Vibration dampener  

Re: Vibration dampener

Guys, you should definitely try this one out. Whenever I'm just a few meters away from my printer I can't tell if it's printing or not. All I hear is the fan noise

Re: Vibration dampener

I saw this a few days ago. My printer is pretty quiet as it is since I'm using NEMA dampers on X and Y axis. I have a low hum in the background and lots of fan noise at the moment.

Re: Vibration dampener

Printed these little babies earlier today......My god I love them already.

Re: Vibration dampener

Printed these little babies earlier today......My god I love them already.
Glad you like it

Re: Vibration dampener

This is a great one, fits perfectly compared to the other one. Thanks for designing it.

Re: Vibration dampener

This is not a good idea. The frame may be crossed/Slant.

Re: Vibration dampener

This is not a good idea. The frame may be crossed/Slant.
In what way? It's not like the frame is bobbling on these.

Re: Vibration dampener

Unfortunately, the frame itself is not firm enough to keep its geometry without good support of flat surface. After some time you will end up with Y axis twisted more or less.

Re: Vibration dampener

Hello (first post here).

I have my printer sitting of top of a metal file cabinet (no a lot of places to choose at my home) and I'm using these bench cookies to reduce the vibration, at least until I have the time to build a proper enclosure.

I was thiking to design and print a smaller version but after reading the lastest post in the thread I'd love to pick the community's brain about it. Do you think it will be a good idea or they will cause the same twisting issues discussed before.

Thanks!

Re: Vibration dampener

Unfortunately, the frame itself is not firm enough to keep its geometry without good support of flat surface. After some time you will end up with Y axis twisted more or less.
It's actually not relevant that you have a flat surface for this printer. The Y frame is pretty firm, yet if it gets twisted it holds that shape.

Haven't you experienced a slightly twisted Y carriage on the i3? If you have, then you'll notice that on a flat surface it still tends to hold its twisted shape until you by hand twist it back to normal. And these dampers aren't exactly soft and squishy. They're actually firm and hold their shape, all meanwhile absorbing most of the vibrations.

Re: Vibration dampener

I do have a tendency to agree with Sascha's comments here, although I can see where David is coming from.

Having used these dampers myself since receipt of both the Mk1 and Mk2, I have not experienced any Y frame distortion while using them. The only time it has happened to me (and only with the Mk2) has been while moving the printer to my workbench to make some adjustments where I may have been a little too rough in its handling.

I do check the printers every 2 weeks when carrying out maintenance (mainly cleaning).

Peter

Re: Vibration dampener

The problem is that with those dampeners you actually never know if the frame is twisted or not. The dampeners can cover small distortions. When placed on flat surface, twisted frame reveals itself very easily.
I would rather put the printer on small solid board and put some similar dampeners between the board and the table/desk/whatever.
But it's everyone's choice. Be happy with whatever you want or like as long as it works for you.

Re: Vibration dampener

I would rather put the printer on small solid board and put some similar dampeners between the board and the table/desk/whatever.
But it's everyone's choice. Be happy with whatever you want or like as long as it works for you.
Not to be rude or anything, but if your point was only to tell us how you like to solve it, why not tell us up front instead of first talk about how this solution is worse in your eyes?

Also, if you're so worried about twisting Y-carriage, it's not so hard to just lift the printer off and place it on a flat surface for a maintenance check, as Peter described.

Re: Vibration dampener

if your point was only to tell us how you like to solve it
No. I tried to point out one possible flaw of this design. Don't try to find any conspiracy theory in my post. 🙂

Re: Vibration dampener

Hi,

Honestly from my (little) experience, what is the more likely root cause to twist the frame is the way you tighten the bolt maintaining the Z-frame.

When you are tightening one of these bolt on the M12 thread, there is a high chance that the torque applied while tighening this bolt can level one of the corner and maintain it his way as soon as the bolt is tighten enough. It is very noticeable if you do that without the small pads under the corners, and use some business card under the corners to evaluate the modification of the friction needed to slide them under these corners.

If you tighten these bolts by small steps (the right, then the left, then the right again) and by using both spanners to tighten at the same time the front and the back bolts, you can almost avoid this issue.

I really do not think that putting the pads before this step is a good idea.

Re: Vibration dampener

Not to be rude or anything, but if your point was only to tell us how you like to solve it, why not tell us up front instead of first talk about how this solution is worse in your eyes?

There's no relevance to this reordering. Whether he points it out up front or later doesn't make a difference.

It's just a bad idea. You can argue the degree of how bad it is, but the best you can do is "slightly bad idea".

Also, if you're so worried about twisting Y-carriage, it's not so hard to just lift the printer off and place it on a flat surface for a maintenance check, as Peter described.

For starters, if it's in an enclosure or something, just moving it out is not always a simple thing.

Second, so you want to validate if it's distorted while sitting on these dampers. So you lift the printer off and place it on a flat surface... where the frame will conform to the flat surface you placed it down on. Everything checks out, so you put it back on the damper. Where it potentially re-twists, but you think things are straight because you validated it against a flat surface, at which point your recommended procedure only serves to mislead instead of validate.

So you've doubled down and reinforced a bad initial idea with a secondary bad procedure. You can argue the degree of how bad it is, but now you've set yourself back two degrees of "slightly worse".

Re: Vibration dampener

Turns out that the bench cookies are not a good idea. The rubber seems to be too soft and that made the printer to be unleveled.

After upgrading the firmware to 3.0.7 I got the 'X/Y skewed severely. Skew will be corrected automatically' error for the first time. So I removed the cookies and since I bought a couple of LACK tables to make an enclosure used the base of one with a 1cm cork sheet to rest the printer. Tried calibrating XYZ again and this time I got the 'XYZ calibration ok. X/Y axes are perpendicular.'

Re: Vibration dampener

These are fantastic. Immediate improvement. Fan noise is all I hear now. Thanks to the person who changed the design and for the mentionings. I have no idea how these could contribute to axis issues...they seem like a brilliant solution and simply work. 3 thumbs up. (Or 2 thumbs and a big toe)

Re: Vibration dampener

Download, print and relax easy with these dampers. I printed the mini version as I am in an enclosure in ABS and I now have to keep going to check the printer its so quiet. 😉

Stick to a tried and tested design http://www.thingiverse.com/thing:1707045 . The cookie looks like it needs more then a printed design and looks much bigger then these. Simple and very effective nice one Sacha. 😉

My prints come out perfect in every way so do not see this being a problem for twisting, I would agree that the twisting tends to be from when assembly and if you do have a problem adjust when one the dampers. I can print in peace and quiet while all the haters have the hummmmmmmmm and vibrations 😆