On Sun, 25 Apr 2004 14:34:25 GMT, email@example.com (Doug Miller)
One of the quickest relies in Usenet history.
|>I finally got around to opening the box on the D4 that I bought during
|>the Feb Woodcraft sale.
|>I have been having a hell of a time with chip-out and break-out when
|>doing through dovetails. I am an admitted novice at this but I dialed
|>in the fit pretty quickly. A little more practice and I'm good to go
|>on that score. But so far this is a real good way to turn hardwood
|>I watched (over and over) the video and the demo guy just zips through
|>without effort. I get terrible chatter when the DT bit is making a
|>full cut. I've overcome this to a degree by making a roughing pass
|>with a 1/4" straight bit, but needless to say this is a PITA and
|>another chance for error. BTW, I'm using the two-flute bit supplied
|>with the jig and a DW625.
|Something's definitely wrong somewhere. I've *never* had a chatter problem
|with my D4, using a Bosch 1617EVS router and the Leigh bits. I'm not quite as
|fast as the guy in the demo :-) but I've found it to go pretty quickly and
|easily, once I have the fit dialed in right.
Good to know.
|a) Are the boards straight and flat?
Absolutely. Freshly jointed, planed and squared.
|b) Are they clamped down tightly?
|c) How thick are the boards? (Thin stock is more apt to vibrate)
Mostly 3/4" samples just like the instructional material recommends.
|d) Is the jig clamped firmly to your workbench?
|e) Are the guide fingers of the jig resting securely on the wood?
|f) Is the bit secured firmly in the collet?
|g) Have you checked the bit for chipped flutes?
|h) Have you checked the bit for run-out? (Does it wobble?)
I'll take a closer look at this. I have noted some galling on the
shanks of both the DT and straight Leigh bits, however. I never see
this happening on the many Whiteside bits I use in the same machine.
|i) How about the router collet? Does it wobble?
|j) Did you use the Craftsman bit successfully in the same router, or a
|different one? If a different one, have you tried the Leigh bit in that
|router, or the Craftsman bit in the DW?
Same router. The shank on this bit is pretty short and I did have one
episode where the depth changed because the bit withdrew from the
collet until I really cinched it down.
|k) What kind of wood are you working with?
Mostly poplar for experiments. But I successfully did HB in a cherry
drawer front with 1/2" maple sides. The TD at the other end of the
drawer were a disaster. I think I'll do a rabbet joint there and get
this project done for now. [g]
|l) Are you forcing the router into the wood? Light pressure and a little
|patience will work better than trying to hog everything out in three seconds.
No, not forcing it.
I need some other size DT bits, so I'll order up some Whiteside bits
and eliminate that variable. Thanks for the tips.