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Bill of materials

Aluminum parts

The kit is no longer sold

The BLV Ender 3 Pro aluminum kit (all the CNC parts, screws and belts) is no longer available. The drawings are in the project files, and the full screw list is below.

BLV Ender 3 Pro aluminum parts Aluminum parts

General

Using the original Z endstop?

If you use the original Z endstop instead of a BLTouch or another leveling sensor, use this adapter for the Z endstop.

Rails

Two options:

  • Lower cost RDBB rails, about $14.6 each when the guide was written.
  • HIWIN rails, the highest quality option. They are also used by E3D. A single HIWIN rail sold locally for about $68.

Note

HIWIN rails should be tested with a load on the carriage.

MGN carriage warning

Hotend

A better hotend is a recommended upgrade. First decide between Bowden and direct drive.

Trianglelab DDE direct drive, 24V full set, a great system.

Its X carriage is very similar to the original Ender carriage. To install the DDE, drill two small holes for M3×6 mm screws in the carriage. It takes about 2 minutes (how).

Hotends Trianglelab

With the Trianglelab DDE, use the two screws for alignment only, then remove them.

Z axis

Choose a Z setup:

  1. Single Z stepper. It worked well for me for a while, but dual Z adds rigidity and greatly improves the Z axis.
  2. Dual Z with one stepper. A dual Z set with one stepper, 2 threaded rods and a belt. This BMG bracket recovers some of the lost Z height. Some height is still lost because the extruder touches the left top plate, but this became my favorite setup. Replace the Phillips screws that come with the set with hex socket head screws.
  3. Dual Z with two steppers. The recommended set for dual Z with a second Z motor. Align the Z axis so both sides match.

Dual Z, one stepper setup Dual Z, two steppers

Note

This method reduces the Z height, since the BMG can touch the top plates.

Screws

Screw list for the aluminum parts (15 items)
Qty Part
42 M3 8 mm hex socket head screw
8 M3 10 mm hex socket head screw
4 M3 14 mm hex socket head screw
2 M3 6 mm hex socket head screw
2 M3 6 mm hex flat countersink screw
2 M3 16 mm hex flat countersink screw
1 M3 20 mm hex flat countersink screw
4 M3 50 mm hex flat countersink screw
12 M5 8 mm hex button head screw
2 M4 40 mm hex button head screw
2 M4 Nyloc
5 M3 Nyloc
14 M3 0.5 mm washer
32 M3 T-nut
10 M5 T-nut

Only for dual Z:

Tools

Optional

Filaments I used