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OK I’m admitting to being new at this router stuff. I got so excited at finding a great deal on some Dewalt abide outer bits at the Dewalt service center. I went bezurk and spent $150 dollars right on the spot. After I got home I noticed a little fleck of a chip right on the edge of my beautiful new Roman Ogee bit. Because carbide is hard and brittle is it supper tragic to find a very small (and I mean small) chip in carbide edge. Am I being overly concerned about this or could this smallest fleck or nick
mar the finished product? I’m just being careful because at these high prices and high RPMs you can’t be too careful.
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Replies
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Mr. Canada,
Hard to tell, depends on how small the "fleck". Have no expierince what so ever with DeWalt bits. But, I'm tighter than bark on a cherry tree, after dropping a benny and grant on bits, if there was a fleck of paint gone, I'd be down there gettin' it replaced.
But let me ask you a question, ever wonder why most women have a difficult time in measuring lengths? Well it's because all their lives they have been told that the distance below is six inches.
I-----------------------I
Point is my definition of a nick on a blade would be about the size of a pinpoint, a fleck reminds me of somthing that would be between a 32nd and a 16th, any thing bigger is a gouge. Those are just my definitions.
It does need to be resharpened no matter how minuscule the nick, for a brand new bit, that would be unacceptable to me.
Dano
*Chips on carbide are common on new and used tools; the stuff is like glass, hard as hell but fractures.Very good chance it will telegraph itself on to the work. Use a 5 or 10x lens you'll probably see the transfer. Problem? probably not, but you may have to sand the more pronounced defects.If the cutter is a joinery cutter, a dovetail bit for example, a chipped flute will frustrate or make some assemblies impossible.See bits for the more common figures of merit of router bits.
*The accual nick size is about 1/128th (not kidding) on the flute side of the blade and flecks out (like slate)on the beveled side to about 1/64th. I don't mean to be too picky. Being a Roman Ogee oviously it is a finnishing bit and will show up. At 22000 RPM it seems to me balance is everything. Routerman is predicting it is a symptom of internal microcracks. Speak for yourself on those distances and directions women give. My wife is always directing people 2 miles farther than the destination really is.
*i ever wonder why most women have a difficult time in measuring lengths? Well it's because all their lives they have been told that the distance below is six inches. I-----------------------IToo bad so much more comes out of your mouth than your pants, Dano.
*Canada,I use Whiteside and CMT bits, never got one new with a nick in it. I was addressing your question from more of "it's a matter of principle" angle. And perhape offended a few with an attempt at humor (for which I appologize if I offended anyone) to try to illustrate that I have no idea how big or small the nick was.I guess it just boils down to how much sanding you want to do. There is no right or wrong here. Personally, I perfer cutting wood as oppossed to abrading wood.Dano
*Danford;Obviously quality bits (yours that is). My bits (most) are Dewalt. I wonder who makes Dewalt’s bits. All I know is they have Israel stamped on the side and they don’t look cheap. Thanks for the patience I’m leaning a lot here. I’m still pittling and otherwise familiarizing myself with my router and table. I’m especially proud of my table inserts. Cut from 3/16th Plexiglas they are ten times more rigid then the ones that cam with it. Don’t mean to run this bit cheating thing into the ground but I still found it necessary to cheat my Roman ogee bit 1/8th inch to allow access to the full profile of this bit to the stock. That leaves 7/8th for the collet to grab. Your comment is appreciated. Routerman’s reference to the Pat Warner link was a big help too.
*Canada,I recall an article that I once read stating that the bit shank be seated 1/8 off the router shaft. My manual says 1/32 so that's what I do, for what it is worth.Dano
*I don't think that I mentioned that I went back and exchange that nicked Roman Ogee bit. BTW I picked up some little orings at Autozone to place on the shanks. That automatically spaces the shank so as to keep the collet from tightening at the flaired part at the neck.Thanks as always
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