm / 4800mm/min for a 10mm carbide v-bit in hard wood.

Both are 2-flute tools, just estimates as it depends on how deep you go etc with an angled cutter.

DOC is always important, all factors are important - get them too wrong and it goodbye cutter :)

Well.. I expressed myself badly.. :)
What I ment was that I will engrave with max 5mm (mostly about 3mm) DOC so to my thinking it should work in one pass?

As the spindle is (as you put it) useless under 8000rpm I should be aiming for 5000mm/min? As starting point?
Haven't even tried jogging at those speeds yet :D
Still playing and calibrating but 4000mm/min went fine so I will give it a try next time I get a chance!
Thanks

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[Davek0974]

I would try at whatever setting you and your machine are comfortable with to start ;)

V-bit are awkward for feed/speed as the diameter is not fixed so the speed will only ever be correct for one part of the tool. Wood is very forgiving and people do this every day so we know it can work. If using router bits, they sometimes come with recommended settings on the pack and routers are generally high speed so these tools would suit the spindle well.

Its all a matter of breaking tools and learning - I shudder to recall how many new carbide bits i smashed when learning the settings, its a sharp lesson when you put a new £15 tool in and it only cuts 5mm before going in the bin :)

[Nr1madman]

I would try at whatever setting you and your machine are comfortable with to start ;)

V-bit are awkward for feed/speed as the diameter is not fixed so the speed will only ever be correct for one part of the tool. Wood is very forgiving and people do this every day so we know it can work. If using router bits, they sometimes come with recommended settings on the pack and routers are generally high speed so these tools would suit the spindle well.

Its all a matter of breaking tools and learning - I shudder to recall how many new carbide bits i smashed when learning the settings, its a sharp lesson when you put a new £15 tool in and it only cuts 5mm before going in the bin :)

Oooh.. sounds promising. With no local suppliers for new bits I might err on the cautious side ;)

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[Nr1madman]

Been playing some more :D

Look at this video, what might be causing this weird motion?
To fast motion for set kernel speed or just funky g code?
Have cut circles with constant speed so this was a first :)
https://m.youtube.com/watch?v=hlvP9uEJP8g

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[JAZZCNC]

Post the G-code

[Nr1madman]

Post the G-code

Alright, go easy on me as I have no clue what Im doing in cam :D

[Clive S]

Removed

[Nr1madman]

You have not posted your gcode you appear to have posted the ini file

I don't think so?
When I open it it's :
(No. 1: Part 1)
G00 X16.9301 Y32.4734
G00 Z0.5000
G01 Z0.0000 F600 S24000
G01 X17.0971 Y32.2580 Z-0.1363
G01 X17.5547 Y31.6925 Z-0.5000
G01 X17.0971 Y32.2580 Z-0.8637
G01 X16.9301 Y32.4734 Z-1.0000
G01 X17.0971 Y32.2580 F1200
G01 X18.3224 Y30.7439
G01 X18.3753 Y30.6802
G03 X165.3861 Y35.5432 I71.6236 J59.3169
G03 X168.5055 Y40.1417 I-73.9716 J53.5375
G01 X168.5497 Y40.2117
G01 X169.5325 Y41.7967
G01 X170.2938 Y43.0831
G01 X170.5245 Y43.4729
G01 X171.4812 Y45.1695
G01 X171.5210 Y45.2421

And so on..


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