Keith Davis published a new build:

Read more about this build...

 

YES they do. The pancake looks good in all of their promotional pictures, but in the small print it turns out they wouldn't use a puny pancake motor on their own printer. But with the 40mm motor that extruder has the same weight and performance of a 5 year old Wade/Greg getup. Yes it looks better than that old printed gear getup, but that $100 price tag is strictly for looks. One would be better off using a 35mm motor on a Titan Aero as it is lighter than a 40mm and still gives plenty of power to push even 3mm filament through a 1.0 volcano nozzle at high speed. But only the 35mm motor from Robotdiigg, which is 200gm while all other 35s are 230gm.

 

The slot that the spring and screw fit into is the width of the nut, that prevents the nut from turning.

 

As you tighten the wing screw the nut does move up, compressing the spring. Since the wing screw remains stationary against the bottom of the slot, that compression increases tension against the lever arm.

 

Andrew
I'm reworking the extruder at this point. I plan to publish a rework next week. You should be able to import the STL files into Solidworks, right?

 

I could save each part as a png, then with ms paint you could 'print' them to a pdf.

 

Printing the rework now. Should be proofed out next week.

I take it you are working on a class project, sort of a 'how does it work, why does it work' assignment. If that's the case, and I fall behind on the rework, what if I just end up doing pngs of all the original parts?

 

Yes, only change is to 3d printed parts. Problem was that the idler bearing eventually gets cocked to an angle pushing the filament unevenly on the drive gear groove. The only hardware change is the drive shaft across the top is now 5mm longer than it needs to be, no big deal it can stick out that much.

 

Here's a plan for you:
Download and install

Sketchup Make Download SketchUp

It is a free program (I used it to design the Vulcan). Although Sketchup Make is free, it is supported by a billion dollar company. Their Sketchup Pro is an industry standard for the home building industry. Make is supported by a large community through Sketchucation and Youtube channels. Their Sketchup Warehouse contains more than a million parts submitted by their user base which can be imported directly into a project. Because of all that Sketchup is rapidly becoming the standard for this kind of CAD design work.

Then, download http://3dwrx.com/vulcan/assembed.skp

Open the assembled.skp in Sketchup Make.
That is the fully assembled Vulcan Maxtruder current version. It is fully assembled so you can see how it all fits together. All printed parts and hardware parts are there. You can copy any part, open a second instance of Sketchup and paste that part in that instance, then use Sketchup's File>Export>2D Image to create a PNG of the part. You can rotate parts any way you want for that image, or even use multiple parts for an image that shows them in an exploded relationship view. Using MS Paint you can then "Print" the PNG as a PDF.

Also, consult Assembly Vulcan Maxtrudr Index for a detailed tutorial on assembling a current version Vulcan. Feel free to use any of the images or explanations in your assignment that can fit your purpose.

 

http://3dwrx.com/vulcan/assembled.skp

 

NEW VERSION





This version is much easier to assemble. The idler lever holds the bearing in the center of the two-part lever, ensuring that the bearing remains square with the drive gear. The rear body is mounted directly to the rear of the motor instead of being mounted to the top cross-span, giving the entire extruder greater stability. There are 3 semi-circles that are inserts to hold 2 M5 & 1 M3 nut into recesses in the main body for assembly.

A fully assembled Sketchup file (with screws etc) is at
http://3dwrx.com/vulcan/master.skp
A STL file with the above parts is at
http://3dwrx.com/vulcan/unassembled.stl

The BOM:

4- m3x10mm button head screws
3- m3x25mm socket head screws
3- m3 nuts
3- m5 nuts
2- m3x35mm socket head screws
2- m5x25mm srews
1- 5mm dia fender washer
1- m5x40mm wing screw
1- m5x15 screw
1- m5x85 shaft (threaded rod)

 

Sounds awesome!!
Please post that project in the Projects section here. I just may be interested. That sounds like a great project for a high school tech class. It would kill a few birds with one build.

 

They are in http://3dwrx.com/vulcan/master.skp They are white, not red.

When M5 & M3 nuts are pushed into the backside recesses of the main body piece, these bushings are pushed in to hold those nuts in place during assembly. They are sized to remain in the recesses.