The nut, though felt, pretty hard. On Mon, Mar 21, 2022 at 9:22 AM Sam Sokolik <samco...@gmail.com> wrote:
> That was a generic ball screw from ebay with the ends machine. My > understanding is the shaft is only surface hardened and is pretty soft > underneath. (have not tried filing various areas of the ball screw though) > > On Mon, Mar 21, 2022 at 8:53 AM Leonardo Marsaglia <ldmarsag...@gmail.com> > wrote: > >> Sam, have you had to soften the final portion of the ballscrew to machine >> that thread? I've never done it and the ones I'm mounting in the router >> are >> fixed (rotating nut). >> >> El lun, 21 mar 2022 a las 10:15, Sam Sokolik (<samco...@gmail.com>) >> escribió: >> >> > Sorry - meant to post >> > https://photos.app.goo.gl/yBNmiD9rRkPCoNgJ8 >> > >> > On Mon, Mar 21, 2022 at 7:19 AM Sam Sokolik <samco...@gmail.com> wrote: >> > >> > > Dad ground the ball screw nut.. everything fits nicely under the >> cross >> > > slide it seems.. Found a bit of aluminium to make a simple bearing >> block >> > > for 2 angular contact bearings.. >> > > >> > > https://photos.app.goo.gl/NcW1fxrBGBgXH1SPA >> > > https://photos.app.goo.gl/jWwKR5Fvz9ae4bbR7 >> > > https://photos.app.goo.gl/jWwKR5Fvz9ae4bbR7 >> > > >> > > On Sun, Mar 20, 2022 at 5:56 PM gene heskett <ghesk...@shentel.net> >> > wrote: >> > > >> > >> On Sunday, 20 March 2022 18:07:01 EDT John Dammeyer wrote: >> > >> > Gene, >> > >> > The replacement ball bearing fan isn't on the bed fan duct but >> cools >> > >> > the top part of the hot end where the filament enters the PTFE >> lined >> > >> > feed pipe. >> > >> > >> > >> Ah, PTFE lined hot end. Needs tubing replaced as even at 200c nozzle >> > >> temps, the stuff eventually goes away or leaks badly. Feed it PETG at >> > >> 240C, goes away in 2 days. All metal hot ends are better, titainium >> heat >> > >> breaks even better. Better yet I suspect is the copperhead copper/ >> > >> titainium combo but like the PCD nozzle, bring real money. >> > >> >> > >> > Problem solved which the new blower duct, now not aimed at the hot >> > end, >> > >> > did not completely fix. >> > >> >> > >> should be aimed at or just below the nozzle tip. >> > >> > >> > >> > Wrapped hot end block in insulating paper and Krylon tape. Now >> nice >> > >> > flat curves and no drop in temperature even with 98% bed fan speed. >> > >> > >> > >> > John >> > >> > >> > >> > > -----Original Message----- >> > >> > > From: gene heskett [mailto:ghesk...@shentel.net] >> > >> > > Sent: March-20-22 2:50 PM >> > >> > > To: Enhanced Machine Controller (EMC) >> > >> > > Subject: Re: [Emc-users] Because I can't seem to finish >> anything... >> > >> > > Nebel lathe conversion.> >> > >> > > On Sunday, 20 March 2022 16:46:17 EDT John Dammeyer wrote: >> > >> > > > Story of my life. Fan failed on 3D printer. Repaired feed >> tube >> > >> > > > and >> > >> > > > replaced with ball bearing fan I had from power supply >> > >> > > > manufacturing >> > >> > > > inventory. Almost 1 week later still not working quite the >> way >> > it >> > >> > > > was and the way I want. John >> > >> > > >> > >> > > ball bearing fans start easier, leads to over cooling the early >> > >> > > layers. Change the min speed so its stopped for the 1st layer >> like >> > >> > > it used to be at 25% power. Sleeve bearing fans often don't >> start at >> > >> > > all till the mid 30% range. >> > >> > > >> > >> > > Try zero for the first layer or even as high as the third layer >> > >> > > before >> > >> > > the fan actually starts. I have a ball bearing fan on my BIQU BX >> and >> > >> > > it runs plenty fast enough at 30% of max in cura for PETG which >> > >> > > needs far less cooling than PLA. I don't mess with PLA at all, >> too >> > >> > > brittle. >> > >> > > >> > >> > > I've also put a diamonback .4mm PCD nozzle in mine so I can use >> the >> > >> > > carbon fiber filled PETG but haven't yet seen the need for its >> > >> > > improved strength. I'm running the nozzle at 252C and the bed at >> 90C >> > >> > > and my printed air manifold is air tight. Bed adhesion is only a >> > >> > > problem getting stuff loose. Its almost too good. If the nozzle >> is >> > >> > > slobbering, check how tight it is, then reduce the flow 2% at a >> time >> > >> > > to stop the overflow, this PCD nozzle conducts heat into the >> > >> > > filament better than brass, melting it better which can increase >> the >> > >> > > flow. At 245C the part will not be airtight if you need that. At >> > >> > > 252C the part gets noticably glossier because its more liquid and >> > >> > > bonds well to the next layer down before it cools and solidify's. >> > >> > > >> > >> > > Take care and stay well John. And my teeny version to be used as >> the >> > >> > > B >> > >> > > axis driver on my 6040 mill, the one that costs around a tenner >> to >> > >> > > make, seems to be pretty solid, got several hundred hours on it >> now >> > >> > > but it probably going to get another 200 running a hard maple >> stick >> > >> > > for a woodworkers leg vise screw. I've got to make an idler yet >> to >> > >> > > tighten the belt as that is the only backlash it it. >> > >> > > >> > >> > > 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, 1940) >> > >> > > If we desire respect for the law, we must first make the law >> > >> > > respectable.> >> > >> > > - Louis D. Brandeis >> > >> > > >> > >> > > _______________________________________________ >> > >> > > 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, 1940) >> > >> If we desire respect for the law, we must first make the law >> > respectable. >> > >> - Louis D. Brandeis >> > >> >> > >> >> > >> >> > >> >> > >> >> > >> _______________________________________________ >> > >> Emc-users mailing list >> > >> Emc-users@lists.sourceforge.net >> > >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > >> >> > > >> > >> > _______________________________________________ >> > Emc-users mailing list >> > Emc-users@lists.sourceforge.net >> > https://lists.sourceforge.net/lists/listinfo/emc-users >> > >> >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
