Thingiverse "Threadless Ballscrew" - Customizable (level 2 - Techie) (Page 3 of 3)

+1 to Hazer Good suggestions. I made a 608ZZ bearing holder a while back for the old threaded rod. I am sure that it would work for this situation also.

http://2n2r5.com/pictures/printer/show- … venter.stl

You might also want to make sure you don't have any wobble in the carriages. I know a few of us had some slop when we switched to the new carriages. U-mold jammed around the bearing helped a lot. It's weird that your M5 period seems to be about the same as the threadless ballscrew. I have no idea what to make of that.

Is it easy to remove that nut that was originally on the aluminum bed for the threaded rod? or did you have to drill it out?

Ok, I'll be working on mine the next two days. I will be using the stock stepper and driver. How do I calculate the steps per MM?

I'm going to apply this in a few weeks. How do you remove the threaded rod from the stepper motor?

I've just installed this, and it seems to be working. I'll show off my comparison prints as soon as I can.

I'm getting a lot of slipping on the return trip (raising the bed). I've been using my hand to offset the weight of the bed. Any advice to automate it?

I think you can post pictures after 5 posts maybe it's 10.  Either way just submit a few more posts until it allows you to post pictures.

I just installed this into my HBOT using 2n2r5s original STL. Its nice. There is no discernible backlash and moves sweet. I dont see any banding or wobble.

I do have one problem. When the bed moves up, it slips. Alot. I have everything as tight as it will get, and the bearings themselves still rotate, but there are little 'stutters' and the bed does not move up for a partial rotation. As far as printing goes, no harm as homing is not effected and the downward movement stays tight. It does mean that I will not be able to install auto bed leveling. I was going to measure the reverse steps/mm and use the new directional thing in Marlin to compensate, but if the system is slipping at all, this will all be worthless.

So, has anyone else had slipping? is it due to how much weight I have on the bed, or the fact that the part is printed (vs an aluminum one made for this)?

In an upwards direction you will always get slippage and different movement rates than downwards. It's an inherent issue with this setup. You can limit it to various extents but you will not eliminate it. The reasons have been discussed extensively in this thread.

That is awesome! I monitor this thread. I still use this on my printer. Every 6 months or so, I switch to a freshly printed body to mitigate fatigue issues. I'm glad that you are sharing the same success. Thanks for posting!

What do you speak of? I see no double post.

{{quickly deletes extra post}}

http://www.thingiverse.com/thing:112718 is where I saw it. It is not my original idea. I just made a script and produced versions that could be used on solidoodles.