On Tue, 1 Feb 2011 16:54:53 -0500, you wrote:
>I have purchased another z casting for my micro-mill, with has a nominally >1 and 15/16" bore for the quill to travel in, and have been unable to >determine if its worth the effort and $140 for a Proxxon because even the >peddlers who advertise it cannot tell me if the chuck is rigidly attached >to the motor armature, or runs in its own bearings with some sort of a self >aligning coupling to the motor shaft. As all such tools sold on this side >of the pond seem to be. The other possibility might be a trim router, but >I haven't found one that is small yet although the Dewalt comes pretty >close. The rotozips, at least with their skin on, also look to be too >large. The Kress spindle is smaller than the Rotozip and pretty good. 240V only though as far as I know. >That leaves sawing off the end of the casting and fabricating a new mount. >an enticing thought IF I could find (or make) an emc controllable gimble >mount to allow something like the Proxxon to have the motions that Stuarts >new toy has. That sort of a capability would be better spent building >something like Marks machine because I would want to carve gunstocks with >it. With the gimbled Z axis, I could reach into the thumbholes and carve >those quite precisely. I got a couple of gimbal type mounts, gear driven that were to be modified and bolted together to allow 5 axis machining, never got round to it though. They were off ebay from the US and came out of some satellite dish rotator. They have 24V geared DC motors with encoders and brakes. One of these days I'll replace the gears with HTD belts to get rid of the backlash. Have a look at these http://www.doughtydrive.com/index.html Easy enough to make a similar design using htd belts and pulleys. Steve Blackmore -- ------------------------------------------------------------------------------ Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
