Roland, in your view do you see EMC being a CAM software? It actually isn't. Also you don't necessarily produce better parts using a 2.5D mill, remember a 3D printer is a Milling machine, the only thing different being the spindle is now a deposition head of some form. Really you will only get the accuracy you program for, remember you can rough out a part. And what does a person do with the printed part you ask? Well many companies use them to construct conceptual parts, this is called a prototype. hobbyists use the printer to replace broken plastic parts, or to make enclosures, maybe even just design a prototype for themselves. You are also one of the few people I hear complain about the resolution, last i checked .1 mm is pretty darn fine, I bet you can't carve to that detail. Roland, unless you have used a 3D printer that extrudes plastic or metal, you really shouldn't knock it.
> From: roland.jolli...@gmail.com > Date: Wed, 30 May 2012 19:29:07 +0200 > To: emc-users@lists.sourceforge.net > Subject: [Emc-users] OT: 3D Printer Mods? > > On 30 May 2012 19:06, Joseph Chiu <joec...@joechiu.com> wrote: > > > Having a ToM 3D printer, and having done hobbyist CNC work with a > > 3-axis mill, I have to say that FDM 3D printing lets me try out a > > number of ideas that are much harder or impossible to cut with a > > 3-axis CNC. The most obvious examples are cutting "figurines", where > > there are features that would not be reachable by a cutter constrained > > to a single axis. The other "advantage" is the ability to make pieces > > that are "hollowed out" (done in FDM process to minimize material > > usage) -- which has a nice side effect of making things lighter (by > > adjusting the "fill" rate, you can determine how much material > > rigidity you give up). > > > > With newer printers able to get .1 mm or smaller layer heights, the > > surface quality issues are much less objectionable, too. > > > > Obviously, for "2.5D" work, milling parts out of sheets yield a much > > nicer result. > > > > Finally, the one last nicety of 3D printers is that you normally don't > > have to setup your job as you do with machining processes. You just > > "print" onto an empty print bed, and come back to a finished part. > > > > > The thing is, what do you do with these parts? While I fully appreciate the > value of the learning, especially for children, people using EMC are > perforce versed in CNC milling. > > Also, filament printing is not to confused with the valuable printing of > sinterable metals or other resinoid methods. I'm talking specifically about > the filament stuff. True, it looks something like the cad drawing, but then > what? Maybe for me, the penny hasn't dropped yet. > > Regards > Roland > > > > > > > > On Wed, May 30, 2012 at 12:51 AM, Roland Jollivet > > <roland.jolli...@gmail.com> wrote: > > > Hi Alex > > > > > > Do you mind saying what you are printing, and if you feel the printing > > is a > > > worthwhile exercise? I've been looking at different printers for months, > > > but they only seem to be able to produce junk. Cnc'ing it out of a block > > of > > > plastic looks far more effective. > > > > > > Regards > > > Roland > > > > > > > > > On 29 May 2012 18:22, Alex Hunt <al...@ieee.org> wrote: > > > > > >> Hi Jeshua, > > >> > > >> I mounted a "Wade" type extruder to my gantry router and have been 3D > > >> printing with LinuxCNC for about 6 months now. The extruder thermal > > >> control is managed by RepRap firmware on an Arduino. I have to manually > > >> set the temperature of the extruder before printing, but it works. I > > have > > >> a Mesa 5i20 card for control with 2M542 motor drivers, but the extruder > > >> driver is a simple single chip stepper driver. > > >> > > >> My intent was to close the thermal loop with a thermocouple to PWM > > circuit, > > >> but I'm not there yet. Sending serial port commands from LinuxCNC would > > >> automate my current setup better, so please let me know if you make any > > >> progress on that. > > >> > > >> When you get your hardware ready to go, I might be able to help you > > smooth > > >> over some of the speed-bumps getting started. > > >> > > >> Regards, > > >> Alex Hunt > > >> > > >> On Tue, May 29, 2012 at 12:00 AM, Jeshua Lacock <jes...@3dtopo.com> > > wrote: > > >> > > >> > > > >> > Greetings all, > > >> > > > >> > I have been dreaming of making a removable plastic extruder nozzle > > for my > > >> > machine. It would turn it into a *huge* 3D printer. > > >> > > > >> > So I read this page with great interest: > > >> > > > >> > http://www.thingiverse.com/thing:5233 > > >> > > > >> > Is it possible to make those changes to LinuxCNC? In other words, can > > >> > LinuxCNC currently command a serial port using those additional M > > words? > > >> > > > >> > If not, I would be willing to write some code and commit it. Some > > advice > > >> > to help me get started would be extremely helpful as I have never > > looked > > >> at > > >> > the branch. > > >> > > > >> > > > >> > Thanks, > > >> > > > > > > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. 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