[Noisebridge-discuss] CNC Shop Class

[Jonathan Foote]

I'll be by later this afternoon, I can likely sort out the spindle
issue, and hopefully get a handle on the limit switches and check the
X-axis.
I can also do a brain dump of what (little) I know, and hopefully I
can get a start on a PCB routing toolchain.




On Fri, Oct 9, 2009 at 3:34 PM, Michael Wright <mike at smallip.com> wrote:
> The Mill is operational in a safety 5th sort of way.  This means it will in
> fact cut patterns from g-code, at the moment it will only do that with the
> spindle running at full speed any time it's plugged in, though I'm planning
> to fix that first.
> I consider it safety 5th because it doesn't have travel limits like the
> manufacturer intended.  The manufacturer relied on software to keep the
> travel in range, we're not using their software and haven't sorted out how
> to make EMC2 do that (or a hardware solution).  In short we need to be
> watching it all the time, and only run things near the middle of it's ranges
> (so we have time to turn it off).
> If it appears to be getting out of hand, please is turn it's power switch
> off (the one on the side of the control box).  Note however that after doing
> this you'll probably need to restart the software because it will be out of
> sync with the controller (it gets out of sync).
> If it only looks like it might be getting out of hand, the F1 key should
> toggle Emergency Stop in the software (which at present won't stop the
> spindle).
> In terms of learning CNC, EMC2 has a really really nice simulator (well,
> actually it's a 3D representations of what it thinks the machine it's
> controlling is doing).  It runs reasonably well on VM-Ware (even on my
> little MSI Netbook).  If anyone wants a copy of the VM I use it's about 6.4
> GB (alternatively you can just download the .ISO and make your own.  It
> seems to run much better installed on the VM hard disk with 2 virtual cores
> than it did running diskless (from the .ISO file).  Currently it has 700 MB
> available and is using 360.
> Effectively this means anyone can sort out their G-Code file before ever
> touching the mill (or while someone else is running a different job on the
> mill).
> I'm defining "getting that g****d mill to work" as getting it to where EMC2
> accepts G-Code.  I think Jon has done some work on setting up a tool-chain
> and put links on the wiki.  It would be wonderful if someone sorted out a
> tool-chain and possibly set it up to run on something other than the Mill
> controller at NB.
>
> mike
> On Oct 8, 2009, at 6:43 PM, Shannon Lee wrote:
>
> I believe the shop class tomorrow will address this particular area of
> idiocy (I am hoping so).  Whether it will increase or decrease the general
> level of CNC Idiocy remains to be seen.
>
> On Thu, Oct 8, 2009 at 6:35 PM, Al Billings <albill at openbuddha.com> wrote:
>>
>> So I know nothing about CNC stuff but have seen all the traffic about
>> the mill. Will the shop class tomorrow night rectify my idiocy (at
>> least in this limited area)?
>>
>> Al
>>
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>
>
>
> --
> Shannon Lee
> (503) 539-3700
>
> "Any sufficiently analyzed magic is indistinguishable from science."
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