This product is milled upon ordering. 

Once ordered, please allow 4-5 working days prior to shipping.

This bolt on, full metal, high temperature, Z axis magnetic compensator attaches to your existing Z axis assembly (yoke) and compensates for errors that are introduced by a bent or warped lead screw (lead screw induced Z banding). It bolts onto the bottom of the stock, 3D printed, or metal Z axis yokes and adds magnetic compensation for lead screw wobble while minimizing the loss of Z height (~8mm).  This product reduces the ability of the lead screw to impart artifacts to the build platform by compensating for warped or mildly miss-aligned lead screw in a high temperature printing environment (up to 150 deg C).  All pieces are made out of high strength 7075 T6 aluminum. We have leveraged the properties of 7075 aluminum to allow us to more freedom in the design aesthetic while still maintaining the needed strength in our parts. 

This product is inspired by several sources including the HevORT wobble rings and its many derivatives.

Each magnetic compensation unit consists of 3 milled 7075 pieces, high strength / high temperature neodymium magnets, metal rods, and bearing balls. Each of the 3 pieces will come with pre-installed high temperature magnets (up to 150 deg C) and metal rods and comes ready to bolt onto your lead screws.  This product ONLY works for a configuration where the lead screw nuts are mounted below the bed.

The top and bottom pieces are interchangeable.  They each contain 4 M3 form threaded holes and 4 M3 pass thru holes on the flange so they are compatible with either threaded or non-threaded lead screw nuts.  The top piece will bolt to the bottom of your bed / Z axis lifting assembly (yoke) (screws not included).  The bottom piece will bolt to the bottom of the lead screw nut with the included x4 M3 8mm button head screws.  The top and bottom pieces will "sandwich" the middle piece (that surrounds your lead screw nut).  The embedded magnets, rods, and ball bearings on each piece provide the magnetic compensation action.  

The middle piece is uniquely designed to encase your lead screw nut.  While the height of this product is 37mm, by incorporating the lead screw nut within the center of the middle piece itself, this total loss includes the height of the lead screw nut as well (of 27mm - 29mm depending on the brand of anti-backlash lead screw nut used).  This means that you are only adding an additional 8mm to the total Z height lost by using this clever product vs. using a 27mm - 29mm bottom mounted lead screw nut alone.

Please note:  The pieces of each unit are designed to fit both the Zyltech and LDO brand, small, Delrin anti-backlash lead screw nuts with either threaded or non-threaded mounting holes.  This product is also compatible with any small brass or Delrin (regular or anti backlash) lead screw nuts with a 16mm bolt pattern configuration and 22mm flange diameter.  Please note that this product is not compatible with large Delrin nuts (those with a 30mm flange).

The unique design of this product does not require any lubrication and naturally has very low friction (due to minimal contact area between the ball bearings and metal rods).  The use of ball bearings and metal rods allows only lateral movement while prohibiting rotational movement entirely.  This ensures that this product does not induce any additional backlash into the system during high speed (Z-axis) maneuvers.  All parts of this product are made of metal, and are ideal for a high temperature environment (up to 150 deg C) and there are no breakable or melt-able parts.

Please note: Normal lead screw lubrication is still required.

This product is sold in units of 2, 3, or 4. (1 unit per axis)

Each high temp magnetic compensator unit includes:

x1 top piece (comes with magnets and metal rods fully installed)

x1 middle piece (comes with magnets and metal rods fully installed)

x1 bottom piece (comes with magnets and metal rods fully installed)

x5 ball bearings (4 + 1 extra, in case of loss...they are tiny little buggers)

x4 M3 8mm button head screws (to mount lead screw nut to the bottom piece)

Not included:

Screws for attaching your bed / Z axis lifting assembly (yoke) to this product.  This product is universal in nature and fits a wide variety of printers (see "Compatibiltiy" section below) , therefore we cannot predict what type and length of screws are necessary for every individual mounting solution.  Please refer to the instructions tab for additional screw selection guidance.

Compatibility:

These magnetic compensator units are approx 37mm tall and approx 38.5mm in total diameter, and utilize a standard 16mm bolt pattern, therefore they are fully compatible with all printers that allow for at least 20mm radius of clearance around their lead screws, including the RailCore II series of printers, however due to the shape of this product there are some allowances for smaller clearances.  Please see the instructions tab for additional information and measurements.

This product ONLY works for a configuration where the lead screw nuts are mounted below the bed.

Please refer to instructions tab for additional information.

Coming soon:

Instructions tab