About accuracy of 3D printing head. for pattern shop - manufacturing pattern for cast iron pump - 12" and bigger pattern has tolerance +/- 0.1 yes it is for cast iron foundry. i know that for sure. this regular 3 axis mill will not do accurate 3D printing as a "Object " machine (accuracy +/- 0.001 ) but for cast iron pattern shop it does not needed. every new idea should be determine specific application are to make sense
///////////////////////////////////////////////// on the manufacturing market room for "Object" type machine but also for head that attached to regular 3 axis mill. ............................. Example - pattern shop that manufacture pattern for cast iron foundry - 10 inch - and up will be interesting for such inexpensive solution for their pattern needs. On Sun, Feb 2, 2014 at 5:45 PM, Gene Heskett <ghesk...@wdtv.com> wrote: > On Sunday 02 February 2014 20:19:04 a k did opine: > > > Hi > > i found that this and many other companies manufacture 3D printer > > http://indimension3.com/our-3d-printers > > They also manufacture head that attached to basically 3d CNC 3 axis > > mill. So, question is why not just manufacture head as a another tool > > to CNC mill on the CAT 40 or CAT 50 tool holder? > > in this case every 3 axis CNC mill can be at the same times 3D > > printer!!! With EMC2 possible to allocate up to 4 axis and 100 M code > > to control only head and use 3 axis to move head in 3D area by 2.5 axis > > motion/ ///////////// > > Also i think it will be large manufacturing business - make 3D printing > > head that work on regular CNC mill. > > > > thank you > > aram > > In theory it sounds great Aram, I even considered it myself. > > But the speed considerations involved in laying a consistent thickness of > material, are highly dependent on the speed and accels of a print head that > moves, and weighs perhaps a pound, often much less. Now, translate that > motion into the table of a conventional mill whose x table probably weighs > somewhere between 40 and 500 lbs. That level of instant turnaround > performance while laying a continuously flowing layer of plastic, while > also moving the y a large fraction of a bead diameter while the head, the x > axis, is turning around at the end of its stroke with perhaps 50 thousandth > of an inch to do all that while not building up a fence of too much > material at that turn around point because the plastic keeps on flowing > when the table is slowing to make the direction turnaround, simply is not > within the reach of even my toy mill whose extended x table is likely close > to 40 pounds. Now imagine trying to do that on an 12 x 54, $47,000 cnc > mill where its table weighs perhaps 500 lbs. Common sense says it can't be > done well enough to sell the product without finish rework. > > 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) > Genes Web page <http://geneslinuxbox.net:6309/gene> > > NOTICE: Will pay 100 USD for an HP-4815A defective but > complete probe assembly. > > > > ------------------------------------------------------------------------------ > Managing the Performance of Cloud-Based Applications > Take advantage of what the Cloud has to offer - Avoid Common Pitfalls. > Read the Whitepaper. > > http://pubads.g.doubleclick.net/gampad/clk?id=121051231&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Managing the Performance of Cloud-Based Applications Take advantage of what the Cloud has to offer - Avoid Common Pitfalls. Read the Whitepaper. http://pubads.g.doubleclick.net/gampad/clk?id=121051231&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
