RE: [CAD_CAM_EDM_DRO] 3D Printing

I think the 3D printer guys all suffer from NIH (not invented here)
syndrome.

One 'problem' they have is Mach3 et al can't control the head temperature
(LinuxCNC apparently can), to which the obvious answer is 'why bother'? Get
a $15 PID off eBay or DX and be done with it. They'll send out an alarm for
under/over temp, use that to pause Mach3. Feedhold is fine.

The rest (XYZ) is standard CNC stuff, the extruder can be the A Axis, it
only runs one direction at a set speed so that's not rocket science.

Anyway, they all seem happy with their Arduinos and weird & wonderful
software.

I figure if I procrastinate long enough I can get one of these:
http://www.kickstarter.com/projects/b9creations/b9creator-a-high-resolution-
3d-printer (or
http://www.kickstarter.com/projects/formlabs/form-1-an-affordable-profession
al-3d-printer). 15mm per hour apparently, and since it's a projector the
speed shouldn't change regardless of what your printing. (And yes, they use
Arduinos too, but they're not exactly standard CNC machines.)

Tony

> Thanks. Great information.
>
> I'd use RS232 MODBUS to control the external electronics. I can use an

ELS to

> drive the motor, the electronic half nut input for the closed loop

temperature

> sensing and control. Or in fact use step/dir inputs and have MACH control

the

> extruder. All depends on what is available for software I guess.
>
> I was thinking it would be easier and faster to buy a head with a size 17

stepper

> motor on it. That stuff is all available for under $100.
>
> Cheers,
>
> John
>
>
>
> "ELS! The Solution"
> Automation Artisans Inc.
> http://www.autoartisans.com/ELS/
> Ph. 1 250 544 4950
>
>
> > -----Original Message-----
> > From: CAD_CAM_EDM_DRO@yahoogroups.com
> > [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Tony Smith
> > Sent: Monday, December 17, 2012 11:20 PM
> > To: CAD_CAM_EDM_DRO@yahoogroups.com
> > Subject: RE: [CAD_CAM_EDM_DRO] 3D Printing
> >
> >
> > > Any suggestions on which Yahoo groups to follow for 3D
> > plastic printing.
> > > I don't really want to build a reprap or buy a makerbot. More like
> > thinking of
> > > adding the head to my CNC JGRO type router.
> > >
> > > But I'm wondering what sort of rates these units need for
> > the X and Y
> > axis.
> > >
> > > Wondering if anyone has substituted their router with a
> > heated extrusion
> > head.
> >
> >
> > I've thought about it, never bothered getting organised though.
> >
> > There is/was a Yahoo group for exactly that, unfortunately I can't
> > remember the name. SeeMeCNC is one but the group I'm thinking of was
> > around earlier than that.
> >
> > This might interest you:
> > http://www.thingiverse.com/thing:5233, goes through the software which
> > was the hardest bit. It's not a complete solution as it requires some
> > manual code clean-up. Note their speed, 173mm which is about
> > 7 IPM. That's pretty slow for a router, the only thing slowing you
> > down is the speed of the print head.
> >
> > Slic3r does Mach3 these days, so have a look at that. You still need
> > an additional controller board to handle head temperatures and all
> > that. The heads themselves seem to be pretty much sorted these days.
> >
> > Tony
> >
> >
> >
> > ------------------------------------
> >
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>
> ------------------------------------
>
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> davemucha@... [Moderators] URL to this group:
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>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
> aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it

if you

> have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
> sister site to the CCED group, as many of the same members are there, for

OT

> subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING
> THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
> Yahoo! Groups Links
>
>
>