On Monday, January 16, 2012 10:32:12 PM BRIAN GLACKIN did opine: > Ouch. Plays heck with my SS check. How is the run out on those? I > have > > > measured above 20 thou if I just shove it in and tighten, and when > > dealing with solid carbide wood router bits I have been able to turn > > those in the collect and usually get it down around 5 thou. Still > > way too sloppy but it carves mortise and tenon joints in wood ok. > > Using similar mills from Hemly, not much can be gained to rotating > > them in the collet. > > Gene, > > I am primarily cutting MDF and plywood (2d) with a 1/8th carbide > endmill, so I am rarely worried about the runout. Plus I would need to > buy an indicator to figure it out. I have cut steel screw heads (by > accident) and I get a surprisingly smooth surface. Most of the time, > I am happy if I get the cut code right. My largest runs have been > christmas ornament blanks for the kids and cub scouts to paint. > You are working with a bigger gantry I assume?
> My biggest problem is with the collet slipping after my first cuts. I > need to make sure I always snug up the collet after the few minutes of > starting the router. I fight with that on this HF die grinder continuously when its in use. A .250" by 1.25" long 2 flute upcut spiral, TiN coated mill will walk out of that collet about 5 thou for every tenon I cut on the end of a poplar stick. I solved the tenon length problem by parking the head back at z=0.000, and run the stick up against the end of the bit, with all the sticks precut to the exact length + 2X tenon length. But I still need to reset the mill in the collet about every 10 sticks processed, 20 tenons IOW. That run was for about 48 sticks plus 5 or 6 spares in case I didn't like where that knot was. :) And that is when tightening that collet, with a film of never-sieze on the collets ramps, with a box end wrench about 9" long, to the proverbial 1/8th turn from stripped out tight. IMO that collet needs a full redesign to use sleeves with tapered ends and a cone in the shaft with a matching one on the nut. As is, the angle of the ramp used to tighten it against the bit shank is too high. Because the collet is one piece, there is no stuck bit syndrome because loosening the collet turns it in the ramp & the bit falls out by the time its loosened 1/8 turn. I've looked at a lot of routers without finding one that had a truly straight, no runout collet. Hitachi's M12V, way too big for this, has the best collets ever. > I have considered the colt trim router but I love the fact that I do not > have all that cooling air flushing over the cut surfaces. The PC router > I originally used threw dust all over my garage to the point I couldn't > stay in the room. THe die grinder along with a cyclone in line with my > shop vac has eliminated dust even when cutting MDF. I will still get > bigger chips on the surface but they are not dust.... Yeah, that Oneida 'Dust Deputy' is the slickest thing since bottled beer. But my shopvac is almost too much flow, heavier stuff tends to just sit there and spin till the power goes off. I got one about a year ago, several of those 5 gallon cans of trash has been dumped, I can still see the bottom of the tub in a 12.5 gallon shopvac, and I only pulled its filter ($30) once to clean it up when I put the DD on it. Best $80 I ever spent! Its usually plugged into the back of my table saw, controlled by one of those gizmos that turns it on & off with the saw. 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) My web page: <http://coyoteden.dyndns-free.com:85/gene> Excusing bad programming is a shooting offence, no matter _what_ the circumstances. -- Linus Torvalds, to the linux-kernel list ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
