Gene- Sounds like your problem is mostly due to the crappy aluminum. I had that happen this weekend cutting an aluminum sign using customer supplied material. I did a dry run with a .07 2 flute in some 6061 alloy (which cuts without coolant just fine at ~20,000 rpm) and all was well. When I went to cut the job the bit loaded up immediately. So I ended up using an 1/8" bit cutting with a flood of WD-40 and settling for the larger radius in the corners. Gummy aluminum sucks. Have you considered using brass for your wheel? Nearly every hobby shop carries the K&S brass sheets. I believe it's all 360 brass which machines beautifully. Plus, it's very easy to blacken it.
>________________________________ > From: gene heskett <ghesk...@wdtv.com> >To: emc-users@lists.sourceforge.net >Sent: Monday, February 13, 2012 12:17 AM >Subject: Re: [Emc-users] Need advice on 1/16" end mill > >On Monday, February 13, 2012 01:12:11 AM charles green did opine: > >> some right angle dremel tool attachments have flat sides that can be >> clamped to other things. there are also air powered pencil die >> grinders that have been adapted as high rpm spindles. >> for cutting thin sheets, an exacto knife could be chucked up to use the >> spindle as the rotating element of a swivel knife arrangement. >> disengage any drive to spindle so it rotates freely, and plan the tool >> path so the knife point follows around like a shopping cart wheel. >> in certain cases, the axis movement motors are capable of providing the >> useful work energy without any help from a spindle motor. for example, >> a knurling wheel will work in a neutral spindle, letting the spindle >> rotate by the friction of the wheel rolling along the work surface. >> >> for cutting aluminum can material, a ball point pen run over the cut >> line many times against a hard backing surface will produce a breakable >> score. >> >This stuff is 0.037" thick, and is intended to be the slotted wheel used >with opto-interrupters to sense a lathes spindle position as it rotates. >Roland seems to know how to make the swivel knife work well in their >plotters & cutters, but I'd have no clue how to modify the gcode that >carves this in order to get the level of precision needed. > >Thanks Charles. > >Cheers, Gene >-- >"There are four boxes to be used in defense of liberty: >soap, ballot, jury, and ammo. Please use in that order." >-Ed Howdershelt (Author) >My web page: <http://coyoteden.dyndns-free.com:85/gene> >I saw Lassie. It took me four shows to figure out why the hairy kid never >spoke. I mean, he could roll over and all that, but did that deserve a >series? > >------------------------------------------------------------------------------ >Try before you buy = See our experts in action! >The most comprehensive online learning library for Microsoft developers >is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, >Metro Style Apps, more. Free future releases when you subscribe now! >http://p.sf.net/sfu/learndevnow-dev2 >_______________________________________________ >Emc-users mailing list >Emc-users@lists.sourceforge.net >https://lists.sourceforge.net/lists/listinfo/emc-users > > > ------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
