Bigtreetech BTT EBB36 GEN2 Orbiter v2 A4T toolhead mount

EBB36 GEN2 Mount for A4T Toolhead with Orbiter v2 / v2.5

Mount for installing a Bigtreetech BTT EBB36 GEN2 toolhead board on an A4T toolhead using an Orbiter v2 / v2.5 extruder.

This is a remix of the original A4T THB mount from Armchair Heavy Industries. The original model was used mainly to get the hole pattern and part of the shape right, then modified to fit the EBB36 GEN2 board and the Orbiter v2–2.5 extruder setup on the A4T toolhead.

Features

Designed specifically for A4T toolhead + Orbiter v2 / v2.5 combo.

Mounting pattern adapted for BTT EBB36 GEN2.

Keeps board connectors accessible for easier wiring and maintenance.

Uses the same toolhead mounting points/orbiter screw locations (no special hardware on the toolhead side required).

Geometry adjusted to clear the Orbiter body, cabling and typical cable chain routing.

Printing recommendations

Material: ABS / ASA / PC(-CF) or similar heat‑resistant filament (recommended for higher temperatures around the toolhead).

Layer height: ~0.2 mm

Walls / infill: 3–4 perimeters, ~30–40% infill

Orientation: Print flat on the back side, no supports needed if oriented correctly.

Hardware

2× M3 spacers, 20 mm long (female–female, M3 thread on both sides)

2× M3 screws for attaching the printed mount to the spacers

2× M3 heat inserts for the board mounting holes in the mount

2× M3 screws for mounting the BTT EBB36 GEN2 board to the mount

Assembly

Heat up and press the two M3 heat inserts into the dedicated holes in the printed mount

Use the existing M3 screws on the Orbiter to attach 20mm spacers

Place the printed EBB36 GEN2 mount onto the free ends of the spacers and secure it with the two additional M3 screws.

Align the BTT EBB36 GEN2 board with the heat inserts and fasten it to the mount using M3 screws.

Credits

Original A4T mount by Armchair Heavy Industries:
https://github.com/Armchair-Heavy-Industries/A4T

Shoutout to @AlphaAnt for the EBB36 GEN2 v1 3D model used as a reference:
https://www.printables.com/model/1468767-ebb36-gen2-v10-mockup/files

If you remix this further (different extruder, additional strain relief, alternate board, etc.), please link back to this model and to the original A4T repo.