Nema 17 direct extruder block for my 2nd Eventorbot build.
I didn’t get the full kit, so had to design my own extruder block to use a standard stepper motor. This one is laser cut and seems to work well.
Now to get the fan and PWM sorted to get some better PLA prints…
Uploaded:
Nice, are you going to share the plans for the extruder?
There are a couple of kinks I need to iron out (the pink block for example) then I’ll put it onto thingiverse.
Nice to see another eventorbot builder. That’s a pretty nice extruder, as I’m sure you’ve felt the sting of the stock extruder. I have a minimalist extruder waiting to be installed into mine, I just need to get around to making the mounting bracket for the Bowden. That is one enormous spool you got there. I bought a 3 lb spoil and unfortunately is was a large diameter instead of length, so it hits the extruder. I finally got my hands on an empty small spool so I’ll end up transferring to that.
Have you been able to print abs yet? I haven’t tried yet.
Also, how are you handling y axis stability?
@Eric_Moy I haven’t printed ABS on this one, but my other one prints ABS very well, so I don’t expect too many issues.
I warned Duy about the Y-Axis in the very early stages, and it seems it still isn’t great. Reducing the acceleration and making sure everything is tight gives reasonable results though.
I created an ‘O’ version of the Eventorbot in November last year to work around the “wobble”:
http://www2.artaylor.co.uk/eventorbot.html
Whats the deal with the Eventorbot? Is the creator still active or is this another failed kickstarer?
@Shachar_Weis I’m not sure how active the creator is anymore, I know the campaign was a large undertaking than he expected.
@Richard_Taylor I’ve also reduced my accelerations considerably, but sometimes slicer gets squirrelly and ups the accelerations and speeds my settings.
I’ve got 2 options to stabilize, 1 do an o design with a simple piece of aluminum angles and ball bearing riders, or putting nylon sliding shims between the bed arm and the walls of the z axis (known as Wiz’s stability mod in the eventorbot forums).
What are you using to heat your bed? As built, my bed can only get into the 70s C.
Edit
Just read your blog, nice work. Think you might agree that after building the eventorbot, one winners whether to keep reeking it, out just build a different bot…
@Eric_Moy in the O configuration it is a pretty good printer. My only gripe is the Bowden setup.
I’m using a standard 200mm x 200mm hot bed and it easily hits 105 C. I’m also going to reduce the size of the bed to match - that will help with the Y wobble.
You can force the max acceleration in firmware (eeprom or code), which should help. There’s no substitute for mechanical stability though.
My O version uses 2500mm/s/s and feed rates of 80mm/s with minimal ripple on perimeters.
I like your idea of a passive O support. I think that would be a good solid option.
