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post #1 of 12 (permalink) Old 09-03-2012, 03:16 PM Thread Starter
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Hello all! My name is George and this is my first post to the forum. I am a 65 year old retired accountant from Iowa. I have been a sawdust manufacturer for 40 years, and am finally trying to become a woodworker!

I recently bought a used JessEm router table comlete with the Mast-R-Lift Excel and PC 75182 router motor. I am in the process of gearing up to make some built-in cabinets in my dining room with raised panel doors. As a warm up I am now working on a storage cabinet in my basement that will also have raised panel doors. It doesn't need them, but I need the practice. I am using some tongue-and-groove joinery in the cabinet.

Here's my question: I bought a matched tongue and groove bit set from Sommerfeld's website. I inserted the rubber grommet in the collet as recommended to get consistent draw down of the shafts in the collet. The collet is so deep, I had to drop 3 rubber grommets into the collet opening before the shaft of the groove bit would contact them. The shaft of the tongue bit is shorter, so it hits the top of the collet nut before the shaft even touches the rubber grommets. As a result, the groove bit is sitting up too high in relation to the 1" X 4" I am trying to rout the tongue on. I could add a couple of more rubber grommets, but I don't want to do something that might damage the router or be unsafe somehow. Sommerfeld uses a 3 1/4 hp Triton router in their how-to videos, and they only use one rubber grommet. Does anyone know if the collet in the PC 7518 is just that much deeper than the collet in the Triton? I don't want to do something stupid.

Sorry to be so wordy, but I wanted to state my problem clearly. Thanks for your help!

George
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post #2 of 12 (permalink) Old 09-03-2012, 05:04 PM
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Welcome to the forum.

Thank you for joining us, George.

The method used by Marc is really only suitable for a router where you can push the cutter into the collet and hear the cutter hit the end of the shaft.

Some routers have a much deeper collet and some members use a small length of rod to close this gap.

I will check the depth of the Triton and get back to you.

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post #3 of 12 (permalink) Old 09-03-2012, 06:46 PM Thread Starter
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Thanks you, James! I appreciate your knowledge and look forward to any additional information you are able to provide.
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post #4 of 12 (permalink) Old 09-04-2012, 01:51 AM
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I checked the Triton TRA000 and also the Makita 3612C

The Triton is approx. 27mm from the top of the collet to the shaft and the Makita is approx. 60mm.

There is a significant difference. Other routers may vary even more.

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post #5 of 12 (permalink) Old 09-04-2012, 07:07 AM
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George I'm not familiar with your router or bits so this is a general answer. Normally when using a rail and stile bit you adjust the router height and not the bit height. I'm not sure what the rubber grommets would do to help. Once you get things set up the way you want them make a set up block so that the next time you will only have to make minor adjustments. Also if your bits came with shims use as few as possible to get a good fit.
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post #6 of 12 (permalink) Old 09-04-2012, 08:24 AM
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George,

I believe the purpose of the rubber grommet is so that the shaft of the bit does not sit at he bottom of the collet. I do not think it is necessary to place more than one in the collet. As Art stated adjust the router height no the bit height. That is the purpose of the lift kit.
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post #7 of 12 (permalink) Old 09-04-2012, 09:43 AM Thread Starter
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Thanks again, James, for taking the time to do this research. Much appreciated! It's useful information to know that there is such a difference between routers.
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post #8 of 12 (permalink) Old 09-04-2012, 09:46 AM Thread Starter
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Thanks, Art, for your quick response and for the info. Very helpful.
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post #9 of 12 (permalink) Old 09-04-2012, 09:51 AM Thread Starter
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Thanks, Mike! I appreciate you taking the time to help.
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post #10 of 12 (permalink) Old 09-04-2012, 10:37 AM
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Hi

Many routers have a deep hole under the router bit, you don't need to stack them up if you press it into collet nut..
It's great way to use the matched set of router bits no setup block is needed the norm..


http://www.sommerfeldtools.com/somme...log/page03.pdf

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Last edited by bobj3; 09-04-2012 at 11:04 AM.
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