This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
This is an extruder design specifically for the BLV Cube, with a branch modified for the BLV metal carrier upgrade. Key design concepts that drove the design direction were the following:
Implement a geared reduction drive to allow for a smaller and lighter stepper motor, that offsets the motor's lower torque with the torque increase of a planetary drive system, combined with a helical gear ratio to reach a final ratio of 12:1
Utilize a BLTouch as the z-axis prober.
Allow for multiple hotend types by basing attachments via a simple adapter plate and parts cooler nozzle change. Allow swaps with a couple of screws/bolts.
Electronics support to be integrated into the shell carrier.
A future release will be more universal with a blank backplate for modification to adapt to other carrier/printer needs.
If you wish to look around in a web browser, here are some links.
Integrated Version : https://a360.co/2Vma0a4
Metal/universal version : https://a360.co/36IUueP
Thanks to a fellow BLV owner that's building a metal carrier version with the toolboard, there was an additional tweak necessary if people were to use the experimental belt retainers that come with the metal kit. It also needed fixing...
I still plan on doing another update that has the installation/construction sequence to make it easier for people to assemble the extruder.
Thanks to a fellow BLV owner that's building a metal carrier version with the toolboard, I found a few errors that needed fixing...
Added a new blower frame for the metal carrier to accommodate the Duet Toolboard up to board version 1.0 (current as of this update).
I added new adapters; one specifically for the for the metal carrier variation, to accommodate the Mosquito (air-cooled) and the other for the Dragon hotend from TriangleLabs. The Dragon Adapter is complete for both the integrated and metal carriers.
I plan on doing an update soon that has the installation/construction sequence to make it easier for people to assemble things :p.
The project has been printed and tested, with a few minor tweaks. I'm formally calling it the EdP-Drive, or "P-Drive" if you wish. I also have released this under a new licensing terms, to allow for community development, and open to commercial USE. I would as anyone that utilizes this design, extend the courtesy of proper credits for the work and expense put into bringing this work to the community. Thanks.
Non-Printed Parts List
Extruder Motor
Type Manufacturer Part No.
NEMA11 Moons Industries MS11HS1P4100
Source : Moons Industries
Link : https://www.moonsindustries.com/p/nema-11-standard-hybrid-stepper-motors/ms11hs1p4100-000004611110015846
Bearings
Type Quantity Use/Purpose
B695ZZ one (1) Motor spindle support
B676ZZ three (3) Planetary gears
MR148ZZ three (3) Planetary carrier and driven sun gear drive support
Source : Misumi, Amazon
Misumi : https://us.misumi-ec.com/vona2/detail/110300107560/?HissuCode=B695ZZ&PNSearch=B695ZZ&searchFlow=results2type&KWSearch=B695zz
Misumi : https://us.misumi-ec.com/vona2/detail/110300107560/?HissuCode=B676ZZ&PNSearch=B676ZZ&searchFlow=results2type&KWSearch=B676ZZ
Amazon : https://www.amazon.com/uxcell-MR148ZZ-Groove-Bearings-Shielded/dp/B082PPPSPT/ref=sr_1_3?dchild=1&keywords=MR148zz&qid=1606114609&sr=8-3
Hobbed Gears
Type Quantity Detail
BondTech Drive Gears one (1) 1.75mm Filament, 8mm Shaft size
Source : Filastruder
Link : https://www.filastruder.com/collections/bondtech/products/drivegear-kit?variant=12119193124935
Clamp Thumbscrew Tensioner
Type Quantity
BondTech Thumbscrew Tensioner one (1)
Source : Filastruder
Link : https://www.filastruder.com/collections/bondtech/products/bondtech-thumbscrew-assembly
Optical Endstop
Type Quantity Manufacturer
Optical one (1) Lerdge
Source: Amazon
Link: https://www.amazon.com/Printer-Accessories-Optical-Tachometer-Photoelectric/dp/B088P3TPCB
alternate: https://www.amazon.com/MakerHawk-Optical-Endstop-Photoelectric-Control/dp/B07PMW2QMT/ref=sr_1_2?dchild=1&keywords=large+end+stop+optical&qid=1606115247&s=industrial&sr=1-2
Fan
Type Quantity Detail
5015 one (1) 12v Dual ball bearing
Source : Amazon
Link : https://www.amazon.com/WINSINN-Bearing-50x15mm-Turbine-Brushless/dp/B07WFJV28K/ref=sr_1_5?dchild=1&keywords=5015+winsinn&qid=1606120419&refinements=p_85%3A2470955011&rnid=2470954011&rps=1&sr=8-5
BLTouch offset values for listed adapters:
The default x,y offsets are x=-25, y=0 unless noted otherwise.
Current adaptors using this default are as follows:
Slice Engineering Mosquito standard
Slice Engineering Copperhead
E3D V6
Nova
Unique offsets are as follows:
Mosquito Liquid : x=0, y=-20
Configuring steps/mm
Since the extruder utilizes gear reduction to 12:1 to increase torque, the steps/mm need to be adjusted. Based on a 0.8degree motor, it is recommended the base value be set to 1299.
The standard method of calibrating extruder steps is recommended to fine tune this value to suit your machine.