I'm building a similar style machine for plasma cutting and properly designed will have very small backlash. For that much Z I would use linear bearings. I had to machine all the connectors and motor mounts myself so I can't help you with off the shelf parts. I used FrameWorld extruded parts with their slides on X and Y with liner bearings for the Z
I have a couple of pictures here and will add some more this weekend. http://suburb.semo.net/jthornton/PlasmaBuild.html You can see the endblock details. I used toothed belts on the X & Y axis. Testing of the X axis shows a backlash of <0.001" using this method. I would use a much heavier belt for anything with side loads like engraving... John On 4 Jan 2008 at 5:46, [EMAIL PROTECTED] wrote: > I am building machine light gantry type. I want to ask help if anyone > know manufactures or source of parts for machines that I describe > below. This will be engraving machine. Machine will use hand hold > grinder from wall mart. Load on machine is that hand hold grinder. > Static load max 10 pound. Dynamic load about 20 pound. Machine will be > gantry type. X axis travel 36 inch. Y axis travel 36 inch. Z axis > travel 12-10 inch. > > I can see similar assembly on web http://nookindustries.com/ first > photo on top gantry machine XX -YY and Z axis. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
