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Is it a good idea to add a bearing below the bit (in my case, a round over bit) and cut a small grove after leaving space for the bearing and put a C ring in the groove to hold the bearing?
Thanks,
Arvind
Thanks,
Arvind
I can see no reason why not BUT collars are available held in place with a grub screw. Bits are also available with top and bottom bearings.Is it a good idea to add a bearing below the bit (in my case, a round over bit) and cut a small grove after leaving space for the bearing and put a C ring in the groove to hold the bearing?
Thanks,
Arvind
There is an answer to this problem, the MUSCLECHUCK which has several times the grip of a standard collet PLUS it gives about and extra 1/2" depth of cut PLUS no spanners are required, just a half turn of a 4mm hex key to lock/unlock.Technically you might be able to do that, but even the smallest bit of out of balance-ness of the contraption would put you at great risk. Amiong other things, you will not be inserting the bit almost all the way into the collet. Any shaking will likely destroy your collet, if you are lucky, and fingers and other gear if the collet fails and spits out the bit. You will NOT be able to dodge it if it heads toward you. Collets work by tightening by a few thousandths of an inch. As you can see from the picture, there's not much collet doing the squeezing grip on the shank to start with. View attachment 398017
Hi Harry, if by BELOW you mean on the shaft, i.e. between the business end the collet, I have to agree. But I always understood that position to be a top-mounted bearing, or have I got it wrong? I thought a bottom-mounted bearing was the type in the image I posted, very common in round-over bits.
Hi Harry, if by BELOW you mean on the shaft, i.e. between the business end the collet, I have to agree. But I always understood that position to be a top-mounted bearing, or have I got it wrong? I thought a bottom-mounted bearing was the type in the image I posted, very common in round-over bits.
Hi Harry, if by BELOW you mean on the shaft, i.e. between the business end the collet, I have to agree. But I always understood that position to be a top-mounted bearing, or have I got it wrong? I thought a bottom-mounted bearing was the type in the image I posted, very common in round-over bits.
What is wrong with MY logic which I've used all my routing career?As I said. 👍
How on earth would one fit a bearing to what I've labeled TOP. The original poster talked of putting a groove and this could only go on the shaft which is the bottom of the bit irrespective of whether it's in a table or hand held, surely.Hi Harry, nothing wrong, it is a question of spatial orientation. I don't want to use the word "intuitively", as there are obviously two different possible intuitions, but in my interpretation, the top and bottom you show are applicable to a table-mounted router. In the hand-held configuration, bottom would be the opposite of what you are showing. I can live with either, I just wish we could standardise to avoid confusion.
For example, if the OP wants to fit a bearing to the bottom of the bit (in my sense), I think it is a very bad idea - he should buy a suitable bit.
If he wants to do it in your sense, eminently doable with a bearing and collar, I have done it myself with straight bits, but as you say, what would be the point of doing it with a round-over bit, which he specifies?
So we have directional confusion compounding confusion of intent.
In no way questioning your experience, which I admire, but I think you can see the source of confusion?
Can anyone dispute this example?Top bearings don't have a nut. Just for clarity. Not all straight bits cut a perfectly flat groove. I like to post this now and again just to clarify which is which. Don't forget to clean the cutting tips and lube the bearings every once in awhile.
View attachment 398113
No sir, cannot. However, Harry, if you don't mind my saying so, it is not an appropriate example. A tree only grows one way, root and tip are not i terchangeble, and a Xmas tree will only be displayed one way, even if stored upside down at times.Can anyone dispute this example?
No symmetrical item like an hour glass can have a top and bottom, a router bit is not symmetrical!No sir, cannot. However, Harry, if you don't mind my saying so, it is not an appropriate example. A tree only grows one way, root and tip are not i terchangeble, and a Xmas tree will only be displayed one way, even if stored upside down at times.
Consider the example of my hourglass, which can be used both ways: would you insist on labelling one bulb as "top", and the other "bottom"? I still maintain it is a matter of orientation in space.
What if you were to utilise the principle of your ingenious router lift, to make an overarm router? Would "raising" the router be applicable even if you were actually "lowering" the router?
Anyway, enough of the semantics, I do not claim any spatial ascendancy, I merely state that there is room for confusion. I bow out of this discussion - the field is yours.
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