02 Probe Docks & Toolboard Mounts

A critical piece of Euclid Probe’s reliability is the captive dock for holding the probe when not in use.

Native probe mounts and docks were designed by, and have been extensively tested by Euclid’s designers on their own printers. Conversion and adapter mounts are also provided so users may retrofit their printer from other probes and devices to use Euclid Probe.

The modular building blocks provided below are meant to be integrated into users own printer and other CNC machine designs.

Notice: The mounts provided with a recess for a PCB were modeled with a 0.2mm margin all around, intended to provide a close fit. Recent feedback suggests that this is too tight and in some cases an interference fit is occurring. While we research this, we recommend that users check their slicer settings, especially any for ‘internal hole compensation.’ In all cases, the recessed version is accompanied by a non-recessed version and we recommended to use those if the recessed versions are unsatisfactory.

Users are encouraged to review their dock locations and consider deployment/retract operations. The preferred locations for the dock tend to be behind the toolhead or in the opposite corners from the locations of endstop switches. There is no single best place for retrofits. Homing macros may need to be adjusted to home one axis before another to avoid crashing into the dock, or flipping endstops to the opposite ends of their axis.

Recommend print settings for the mounts are either 0.2mm or 0.3mm layer heights, minimum of 3 perimeters, 20% infill of your choice, with either PC+ or ABS for higher heat resistance. Our test prints are made with a stock Creality Ender3-Pro, Superslicer using the default Ender3 profiles at with 0.28 Superdraft or 0.2 Normal settings using basic PLA filament (COEX Mystery PLA, Overture EcoPLA or Inland PLA spooless PLA+) .

Some models are provided with Print-In-Place supports inserted by the designers. Typically the supports are thin features (~0.45mm in thickness) and offset from the supported surfaces (~ 0.25mm). Typically these print at single width extrusions and easily tear away. These models are also provided without supports for those who prefer to model their own.

Reference dimensions are noted in the illustrations where applicable for users to develop the probe offsets for their firmware.

Please use the 3D Previews of the .stls’ by clicking on the icons. If you haver disabled java support, the preview may not display correctly.

How the docks work …

When the probe board is stowed in the dock it sits in a recess that is lower than the exit gate. In order to exit the dock, the probe has to be elevated to the proper height and then travel in an exact motion through the narrow gate to exit. The action of the magnets lifts the probe up in the dock so that it can exit.

If the toolboard and probe are not exactly aligned, the opposing polarities of the magnets pushes the probe boards into the well and it can not exit.

If the tool carriage passes near the dock, you may hear the probe move inside the dock, but due to gravity and the elevated exit gate, the probe can not escape.

The following .zip files includes .step and .DXF files of all the modular docks and mounts for CAD interchange.


Probe Docks

The modular probe dock is designed to be printed in the vertical orientation shown. The .stl’s available with and without Print-In-Place supports.
The shoulder that the PCB board bears against is a critical feature- it needs to be perpendicular to the base of the well to work effectively.


Toolboard Mounts

Modular toolboard mounts are provided with both M3 pilot holes for toolboard attachment and common M3 heatsert recesses.

The toolboard was designed to locate the clearance hole for the JST-XH socket far enough away from common sized M3 heatserts so that a reasonable wall thickness could be maintained in 3D printed mounts.

5015 Fan Mount

The 5015 Fan mount prints in 2 halves. Each half is different by design.
There is 1.5mm added clearance in the LeftP1.5 part for a sheet metal bracket if your printer uses one. If the sheet metal bracket is on the right, mirror both parts in your slicer.
The LeftV4 .stl has 0 side clearance.

The RightV4 .stl has 0 side clearance.
There are +5/-2mm vertical adjustment in the mount as shown.

There are +5/-2mm vertical adjustment in the mount as shown.

4020 Fan Mount

The 4020 fan mount prints in 2 halves. Each half is different by design.
There is 1.5mm added clearance in the Left part for a sheet metal bracket if your printer uses one. If the sheet metal bracket is on the right, mirror both parts in your slicer. If your printer does not have a sheet metal bracket, an M3 washer will take up the gap.
The Right .stl has 0 side clearance.
There are +5/-2mm vertical adjustment in the mount as shown.

Below are the conversion mounts desgined buy Euclid Probe’s team to replace other probe technologies on existing printers.

The BL Touch mounts are designed to be printed upside-down, with the top against the build plate (the stl previewer may render them in their upright orientation).
In the following render, the yellow items are the PIP supports to be removed after printing.

Two variations of the Fotek probe are designed- with Euclid Probe board aligned 0 degrees and 90 degrees relative to the probe mounting face.
The mounts are designed to be printed upside-down.

Native toolboard mounts and probe docks are under continuous development. The below native Euclid Probe mounts have been designed and provided by Euclid Probe developers. These mounts have been etensively tested on their own printers, by select printer designers and early adopters.

New dock mounts are continuously being designed and developed for other printers! Current work includes Tiny-M | Voron0- Mini Afterburner, Mini Railcore models.

The toolboard mount secures to the X-carriage plate and uses the top left roller screws and the M3 screw that secures the hotend fan cover to the plate. Due to the different production variations, a longer M3 screw may be required. An alternate version is also provided for those who do not want to loosed the roller screw and only uses the M3 shroud mount screws. A hole is provided to insert a length of filament hold the probe wires in place.

The probe dock is provided in 2 parts and designed to be hard mounted to the front left of the Y-carriage plate. The dock mount is designed to use either M4 coupling nut or 1/2″ diam x 1/2″ high nylon spacers to elevate the bed 15mm from the carrier. These spacers are commonly available at hardware stores and big box stores. Adjust the height of the dock as needed to compensate for the print bed materials. Thin cardboard or fibre washers will help insulate the spacers from the heated bed. The remaining bed leveling screws can remain as spring balanced posts.

Print out 2 of the spacer risers and use them under the right side bed mount screws.

A more solid installation if to install another spacer under the rear left bed mount at the cable-chain location without any risers.

Example M4 Coupling Nut

Example Big Box Store Nylon Spacer

Home Depot (Everbilt) Spacer   #10 Fiber Washer

Typical Hardware Store Fastener Drawer Bins Spacer

Post Spacer Detail

The mounting instructions and dock for the Ender5 are similar to the Ender3 above, with the exception that the toolboard mount has a cutout for the X-axis belt crimp, and the mount faces the front of the printer.
The dock keys into the corner clamp and hopefully reuses the M5 mounting screw and T-nut.

The Euclid Probe mounts and docks are hosted in the CroXY github repository- https://github.com/CroXY3D/CroXY CroXY Discord

Currently updating, check back soon!

RailCore native Y-carriage mounts are offered in 3 varieties:

  • 713 Maker Milled Aluminum Plate / Standard Printed Y-Carriage
  • MRW S/D plate
  • Petsfang cooling shroud mount.

The toolboard is attached to the mount with 2-M3x8 or M3X12 screws, either from above or below- drill & tap as needed.

The preferred RailCore dock is the 2-part version that mounts to the bottom of the rear extrusion. It is the shortest and therefore the stiffest dock and mount in the offerings. If no extra nuts were placed in the channel, then a number of different options exist:

  • Loosen the belts, remove a corner cube, pop new nuts in the channel and reassemble. It’s a simple yet tedious, 20 minute process. the most direct remedy.
  • Use a rotary tool with a burr to enlarge a section of the extrusion to pass a nut. It is advised that a vacuum be used in conjunction with the rotary tool to prevent chips from migrating into places they shouldnt.
  • Use the provided below drilling jig with either a 6mm or 1/4″ drill bit to spot a hole in the channel. The drill bit is angled 5 degrees to make drill access BEWARE: drilling the edge of the extrusion this way can bind the bit edges and cause strain in the drill. Uses M3 heatserts and M3 screws to expand the ears into the channel. The Print in Place supports should be severed with a hobby/craft knife to release the ears so they can snap into the channel.

The other alternative is the clip-on dock mount has been designed to snap onto the back left vertical extrusion and provides for adjustment in X & Y (Z being achieved by sliding the mount up and down). The clamp uses 3-M3X10 screws through the face of the bracket into M3 heatserts set in the back. The L-shaped adjuster and dock attaches to the mount with an M3x12 draw-bolts and nuts. We recommend that the dock get positioned as close as possible to the vertical extrusion.




EVA carriage mount bracket and front cross rail mounted dock have been modeled and proof printed. They have been submitted to EVA contrib-users and a pull request has been made.

Print the dock on the back face with the dock arms pointed up. The print in place supports should tear away from the back chamfer and reveal a hex shaped bore to install the M5x20 screw and T-nut for the slot. The alignment bosses are sized for an 8mm slot width.
The EVA carriage mounts was proportioned for Duct V2.1 Straight. It has recessed for nuts to attach the toolboard from the underside. Use M3x10 buttonhead, or countersink the PCB for M3X10 flat head screws.


Existing Voron 2.4’s can utilize the Fotek converstion mount or the modified AfterBurner shells offered below which locate the toolboard in the same location as the inductive probe.

Github user v6cl posted a video to Youtube that we came across and were impressed by their deployment. They designed a ‘skinny mount’ to open up the cooling vents in the toolhead.

The Voron 2.4 probe dock is designed to attach to the side of the 2020 bedrail extrusion. The mount has vertical slots to provide for fine adjustments in elevation. Depending on the bed material and print surface, this mount may bottom out against the floor of the printer.

PArtial view of Voron Bed Rail Mount

The bed rail mount for the Voron Trident has pilot holes for M3 adjusters to adjust the altitude of the mount. The M5 holes have bridge discs in the holes that need to be drilled out before use. Depending on the bed material and print surface, this mount may bottom out against the floor of the printer.

Frame mounted Voron Trident Mount
This version of the Voron Trident mount was collaboratively developed with Trident users to be located at the left-rear motor mount. It requires the replacing the motor mount screws to M5x20 and utilizes an M5x16 screw and nut to connect the dock to the mount. There is a keyhole to insert the nut into the adjustment channel.

Currently updating, check back soon!

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