Belted Extruder V.3 for 2.85mm by dintid

Last crawled date: 3 years ago

Belted Extruder V.3 for 2.85mm
This is the 2.85mm version of my Belted Extruder v.3 for 1.75.
Please note that I've published a Belted Extruder v4 - 2.85mm / 3mm.
Brackets etc.
Everything for my Belted Extruders, including Mounting brackets can be found in the my Collection: Belted Extruders by Dintid.
Notes: I removed the 3mm from the name as it is naitively too tight to use 3mm filaments. (all E3D 3mm is really 2.85mm).
You can enlarge the center conduit using a small metal-drill by hand if you want to use it for 3mm filaments.
You do not have to open idler to load filament, which makes it very easy to change filament!
Silent running due to belt operation
Higher accuracy and longelevity due to aluminium gears instead of printed gears.
Build in mount points on 3 sides. Compatible with standard Nema 17 brackets - 31mm mount hole distance from center to center.
I have printed a lot of Ninja-Flex SemiFlex and it works super nicely
Details
I use a 60-GT2 aluminium pulley to avoid inaccuracies and avoid wear and tear of printed gear.
I am using a 16-GT2 Pulley for my small gear, which gives a ratio of 1:3.75
If you use a 20-GT2 Pulley for small gear you get ratio 1:3
Belt needed 172-180
A Nema 17 motor - I use a standard Nema 17 with a bit over 4kg holding torque.
Belt is tightened by sliding motor away.
Strongly advice you to buy Hobbed Bolt from E3D
Using the Ultimaker 2 Bowden Couplers - can be found for cheap on Aliexpress and similar - buy extras as they do wear down eventually.
With 32 microstepping and normal 1.8 degree Nema, the steps are about 1100mm/s filament, so ultra high definition and high torque
BOM
60GT-2 Pulley
16GT-2 or 20GT-2 Pulley
E3D Hobbed Bolt - Hobb-Goblin-8mm-Shaft
A belt with length between: 172-GT2 to 180-GT2.
2x Ultimaker 2 Bowden Couplers
Your Bowden tube must be OD 6.4mm to fit the above Couplers. I am using E3D bowden tube - NOTE that E3D's "3mm standard" is in fact 2.85mm and you can not use real 3mm bought from other places.
2x 20mm steel springs. 1mm thick
2x m3 50mm (or longer) Partially Threaded Socket Head Cap screws
3x 608 bearings. 8x22x7 - Type doesn't matter.
Various m3 nuts, screws and spacers
I have created some brackets for usage with my Belted Extruders fit for most surfaces, including 2020 profiles.
Brackets for my Extruders
I've made a Collection named Belted Extruders by Dintid where all my items related to my Belted Extruders is going to be added.
Please let me know if you need a special bracket.