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Dustshoe messing things up!

Hi, i have a 750 x 750 Z1+ and as said in the title, my dustshoe is messing with my projects. I saw it when i first surfaced the spoilerboard, it took me a few minutes to identify it being the pr**k. On the edges, on the 2nd surfacing, when the router was starting to move, there was smooth little bumps in raster mode (on Vcarve).

Whenever there's a change in direction (on the X and Y axis), the hairs on the dustshoe goes from dusting in one direction to dusting in the other, slightly lifting the router assembly in the process. In the picture attached you can clearly see the difference between a cut with the dustshoe (on the left) and a cut without one (on the right).

There's no obvious slack on any axis, the only thing i can see having an influence is on the Z axis, i can lift and lower the router asembly by the amount of flex there's in the flexible coupler. I can move it a little and see the spring expanding and compressing. But as it doesn't cause any issue when the dustshoe is off, i don't think that's really a problem.

I can and had, eliminate this problem when i need to surface entirely a piece that is smaller than the 520 x 520 work space of my workbee, i make the surfacing starts outside of the piece allowing the hairs of the dustshoe to change direction, well, outside of the piece. But when in carve pockets, i can't do that...

So here's my question, is there any way to adress this problem or am i condemned to wait for my next house, where i'll have enough place to put my workbee in the enclosure and have it running without the dustshoe ?

Thanks !

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Hello,

It could be because the dust shoe is set too low on the router head, so the brushes are squished. In the Work Zero position, you want the brushes just touching the surface of the material.

Also for the Z-Axis's lifting, if the lead screw is touching the stepper motor shaft, this should not be possible, please recheck this.

Thanks.

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Thanks for the answer !

Playing with work zero won't solve the problem as the dustshoe is squished harder on the surface, the deeper the carving goes. I also have very short end mills so the dust shoe already start squished against the material.

"Also for the Z-Axis's lifting, if the lead screw is touching the stepper motor shaft, this should not be possible, please recheck this."

Did recheck and the problem came from a lock collar becoming loose !

Still, the dustshoe does it's thing. There's a tiny amount of play on the X carriage, i can twist it resulting in a millimeter (give or take) of movement at the end of the end mill. I put some rolls of tape on my spoilboard and carefully lowered the carriage on it, checked i can't twist it and tightened (again) the wheels as described in the guide, but once up in the air, wheels don't turn anymore, so i have to loosen them. Maybe giving a shave to the dustshoe will mitigate the problem but not an ideal solution.

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@paratyphi Thank you for confirming. You would need to adjust your end mills to protrude more so the bristles don't become squished. As you have mentioned you have short end mills, I would remove the dust shoe when using these types of end mills.

Thanks.

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Author avatar Paratyphi will be eternally grateful.
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