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Router table vibration

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Forum topic by mummykicks posted 08-15-2013 08:19 PM 918 views 0 times favorited 1 reply Add to Favorites Watch
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mummykicks

85 posts in 1268 days


08-15-2013 08:19 PM

So I have a dewalt 618 router mounted in an Incra router table/lift/stand (the sheetmetal angles with the extruded aluminum legs).
The thing is I’m getting more table vibration than I would expect, and it seems to change over time.
I measured the runout of my router, and it’s about .004” total at 1.5”. I also have a muscle chuck installed which adds another .001” of runout. Based on what I’ve been able to google, this seem about average for run-out.

When I hold the motor in my hand and turn it on it doesn’t seem to vibrate much, and using it in either the plunge or fixed base seems fine.

Once installed however, the corners of the table can vibrated enough that your hand might go asleep if you left it there long enough. The odd thing is that when I first start out it seems much less than later on (gets worse over time). It doesn’t affect the cuts as far as I can tell and maybe I’m a bit over-sensitive to it.

Now I have a hard time believing that a little bit of pitch or something on the bit would cause this, and I never let the motor get too hot. I’ve got the router dust collector kit installed (blue hose attachment that the router bit sticks up through) and no dust is going into the motor.

I really don’t understand a mechanism where the router warming up would lead to more vibration. I’m not sure but it did seem that honing the bit made it better, but I don’t know if it just let the motor cool down some.

I have two of these routers, and both seem the same in this regard. Feeling around the two shafts that the lift runs on seem to be what’s getting excited.

Anyway, just wondering if anyone else has experienced this, and what they did about it. I made sure the router plate is mounted right and sitting on all of the buttons. I will eventually build a cabinet for it, and I expect with more mass it will help things out.


1 reply so far

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GraniteState

22 posts in 1238 days


#1 posted 08-16-2013 04:14 AM

My old bench top router table would do this if I didn’t clamp it down to the bench really good. I bolted the bottom of mine to a 3/4 inch piece of plywood and then clamped the plywood to my bench and it would take the vibration away. Also check the bolts that fasten under the top, they sometimes will come loose and could cause vibration. You are going in the right direction of more mass will help. good luck

-- Jay from NH......http://www.granitestatewoodworking.com/

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