Is it common for the McFly bit to shake the unit so badly that the sweeper falls off? I’ve tightened all the screws but the vibration is still there. Anyone else having this problem ?
I never had that happen.
How deep are you cutting at what RPM and feedrate ?
What is the material ?
Are you cutting a slot ?
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The material is tropical walnut The speed is 1800 (#3 on the router) the nax depth is .125" but none of that matters because the vibration is there even before it starts cutting.
Check to make sure your collet is seated correctly and not damaged. Also check to make sure your McFly isn’t damaged (bent or missing cutters that would imbalance it). Further, make sure your spindle/router is centered and secure.
Do other tools vibrate too?
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No other tools vibrate. I used the same collet with both a v bit and down cut bit with no vibration. That’s why I’m pretty sure the problem is with the McFly bit. There is a little nick in one of the cutters but I don’t think it can cause the type of vibration I’m experiencing.
Can you watch the cutter as you turn the collet by hand? Does it look like the head is wobbling or tilted at all? And if one of the inserts is chipped, you should rotate the insert so the damaged section is towards the middle so the weight imbalance is reduced.
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not near the machine right now. the chip nis super tiny but I will move it when I get home.
A big cutter like a Mcfly and 1/8" depth of cut is way too much. As others suggested maybe your bit is not seated properly. If using a Makita/C3D router power it off and insert a regular bit. Grab hold of the bit and see if your router shaft is moving. Makita/C3D routers have their lower bearings go bad.
I have a 4" OAL 1/4" bit that on my Dewalt I have to carefully insert it or it rotates out of round. On a longer/big bit correct seating is very important. The bit should be inserted at least to the top of the collet. Do not insert the bit all the way. When the collet nut tightens up against the collet and bit it pushes the collet and bit up an inclined plane. If the bit bottoms out at the top of the router shaft it may not be seated well and may not be really tight. Sounds like your bit is running out of round with a lot of run out.