Where to get Sorbothane feet in Europe  

RE: Where to get Sorbothane feet in Europe

Posted by: @peter-c20

I see. Is it dead silent now? Have you compared arrangements a) with b)?

Very quiet. The Mk3 is a very quiet printer, but after moving mine into a cabinet, it was noticeably noisier due to resonant vibrations in the cabinet. Since adding the paver & Sorbothane pads, I often have to look to confirm it's printing and I often fall asleep on the couch nearby.

Stefan of CNC Kitchen has videos on this topic that are well worth watching:

• Vibration analysis

• Silencing the Prusa Mk2

Based on his findings, I opted for the approach I used. I've got more notes here.

RE: Where to get Sorbothane feet in Europe

@bobstro

Thanks. Very useful information. How did you "sealed the paver to keep concrete dust away from the printer and finished it off with a textured bronze finish."?

RE: Where to get Sorbothane feet in Europe

Posted by: @bobstro

@peter-c20 - I went with these feet on the printer, but used felt on those and mounted the printer on a paver slab. The slab is mounted on the Sorbothane pads. This couples the printer to the paver mass which greatly reduces vibration, but decouples the paver & printer mass from the table underneath, greatly reducing resonant vibration.

There are two files: Rigid_feet_for_MK3 and Rigid_feet_for_MK3_higher_no_felt. Which one should I use?

RE: Where to get Sorbothane feet in Europe

Posted by: @peter-c20

Posted by: @bobstro

@peter-c20 - I went with these feet on the printer, but used felt on those and mounted the printer on a paver slab. The slab is mounted on the Sorbothane pads. This couples the printer to the paver mass which greatly reduces vibration, but decouples the paver & printer mass from the table underneath, greatly reducing resonant vibration.

There are two files: Rigid_feet_for_MK3 and Rigid_feet_for_MK3_higher_no_felt. Which one should I use?

Sorry I messed up the files. I meant pursa-i3-mk3-3030-sorbothane-foot.stl or prusa-i3-mk3-3030-sorbothane-foot-lipped.stl ?

RE: Where to get Sorbothane feet in Europe

Posted by: @peter-c20

Posted by: @peter-c20

Posted by: @bobstro

@peter-c20 - I went with these feet on the printer, but used felt on those and mounted the printer on a paver slab. The slab is mounted on the Sorbothane pads. This couples the printer to the paver mass which greatly reduces vibration, but decouples the paver & printer mass from the table underneath, greatly reducing resonant vibration.

There are two files: Rigid_feet_for_MK3 and Rigid_feet_for_MK3_higher_no_felt. Which one should I use?

Sorry I messed up the files. I meant pursa-i3-mk3-3030-sorbothane-foot.stl or prusa-i3-mk3-3030-sorbothane-foot-lipped.stl ?

The new design uses Rigid_feet_for_MK3 and Rigid_feet_for_MK3_higher_no_felt. Which is better?

RE: Where to get Sorbothane feet in Europe

I just used the ones that fit my round felt pads. No need for added height.

RE: Where to get Sorbothane feet in Europe

Posted by: @bobstro

Posted by: @peter-c20

[...] b) printer->paver slab->Sorbothane->enclosure's top surface which may deform the Sorbothane  pads due to the heavy weight of the paver

 

This. I purchased sufficient Sorbothane pads to support the combined paver & printer weight according to the manufacturer's recommendations (plus some). I wound up with 9 disc feet on a 17x17 inch paver with Mk3. The Sorbothane pads do deform, but this actually levels the printer a bit if the shelf isn't perfectly flat.

I bought a pack of 8 1" Dia Sorbothane 50D. If I do it your way, does that mean I got the wrong one? From other posts, it seems that 1" 50D is good only when a concrete paver is not taken into consideration.

RE: Where to get Sorbothane feet in Europe

Posted by: @peter-c20

I bought a pack of 8 1" Dia Sorbothane 50D. If I do it your way, does that mean I got the wrong one? From other posts, it seems that 1" 50D is good only when a concrete paver is not taken into consideration.

RE: Where to get Sorbothane feet in Europe

Posted by: @bobstro

Posted by: @peter-c20

I bought a pack of 8 1" Dia Sorbothane 50D. If I do it your way, does that mean I got the wrong one? From other posts, it seems that 1" 50D is good only when a concrete paver is not taken into consideration.

I went with the Sorbothane 70D 1x.25 inch pads. I've forgotten what each pad is rated for, but I know a pack of 8 was way overkill. With 50D, you're probably still well within the range that a paver+printer will weigh. You can always put more under the paver to support more weight. I recall the paver was 17lbs.

 

Thanks. Where did you get the paver?

For those 3D printed feet, there are two small squares sticking out on the top. Do you just put the paver on top of the feet as is? How did you seal the paver to prevent duct from getting into the printer?

RE: Where to get Sorbothane feet in Europe

Posted by: @peter-c20

Thanks. Where did you get the paver?

I think I bought mine at Lowe's, though any garden supply store should have them. They're just large square concrete pads for building walkways and patios. A large marble chopping board might look nicer and be a bit smaller, though more expensive.

For those 3D printed feet, there are two small squares sticking out on the top. Do you just put the paver on top of the feet as is? How did you seal the paver to prevent duct from getting into the printer?

Just to be clear: The feet go on the printer with felt pads. The printer sits atop the paver. The paver sits atop the Sorbothane pads.

RE: Where to get Sorbothane feet in Europe

Posted by: @peter-c20

[...] Very useful information. How did you "sealed the paver to keep concrete dust away from the printer and finished it off with a textured bronze finish."?

Automotive filler primer to seal it, then a few coats of textured bronze finish paint. Just the same outdoor paint you can use on metal fences and grilles, nothing fancy. Lots of colors and texture options to choose from. I put some rubber paint on the bottom, but that was a waste.

RE: Where to get Sorbothane feet in Europe

@bobstro

Thanks. I guess I might have misunderstood. Do you have a photo that shows the layers?

RE: Where to get Sorbothane feet in Europe

Posted by: @mark-r42

 

I cannot recommend this mod enough! Thanks to brigandier who I saw recommend it in some thread long ago...

 A90122C5-2C95-49A6-A3DE-22C2D51EC9AC.jpeg

@mark-r42

Hi !

can you share stl for the holder of hemisphere ? i found other holder but not good as in the picture

thanks

Leo