Getting a special router bit made - Router Forums
 
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post #1 of 9 (permalink) Old 12-04-2013, 12:52 AM Thread Starter
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Default Getting a special router bit made

I am wanting to get a router bit produced,still working on design. I won't to divulge any details,I believe there may be one version that is in use by tool handle makers.
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post #2 of 9 (permalink) Old 12-04-2013, 01:16 AM
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Whiteside Machine will make custom bits I hear.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
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post #3 of 9 (permalink) Old 12-04-2013, 02:42 AM
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Try magnate.net

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post #4 of 9 (permalink) Old 12-04-2013, 01:44 PM
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I would call Whiteside. 800-225-3982

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post #5 of 9 (permalink) Old 12-04-2013, 03:29 PM
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Over the years I have had quite a few bits made that are not from the normal range, there are some limitations on what they can do and it is normally due to overly wide bits that they don't like making due to the very high rotation speeds that happen when a bit is very wide, I don't know the math on how fast the tips are spinning when the bit is wider however the router speed is the spindle speed so out at the end of a wide bit then it is going far far faster than the shaft speed, with speed control then the bits can be slowed down but they will argue that as they have no control on how fast the bits will be run then they will not make them and the one bit that I do have that is overly wide then I have to use it in a special shop made base plate that has an 90mm hole in it as the cutter will not spin inside the routers normal base plate, I did also try to get a long bit made and they were not happy to go over 75mm in height for the tungsten and even though I made the argument that I was only going to use it to skim the edge of my work as a 'clean up cutter' they would sill not make is as they said that it would exceed the side ways load limit and break if it was used for a heavy cut, still if what you are talking about is not huge in some way then anyone who can sharpen and repair cutters can make them but the best deals would be from those large companies that have the best cnc machines. ngm

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post #6 of 9 (permalink) Old 12-05-2013, 12:45 AM
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Neville, circumference x rpm = linear speed. pi x D= C so a 90mm bit is almost 283mm in circumference. Turning at 12000 rpm, which is about as slow as a router will turn, it is going 3,396 meters per minute at the rim. I would say they were justified to be concerned. I wouldn't want to be riding in a car that was going 3 1/2 km a minute.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
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post #7 of 9 (permalink) Old 12-09-2013, 07:01 AM
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Quote:
Originally Posted by Cherryville Chuck View Post
Neville, circumference x rpm = linear speed. pi x D= C so a 90mm bit is almost 283mm in circumference. Turning at 12000 rpm, which is about as slow as a router will turn, it is going 3,396 meters per minute at the rim. I would say they were justified to be concerned. I wouldn't want to be riding in a car that was going 3 1/2 km a minute.
Charles thanks for going to the trouble of your detailed reply and for providing your math, it is nice to know that I am being read, I did know that at the fastest router speed then my 90mm bit is smoking along, I never run it at full speed myself and I never lend that one either, in fact I don't lend any of my cutters as like to know that the user is treating them with love and as no one loves them as much as I do then I don't lend cutters, I did once, I lent a 3/8 quarter rounding over cutter that had a bearing on it's end and when it came back then he had ground the bearing off as it was in his way, so now I don't lend them out, and to answer your question, no I would not want to be going at 3.5 klms per minute either, I did not know that full speed would be that fast but I did know that I was correct and that out past the spindle then the speed picks up and the more you go out then the speed gets very fast indeed. cheers Neville

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post #8 of 9 (permalink) Old 12-09-2013, 08:54 AM
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Neville I had never done the math before and I was a bit surprised at the numbers too. When you consider doubling that at full router speed then it does get a little scary.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
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post #9 of 9 (permalink) Old 12-16-2013, 04:23 AM
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Quote:
Originally Posted by Cherryville Chuck View Post
Neville I had never done the math before and I was a bit surprised at the numbers too. When you consider doubling that at full router speed then it does get a little scary.
Charles since the last time I was on this thread then I have been watching a TV show about the earth going around the sun once a year, and there was an analogy that does also apply to router cutters, you see if you were standing at the 'exact center' on one of the poles with your arms out stretched then you would take a slow 24 hours to do a single turn, you would not feel the slowness of course but it would still take 24hours to do a full turn, now if you were standing on the exact line of the equator then you are going at 1000 MPH, or somewhere about that from my memory, now it would still take 24 hours for you to do a full turn and you would still not feel the speed but instead of doing that turn stationary then you are doing the turn at a very fast speed, so the longer the string you are on then the faster you are going, so your math did surprise me a bit but it is very fast out there at the tip of a 90mm router cutter. Neville
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