Wed CNC checkin/todo

[Derek Eggers]

I hope to be at the space this Wednesday to checkin on the CNC machine.  I'd like to make a punch-list of things we need to do in the future.  Here is a start as I remember, please add to it, and mark your name if you're able to help:

- put brushes on the dust collection bracket

- build and install cable management bits

- build and install dust collection hose management bits

- secure the z-axis (things that came apart prior to the art/demo)

- disassemble, paint the base, reassemble

- mill/face the surface of the spoil board parallel with x-y

- what else?

-Derek

--
Derek Eggers

[David Hempy]

That's a great list, but it's not engraved in stone.  Maybe MDF, but not stone.

- mount t-tracks in spoilboard.
- emergency stop buttons
- limit/homing switches

[Derek Eggers]

Thanks for the additions dave. I didn't make it Wed.  Hope to this weekend sometime.  Anyone else going to the space?

--
You received this message because you are subscribed to the Google Groups "Collexion-CNC" group.
To post to this group, send email to collex...@googlegroups.com.
To unsubscribe from this group, send email to collexion-cn...@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/collexion-cnc?hl=en.

--
Derek Eggers

[Nicholas Warner]

Ainsley and I are planning to hack out some simple pieces on the cnc Saturday afternoon!

[Derek Eggers]

cool!  Hi to Ainsley from me. I may see you guys.

[David Hempy]

I'm thinking of going down Sunday to tinker. Hopefully swap out for the 1/8" collet and start cutting the e-chain. Would love some company...

-dave

[Derek Eggers]

Sounds good. I could go there Sun. Feel free to text or call when you know when.

Derek Eggers,
(859)312-8789

On Nov 2, 2012, at 9:21 PM, David Hempy <scoo...@gmail.com> wrote:

> I'm thinking of going down Sunday to tinker. Hopefully swap out for the 1/8" collet and start cutting the e-chain. Would love some company...
>
> -dave
>

> --
> You received this message because you are subscribed to the Google Groups "Collexion-CNC" group.

> To view this discussion on the web visit https://groups.google.com/d/msg/collexion-cnc/-/qnu9NQOoeD8J.

[Scootlex]

Will do. Probably late morning. I'll postt here, too.
Dave

Sent from far, far away.

[David Hempy]

Headed over now, with errand en route. Be there within an hour.

[David Hempy]

Had a good day with Derek and Chris Sunday.  Made some ugly parts and learned some interesting things. I now have first-hand appreciation for Ron's advice about not bothering to fine-tune the machine to 0.001" until we get the slop out. 

I was cutting e-chain with a 1/8" bit. There are some 1/8" channels cut in the design for tabs and slots.  I found in practical use that we have about 1/8" of slop, meaning two slots might be aligned, off-center, or completely divorced from each other, depending on the mood of the machine!  ARgh!

So we need to shake down the mechanicals.  I have a suspicion the bulk of the play is in the z-axis rails.  I'll bring a dial indicator next time to confirm that next time. 

I tightened up the z-slide eccentric bearings as much as they would go...which is NOT very much.  I'd guess they have an adjustment range of maybe 0.050" (~ 1/16").  This was not adequate to tighten it up. 

If I'm really on the ball, I'll cut new rails before I come down next time. The first time, I profiled the edge of the angle iron to mate with the v-bearings.  Folks on Joe's forum says it's not necessary...but when you have a mill, everything looks like a nail. Anyway, I'll leave the next set as-is.

Derek fashioned a box around the router as a prototype dust shield.  Hard to quantify, but it contained the majority of dust and vacuum, allowing the dust collector to do its job.  It caught maybe 80% of the dust, compared to 25% before?  It is a rough proto, to be followed up with something more substantial. Alternately, we could just buy a professional dust shoe for $140 from http://www.kentcnc.net/nc/products/94-standard-dust-shoe.aspx , something like this: http://www.youtube.com/watch?v=KwJtPmGrg-E  Opinions?

As it is, the machine is fine for large-scale, low-precision work: signs, adjustable parts, etc. Especially in soft media, like foam.

Well, off to bed now...

-dave