On Sun, May 30, 2010 at 2:02 PM, Mark Wendt (Contractor) < [email protected]> wrote: > > >Sweet Mark, very sweet. But you're right, needed a tripod. Question: > What > >were those extrusions you used for framing supposed to be? (Says he, > licking > >his chops & thinking again of a stock carver) > > > >-- > >Cheers, Gene > > Gene, > > All the extrusions are from 8020. All cut to custom > length. You shoulda seen the 13' long package they arrived in. On > pallets and all. At a residence. On a 53' semi... ;-)
FYI, check out Misumi's extrusions. They seem to be significantly cheaper than 80/20. I've never used 80/20, but Misumi's stuff is outstanding. http://www.misumi-ec.com/usa/eusaen/CategorySearchView/103_29000000_29010000.html <http://www.misumi-ec.com/usa/eusaen/CategorySearchView/103_29000000_29010000.html>They offer a variety of extrusions in 20, 25, 30, 40 and 45mm squares, plus multiples (such as 20x40) of those sizes. For reference, their 20mm extrusions are only $4.70/meter. 20mm isn't strong enough for most parts of a cnc machine, but is plenty strong for may applications (seriously, it will support 300lbs in the middle of a 1 meter length supported at the ends with only a little deflection). Their 25mm is 7.90/meter compared with 1" 80/20 for ~$10.36/meter. The various nuts and fittings that are used for assembly have an even bigger price disparity. For economy pre-assembly nuts, $.14 each from Misumi (in a package of 100, all other prices are qty 1), $.29 from 80/20. $.45 for a post-assembly nut from Misumi, $2.25 for one from 80/20 (Pre-assembly slide in from the ends and often cannot be added or removed once the item is assembled. Post assembly slip into the slot directly, so can be added and removed at any time). Like 80/20, they cut to length and send you only what you need, accurate to within .5mm. The only minor issue I have with Misumi is that their website is pretty difficult to use. It is definitely worth getting their printed catalog. ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
