Maybe the reason it's uncommon is that junk (swarf, dust, whatever) will collect in the groove?
On 9 May 2013 19:08, Gregg Eshelman <[email protected]> wrote: > I'm looking for rollers, wheels or bearings with a pointed edge to run in > a slot, but all I find are V groove wheels made to run along a pointed edge > rail. > > I'm building a XY gantry from 4040 extrusion and some delrin or urethane > wheels that can use the slots in the extrusion would be perfect for this > design. > > It will be low stress because the gantry will just be guiding a self > supported 2 joint arm in a 2D plane. Yup, that pattern follower torch I've > posted about before. > > Surprising to me that these things haven't been CNC retrofitted many times > already. Got a computer for free, $74 for three 9 foot pieces of surplus > 4040 and a bunch of t-nuts, bolts and brackets. There are plates on the arm > support post where the pattern holder arms mount, those plates will be > ideal for mounting the gantry frame. > > > ------------------------------------------------------------------------------ > Learn Graph Databases - Download FREE O'Reilly Book > "Graph Databases" is the definitive new guide to graph databases and > their applications. This 200-page book is written by three acclaimed > leaders in the field. The early access version is available now. > Download your free book today! http://p.sf.net/sfu/neotech_d2d_may > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. This 200-page book is written by three acclaimed leaders in the field. The early access version is available now. Download your free book today! http://p.sf.net/sfu/neotech_d2d_may _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
