The only large mass that moves is the table and only in the Y direction. The extruder moves in the X direction but weighs nearly nothing. The Z direction moves about 0.2 mm every few minutes So if there is any movement it is near the base near the table. There is not much mass to shake the vertical beams
But the reason I bolted the printer to the workbench is to keep the alignment stable. Once getting the bed level, moving the printer would un-level it. The screws prevents me from moving the printer with my hands. If the workbench were a ground granite slab then I guess I would not care but it is wood and not close to flat. Guy wires would not help. What I cared about was the base warping and changing shape. You can not pick up a printer and move it and expect not to have to re-align it. So I bolted it down and now it is more stable and will keep alignment for days at a time. What happens is that a part gets stuck to the build plate and some force is needed to remove it. The force applied by my fingers (or a plastic mallet and plastic putty knife) and moves the printer. Yes I have to resort to the mallet frequently. It is the least-bad option. I'd rather need to pry the part off the table then to have it come loose half way though the print. But if you use any force you move the printer. Some people solve this differently. Long learning process and then you tend to stick with whatever works. On Fri, May 29, 2020 at 9:55 AM Gene Heskett <ghesk...@shentel.net> wrote: > On Friday 29 May 2020 12:20:39 Chris Albertson wrote: > > > The Ender printers are well thought out and lack most of the dumb > > problems of older Prusia clone printers. But still, there are cables > > that attach moving to non-moving parts and after flexing 20 times a > > minute for years will break. The printer is open source and there > > are forums if problems come up. > > > > The first thing most new 3D printer owners print are upgrades for > > their new printer. > > 1; Usually these are a filament guide to feed the > > filament over sharp edges and some braces to make the printer > > structure more rigid, > 2; link to fora or where ever this stuff can be downloaded as .stl files? > > housing for the electronics, cable clamps, and > > hold-down clamps so the printer can be screwed to a workbench. > > Does it shake rattle and roll that badly that it needs the mass of a well > built workbench to do _good_ work? Seems to me 4 guy wires with > turnbuckle tensioners, two from each end of the top frame rail should > brace it adequately. > > > The > > on-line groups advised me that my A6 printer had a problem were a > > small connector was used for a big current and would melt and catch > > fire. But they kept re-posting this long after the manufacturer > > fixed this problem. That is what happens with even this group. We > > re-post what we read years ago. > > > All of which serves to edycate the neucomer. Speeling mysteaks expected. > > > The printer is as complex as a CNC mill and takes a while before you > > can learn to use it. There is a long software workflow too from an > > idea in your head to finished parts and unlike a mill, there is no > > option to turn the handwheels manually. > > Thats probably my biggest concern as this will truly be the first time I > have trusted a code generator to do what I want. I have up till now, > either modified gcode to do what I want, or written it myself. > > Sometimes with a lot of help, you know who you are, and many thanks for > that. I owe many of you a hand cooler if we ever meet in person! > > > On Thu, May 28, 2020 at 11:56 PM Gregg Eshelman via Emc-users < > > > > emc-users@lists.sourceforge.net> wrote: > > > I've never noticed any smell from PLA filament. ABS would definitely > > > smell just like cutting ABS with high speed tools that melt it some. > > > The GRBL, Marlin and other 3D printer firmwares have the ability to > > > monitor things and shut everything down if a fire potential > > > situation happens. Some printers have had a bit of an issue where > > > the manufacturer chose to not enable those features, then after a > > > few incidents either the users or the manufacturer released updated > > > firmware with the features enabled. Google 3d printer fire to find > > > various ways some have lit up, and things to look for to ensure > > > yours won't. > > > Aside from the firmware issues, common causes of flammen tend to be > > > wires to the hot end or heated bed rubbing and wearing through > > > insulation, or parts for the bed mounting being sharp and cutting > > > into the circuitry. At least one case was the hot end heater fell > > > out of the nozzle block and the printer was one with runaway heat > > > monitoring disabled. Since the thermistor wasn't reading the heat, > > > the printer kept cranking up the juice to the heater. Basically an > > > if expected temp output != commanded temp input then something's > > > wrong so turn off. The one with the bed mounting issue was one of > > > those lower cost Prusa copies. The fix was simply four fiber > > > washers, before the metal washers cut through the insulation coating > > > on the underside of the bed plate. > > > You'll want to make sure the wires to the heated bed are secured so > > > they don't flex where they're soldered. PITA to discover that when > > > one breaks loose then you have to take things apart, and rig up > > > proper securing for the wires. > > > > > > On Thursday, May 28, 2020, 8:04:15 PM MDT, Gene Heskett < > > > ghesk...@shentel.net> wrote: > > > For Dee, whose COPD is getting close to the end, not tolerable then, > > > so I may as well put it in the shed and build a box around it. > > > > > > Does it need a fire extinguisher when doing lights out stuff at > > > 3AM?. > > > > > > Thanks Andy. > > > > > > Cheers, Gene Heskett > > > _______________________________________________ > > > Emc-users mailing list > > > Emc-users@lists.sourceforge.net > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > Cheers, Gene Heskett > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author) > If we desire respect for the law, we must first make the law respectable. > - Louis D. Brandeis > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
