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some new designs

Has anyone tried using heat or flame to evaporate moisture from the clay as it is being extruded to make the clay stiffer, more rigid, less likely to droop? Could this act as a cooling fan does for PLA in FFD printers to improve overhangs and bridging?

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Figured I'd post this in a couple of places.
I've been developing a gearbox for a new extruder. Are there any good hacks for bushings/bearings?

Things I've tried:
1. Commercial sealed bearings- expensive and don't come in the small sizes I need 1-2mm (1/16" or so) dia.
2. Pop rivets- provide both axle and bushing, but lack a good axial retention method.
3. Screws (+washers & lock nuts) - provide good retention, but need a bushing to prevent wear on gear holes.
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9/18/17
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Hi, guys!
One general question. I'm designing a desktop clay printer and use a compressed air to deliver the clay. What is the good diameter of the tube delivering clay to the extruder (at pressure 3-4 bar)? Now i use the tube with internal diameter 12 mm and length 35 cm. Works fine, but maybe internal diameter can be smaller.
Second question. )
Are those pneumatic connectors for tubes (as in WASP extruder) safe? To connect tubes with water and other liquids there are normally used different connectors with thread and nut, but they drastically increase hydrodynamic resistance of the whole system, and I'm not too happy with them.

Working with clay has, throughout history, been pursued via hand building, wheel throwing, and moulding. Those techniques all go back thousands of years. Does 3D Printing in clay represent a distinct and new "4th method" of shaping clay?
If so, is the addition of clay printing to the old list of forming methods a significant event in the history of human interaction with this material?
. . . Or is the advent of 3d printing in clay simply an incremental enlargement of an existing technique, such as coil building?
Many generations from now, how will the introduction of clay printing be remembered in the context of Art, Craft, and Design production? As a profound inflection point in the long history of the material? Or as one of a million little things, like the introduction of CAD software in the 20th century, that allowed for a limited amount of new form language to enter the material's "lexicon"?

(Many thanks in advance to anyone willing to share thoughts on this)

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Hi Friends my printer is already moving perfect, just I need to solve a few errors, I hope you guys can help me!

1.- After printing, the "Y" axis set to 0 and is the only axis that moves home.

2.- When I move some axis with g-code, these move very slowly, but if I print or send all the axis home, they move perfectly.

3 .- When i print a circular figure, the printer detects it well and prints it, but Repetier shows a totally different figure.

4.- When I put a stl to Repeater, it does not detect the center well, it detects it as well =

xxx
xxx
oxx

When this should be so

xxx
xox
xxx

5.-Finally, when I printing, the lcd screen looks well at the amount the axis has moved, but the "X" and "Y" axis does not display numbers, shows symbols and rare things.

I put some videos of how it has been working, I hope you can help me, I'm really happy for your help.

One more thing.
I think maybe I should define well the degrees of separation of the towers and #define _z_probe _offset but I have no idea how do it.
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18/9/17
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Hi, I am very beginner to 3d world. Just finished setting up my delta rep rap and working good with ABS. Now time to start moving towards clay printing. any link I can use to find the building instruction and parts I need to buy?
thanks for help.

Hi guys,

I have been looking to build Jonathan Keep's Delta cermaics printer in Birmingham, UK. I have never tried anything like this before and I have seen that other models have posted as remixes or alternatives to the Keep Delta. As someone with no experience of making 3D printer would you recommend builing one from scratch, or ordering something akin to the +ANYCUBIC 3D​ mentioned (or a UK version) or look at building the more recent remix made by +Bryan Czibesz​?

Many thanks,

Laurie.

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It's been just about two years since my first post on here. I thought I'd post an image of a partial collection of custom printed and milled parts I've designed for clay printing. Presently I'm not incorporating any of these in my current design. . . . iterate, iterate, iterate . . ..
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9/11/17
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Hey there everyone,

I have some questions about the delta printer extrusion process. I am having difficulty finding a consistency with the wetness of clay, the proper flow of clay and proper air pressure. I know this is probably easier done in person than over email but I'm wondering, for those who use Jonathan Keep's version of the printer, how to find a happy medium of clay / printing. I feel like there are so many variables working at once...speed of print, etc. that its hard to know what to 'control'. Is this as aspect of difficulty you have experienced? Sometimes even when I have turned the air pressure off the flow of clay still extrudes; or I make a micro adjustment to the air pressure and the rate of extrusion goes from a simple flow to an extreme rate and ruins the print. I have included photos in my email so you can see our set up here at RISD.

I also wanted to ask about more technically advanced 3d clay printers, are there others on the market that can be recommended? Does anyone use a small pug mill version w/ hose directly attached to the print nozzle?

Thank you!

Dove
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