Belted Extruder V2. for 1.75mm Bowden by dintid

Last crawled date: 3 years ago

New edition now available: Belted Extruder v.3 for 1.75
This is my finished Belted Extruder (V2) for 1.75mm filament.
I have worked hard to make it wotk with flexibles as well. There is less than 1mm room between idler and filament-outlet hole when filament is loaded.
I have not tested it with flexible though, as I do not have any 1.75 flexibles on hand.
You do not have to open idler to load filament, which makes it very easy to change filament!This is replacement remix of my previous Universal Belted Extruder - Bowden and Direct, which I will no longer work on.
You can view it in 3D on Autodesk Fusion 360 site.
I removed the embedded version here as it really killed some phones and tablets.
Details
I use a 60-GT2 aluminium pulley to avoid inaccuracies and avoid wear and tear of printed gear. You can use a 80 tooth printed gear if you absolutely want higher gearing than 1:3.75
I use a 16-GT2 aluminium pulley for my small gear.
Gear ratio: 1:3.75
Silent running due to belt operation
Belt needed 168-172
A Nema 17 motor
Belt is tightened by tilting the motor
Strongly advice you to buy Hobbed Bolt from E3D
Push-Fitting used is 1/8 BSP (9,7-9.9 mm) or M6. Look at file names. The one without Push-Fitting size specifications is 1/8 BSP.
With 32 microstepping and normal 1.8 degree Nema, the steps are about 1100mm/s filament, so ultra high definition and high torque
Updates
Added a version for M6 Push-Fitting. I have made m6 threadding for the fittings. Tested fine at 0.2mm layer height.