On Thursday 11 February 2021 07:17:20 andy pugh wrote: > On Thu, 11 Feb 2021 at 03:20, Bari <[email protected]> wrote: > > https://dspace.mit.edu/bitstream/handle/1721.1/29225/50140264-MIT.pd > >f > > One of the better PhD theses I have read. (Not that I have read all of > it) > > It is interesting to think back to what the state-of-the-art was in > 2001. I think that I was still using 2.5D AutoCAD Mechanical Desktop.
Makes me wonder if thats how toy was able to turn a block of alu into a v8 engine block in about 4 hours as we saw in the since scrubbed from u-tube video quite a few years ago. That machine was at least 6 axis with a fully articulated head. Engine blocks only leased to TRO folks we were told, issued as sealed engines you were not even authorized to change spark plugs in. With the patent now expired, I would be tempted to donate to the FreeCAD folks if I knew they were working on it. It would be a huge feather in our LinuxCNC hat if some sort of a co-operative arrangement that resulted in compatible preprocess code we could use. That, and affordable machines. Like a gantry mill with a swinging to the side head, suspended between gantry arms to swing the whole head fore and aft. But you won't buy that for 10 grand, enough rigidity to pull that off will cost a lot more. That lack of rigidity is a problem with my 6040 as there are certain places in cutting a circle out that can't be done without visible chatter in the finish. It works pretty accuratly as long as the depth of cut in alu is .25mm or less per pass. But thats 10% of the DOC its capable of if it were rigid enough. 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
