It looks great. I can't wait to see it.

I wonder how using 2 lead screws for the axis is going to work out. Could it rock front or back. Or even get jammed.

I'll be following this

 

What made you go for a moving gantry as Z instead of the build plate? Wouldn't this require longer bowden tubes so it can move up and down with the gantry? And wiring seems a little more work too, since motors, end stops, extruder, etc. have to move up and down with it?

I love to see all the different builds on here. It helps to think about different options and their possible pros and cons while figuring out what I'd do for a build.

 

Hm. I thought it's the relative movement between the hot end and the build plate. If the build plate is fixed, but the hot end vibrates with movement, don't you still get ghosting?

 

Hm. I thought ghosting happens when there's unwanted movement between the place the plastic comes out and the place where it's supposed to go.

So if your build plate with the object is absolutely static, but the gantry itself (or the frame further up) starts to oscillate with too high acceleration values for example, you will still get ghosting, won't you? Or if the belt allows stretching / contracting on sudden movement changes.

 

Re your point 4 - What software are you using?

 

Wouldn't your firmware really control point number 4. I am excited to see how this comes out. I guess you got your jamming issues straightened out. I think that moving the gantry is definitely the way to go with large format printers. Ryan Carlyle has been tinkereing with a core xyz using 4 steppers and a mile of specra, he also built a delta out of a few square frames, one of which shares a name with yours.

What controller are you using?

 

How is this coming along? I would love to see some pics. I am about to do a 200mm^3 bot for a buddy, this would be quite nice setup for it. I might add a leadscrew, I like odd numbers.

 

Please see reprap wiki page Bateson for more on my use of Tesseract.

Let's see..upload image.

Cheers,
Doug

 

(laughs), yes, it stores 24 reels nicely--you could put doors on it to protect the humidity.
Bateson is a cable drive right now with prospects of rapid wear but that's the way the degrees of freedom came out for self-replication: the motion axes had to be integrated into the frame.
Tesseracts are hugely stiff and light. How odd that they have *four* planes at mutual right angles. Like people say, do they come from another dimension? To build one the miter angle on that web is 33.6 degrees--you can get it with trig and square roots.
My landlord/GF got a miter saw to miter the floor molding the...quarter-round. I inherited it. I've set it to 33.5 degrees. Close as I could get. I figure if I get some round dowels, lay out 3 lines at 120 degrees, evenly spaced circles at one inch, I could screw one together in wood to get an idea of how they fit up, whether they frustrate themselves with impossible tolerances or not.
My first attempt at self-replicating milling machines was 1997. It was based on a drill press. My second just might be that machine updated, in a tesseract frame. You see, when you run the head up for large work, a drill press gets real floppy. A framed press gets stiffer. How neat. Julian Leland framed his self-replicating milling machine in a tetrahedral steel tube frame at Swarthmore.
I am really encouraged to see people running with the idea of the diagonals of the cube and the delta geometry and the alternatives to XYZ.

Why was your Z-axis too heavy?
...Another view

Cheers,
Doug

 

Where are the photos?

 

why loud?
wait, was it the 8825 drivers? i keep hearing bad things

 

Hi, really like the second design you showed in 2019. Did you ever build it? How did it perform? Also would you be open to sharing the Step file of the assembly? I am working on my own and looking for inspiration (although mine will have 3030 frame. Cheers

 

Love the name