Yes easy to adapt, the v1.0 should be easy to add as well

That is a very clever idea, love it!

Yes but I do not like them , but Igus is doing very impressive and good products! They are more complex to install properly and Prusa printer is a pretty bad platform for that...

I have first used RJZM-01-08 on X and Y axis with original rods. They were having too much play and, at that time, I also learned that Igus bearings need special rods because of their self-lubrication. I then switched to RJ4JP-01-08 which have less play (that what the datasheet says) and with Igus recommended aluminum rods. Still too much play. Plus, the aluminum rods are way too much flexible!

I read few times that Igus "bearings" does not slide very well. However, if you take the time to perfectly align the rods and be careful with the way you mount them, then it is not true. They were sliding as good as the original bearing, maybe even better! They are also very sensitive to their own alignment, they need a good solid housing. After few prints they start to slide a bit better, certainly due to their self-lubrication.

In conclusion, this is what I think about those bearings :

• Igus products are very good and interesting, just not for a "single" 8mm shaft mount style
• Igus bearings slide very well, they just need to be properly mounted
  
• RJ4JP are better than RJZM because less play but difference is very low
  
• Both bearings need a solid closed housing (not a 3D printed mount, tolerances and rigidity matters)
  
• With Igus bearing you have to use Igus rods but just not the aluminum ones
  
• Bearing mounts on Prusa Y carriage is a very very bad design, and even more for both RJ4JP and RJZM
• Prusa Y carriage needs 4 bearings to reduce play and vibration with Igus bearings
  
• Prusa X carriage with closed housing for bearing will be too bulky for me (and what about the weight?)
  
• Z axis does not need Igus bearing (less vibration and noise than X and Y)

This is my own conclusion and maybe I did something wrong with them because lots of people are very happy!

They slide very well but it is almost impossible to get them right on the Prusa.

In fact their rods are not smooth because they need to keeps plastic particles from the bearings (this is the self-lubrication things)!

 

Did not try them, it is clearly the best solution for plastic bearings (you can adjust properly the play). I would like to try them, but maybe after Hiwin/Misumi/IKO... because they are more complex to install. Igus technology is very awesome!

 

https://www.igus.com/wpck/17736/3Dprinting

As you can see, there is no Drylin R on their 3D printers (check videos)

 

btw, what your company is producing?

 

You shocked me (sorry... )

 

If you find something else than Misumi (in Europe they sells only if you are a company), then please share here. It will be very useful. I am going to try Motedis bearings with PTFE based oil (this is what Prusa support recommended me).

 

MK2.5 manual is out!
Original Prusa i3 MK2S to MK2.5 upgrade

We are going to get the new textile sleeve for heated bed cables, nice! As expected from the Prusa Github, the new RAMBo case is much better, specially for cable wear (I did a piece to solve this on MK2s : Prusa Rambo Extruder Cables Protector by pekcitron ). However, I was hopping to get 3 more holes on the heated bed to be able to use the new Y carriage of the MK3, it's has a better mount of the heated bed (but still very bad on bearings).

 

Be sure the day I will get a CNC I will mill a better Y carriage!

 

You are planing the house for the CNC machine, nice

I heard about good material for feet, I will try to find them again!

Some theory on how to use Igus : . Very interesting!

 

Yes the "design rules" is the interesting part of the video, all the rest is advertisement :-D

The things I am not sure to understand correctly with the 2:1 rule is the motor position. In this diagram :


the motor is on the right (corresponds drive force), floating in 1 and fixed bearing in 2. In the case of the Prusa, the motor is in the middle, not on the right. Does it change something? If not then Prusa Y carriage does not obey to 2:1 rule.

Yes I am thinking more and more of this Igus double W rail! The only problem is that the Y carriage is quite flexible, so not good to have the bearing too much in the middle.

Looking forward to see your printer working, hope I did not do too much mistakes

 

I recommend brim on some part to avoid warping : prusa_i3_bear_upgrade/print_settings.md at master · gregsaun/prusa_i3_bear_upgrade · GitHub . 4 or 5mm is enough.

You are right, my memory was wrong . I measured Y carriage, on MK2 there is 70mm between bearings and 85mm from bearing to center, same for MK3. Not bad

I heard that as well for linear rails. It is almost impossible to achieve on a MK2 frame, however, on MK3 it is possible. But linear rail on MK3 will cost more and might increase support questions and frustration...

With your asymmetrical design, you have to be careful to have V-slot wheel side at the same height as the Igus rail side. Might be difficult to achieve.

Yes that is the best ratio

 

Got this email from Prusa this morning :
"Your order with the reference ********* just had label created, your order is to be packed and shipped within a few days."

That is the MK2.5 upgrade \o/

 

Yes I know, but I do not want to wait. I would like to give you as soon as possible the confirmation that my kit works with MK2.5 upgrade kit. And as I would like to have both type of surfaces, then it is a better compromise as I will get a 10$ voucher for the powder coated steel sheet.