CNC Project - Guitar Neck (and the rest if I can get away with it)

[JAZZCNC]

Who sets the feed rate for the adaptive step over you or the software.? If it's you then your too slow I cut aluminium faster than that and with deeper DOC.

I've just cut motor mount pocket in 6082 aluminium with 8mm cutter at 11mm DOC with i-machining which is pretty much same as adaptive stepper over and feedrate was 2217mm/min with Max step over of 1.7mm and that was only on level 3 out of 8 so being nice and easy on machine. Even level 1 was 1335mm/min.?

In wood I'd expect to be cutting 3x that speed at least.!

[Washout]

Hi Dean

Yeah it was too slow - I think I said so at the end of the first toolpath.

My current workflow with adaptive is to spin up the feeds and speeds in GWizard and then transfer these to Fusion 360. I think what I forgot to do there was tick the HSM check box in GWizard, so it was slower than it should have been. I'll tweak it for the next body (I'm making two guitars, so have a second to do) and use a bit of blown air as my vacuum is a bit asthmatic currently (need a decent shop vac).

FYI - You can manually set a value for "optimal stepover", which is where Fusion tries to get to for the majority of each cutting pass, but ramps sideways into that stepover as part of the "curve". The "optimal" stepover unless you override it is set at 40% of the cutter diameter as a default value e.g. 3.2mm for an 8mm end mill.

Its maybe not as refined as i-Machining, as how aggressive is largely governed by what you get out of GWizard (or equivalent) and I haven't found a way of getting Fusion to optimise stepover or feeds based on a slider like i-machining has (wish it could though).

[Washout]

Just a quick video this morning (badly shot), of the adaptive toolpath on the guitar body being re-run using the HSM setting from GWizard (setting 2 of 4):



Settings were: 8mm 1Fl End Mill - 10mm DoC - 22,558 Spindle - 2,945 mm/min Feed Rate - 3.2mm Step-over (optimal)

The Feeds and Speeds are somewhat similar to Jazz's in the post above and ran very nicely, hence me grabbing the camera hastily. I think I could have gone for the setting higher and may do that at some point in a block of scrap.