Mandala Rose Works Mini OldHam Leadscrew Wobblers

The Mandala Rose Works Mini OldHam Leadscrew Wobblers support 16mm hole layouts for Anti-Backlash nuts.

The Mini Oldham were designed in order to allow use on certain printers such as the Jubilee and RatRig printers that didn’t have the room for the larger Oldhams.  They are intended to be used in conjunction with the machined arms and yokes we make for these printers.

So there is no need to replace your yokes, or even affect your alignment, simply bolt these in between your Anti-Backlash nut, and your yoke. The OldHam takes care of the rest for you. Mandala Rose Works designed these to work with 16mm anti-backlash nuts.

The OldHams are held together with silicone o-rings rated for 200C.

Note: These items ship with M3x8 socket cap head screws to hold on the anti-backlash nut and 4 of these screws come with each Oldham.

Installation of the Mandala Rose Works Mini OldHam Leadscrew Wobblers :

1. Remove the bed from the yokes or arms and set it down inside the printer. (Yes you may have to clean out the bottom of the printer. 🙂
2. Detach your Z Yoke from the Z slider making sure to hold on to the slider, and secure it with some masking tape so it does not slide off the rail. You do not want to repack bearings.
3. Loosen the coupler holding the leadscrew too the stepper motor.
4. Slide the leadscrew with attached Yoke and A/B Nut out of the printer.
5. Remove the o-rings from the Oldham using the provided tool. Put each side of the T under a part of the o-ring that has the little round cut-outs on it. Then push up and the T will push the o-ring off. Using fingernails can break the o-rings.
6. Install the Oldham with thru holes to the A/B nut
7. Reassemble the Oldham with the o-rings. You can use the tool and hook the o-ring on it and gently pull it up till the top of the o-ring holds onto the pin in the top of the Oldham. Angle the tool so it is flat with the top of the Oldham, and slide it out thereby seating the o-ring.
8. Attach the other side of the Oldham to the yoke. (See the 3rd image in the photo gallery).
9. Re-install your yoke and leadscrew into your printer.

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