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MKSA

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AmyTheBun


maybe I can replace the shafts and bearings? I heard drylin have to be press-fit or otherwise are too loose. or 3d print pla bearings. even tho they could melt in an enclosure and last time I tried I had no luck.

I should add that my shaft doesn't vibrate whatsoever tbh. neither does my bearing. it's just the belt + pulley + y carriage. maybe if I get a/make a lighter carriage for my Y axis It'll be less obvious. it's a really heavy piece of steel! I could make it it out of 4mm aluminium and cut the X shape in it!

Igus Drylin mounted as per Igus specs (refer to Igus docs, it is not just to press fit them) are not forgiving, they require a properly designed machine, that is not overconstrained, is properly aligned etc... .
If not, they will most of the time bind or at least require a lot of force to move !
Ball bearing based guides will usually "align" a flexible frame (they may "grind" their way), Igus bearings will not !

So in any case, they are silent, moving or blocked :)

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AmyTheBun


maybe I can replace the shafts and bearings? I heard drylin have to be press-fit or otherwise are too loose. or 3d print pla bearings. even tho they could melt in an enclosure and last time I tried I had no luck.

I should add that my shaft doesn't vibrate whatsoever tbh. neither does my bearing. it's just the belt + pulley + y carriage. maybe if I get a/make a lighter carriage for my Y axis It'll be less obvious. it's a really heavy piece of steel! I could make it it out of 4mm aluminium and cut the X shape in it!

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dlc60

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Ohmarinus

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AmyTheBun

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Ohmarinus
You're printing at a very high speed it seems. I don't know. Maybe you're just demanding too much of the machine? Both high speed and low noise? It sounds like a resonance by the way. Haven't heard this from my machine with the same drivers.

It's printing at 45mm/s :c

removing the belt spring for the bigger motor actually reduced it and all. but now it only happens at 55-75mm/s and when doing a travel move. I guess if I stick to 45mm/s and print slow I won't have enough of an issue to keep me awake all night

When I had this issue, I lowered the print speed a bit and added some felt feet underneath my printer. This dampened the sound way more than using rubber feet. Maybe that will help as well? It does sound like resonance.

My Anet A8 has always done this. The worst of the noise comes from the Y axis, it just seems "rougher". I reduced much of the noise by replacing the four linear bearings on the bed carriage with three drylin bearings (could not get four of them to align, but three would). It is still louder than my Z-bed-moving Cartesian printer by a long shot. I think that flinging the bed's mass around just vibrates a lot and if your system isn't "mil spec" stiff, it makes noise. My Delta printers are way noisier, except for one. On that delta I dropped the noise level a LOT by getting three felt chair leg pads, punching holes in the middle of them and bolting the printer to a rigid surface. The noise reduction was incredibly noticeable. Just putting the pads on the bottom didn't do much, but since the Makerbeam XL beams have threaded centers, I could bolt the unit down with the felt pads between the melamine and the printer uprights. It made a big difference.

DLC

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Ohmarinus

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AmyTheBun

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Ohmarinus
You're printing at a very high speed it seems. I don't know. Maybe you're just demanding too much of the machine? Both high speed and low noise? It sounds like a resonance by the way. Haven't heard this from my machine with the same drivers.

It's printing at 45mm/s :c

removing the belt spring for the bigger motor actually reduced it and all. but now it only happens at 55-75mm/s and when doing a travel move. I guess if I stick to 45mm/s and print slow I won't have enough of an issue to keep me awake all night

When I had this issue, I lowered the print speed a bit and added some felt feet underneath my printer. This dampened the sound way more than using rubber feet. Maybe that will help as well? It does sound like resonance.

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Ohmarinus

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AmyTheBun

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Ohmarinus
You're printing at a very high speed it seems. I don't know. Maybe you're just demanding too much of the machine? Both high speed and low noise? It sounds like a resonance by the way. Haven't heard this from my machine with the same drivers.

It's printing at 45mm/s :c

removing the belt spring for the bigger motor actually reduced it and all. but now it only happens at 55-75mm/s and when doing a travel move. I guess if I stick to 45mm/s and print slow I won't have enough of an issue to keep me awake all night

When I had this issue, I lowered the print speed a bit and added some felt feet underneath my printer. This dampened the sound way more than using rubber feet. Maybe that will help as well? It does sound like resonance.

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AmyTheBun

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Ohmarinus
You're printing at a very high speed it seems. I don't know. Maybe you're just demanding too much of the machine? Both high speed and low noise? It sounds like a resonance by the way. Haven't heard this from my machine with the same drivers.

It's printing at 45mm/s :c

removing the belt spring for the bigger motor actually reduced it and all. but now it only happens at 55-75mm/s and when doing a travel move. I guess if I stick to 45mm/s and print slow I won't have enough of an issue to keep me awake all night

Quote
Ohmarinus
You're printing at a very high speed it seems. I don't know. Maybe you're just demanding too much of the machine? Both high speed and low noise? It sounds like a resonance by the way. Haven't heard this from my machine with the same drivers.