The Scara Road Runner

[3DPotter]

https://www.youtube.com/watch?v=BnsA2Ix4CfQ

Here is our teaser video for the Scara Road Runner. It will mainly be used for 3D printing cement with a 1in nozzle from a continuous flow system.

It is using a Duet 2 WiFi, all motors are being run off the expansion pin slot.

We will be printing with material soon, just a few more things to work out. The print area shape will be an elliptical oval that has straight edges on top and bottom of the oval from a top down view. It can do continuous 360 degree rotation.

[T3P3Tony]

@3dpotter Missed this when you posted it, Looking very cool!

[3DPotter]

Here it is in action!
https://youtu.be/57DWYw5pkn4

[3DPotter]

It got bigger.

https://youtube.com/shorts/kuDXX552dMU

[JoergS5]

@3dpotter looks great, like my next house by the lake

I am wondering which system you're using, from your homepage "Most clay printers use a pressurized system using compressed air, with a 3D Potterbot a high-pressure system is not needed." If it is not secret, you you tell me which technology are you using? Is it a peristaltic pump? If it's a tube, how do you refill?

I'm asking because I think about building a 3D printer with stationary hotend and using recycled material as pellets instead of filament. I need an idea how to get a controlled flow of the melted material without a solid material on top, which pressures.

[00Haze]

The Sara Road Runner looks amazing! Well done!

I have a question how did you set up the RepRapFirmware for the serial SCARA with the road runner style gantry? I have a serial scara 3d printer running it off a Duet 3 Mini 5+ the M669 code was quite simple to set up, but I would also like to add a road runner gantry as you have done, how do I manipulate the M669 code for a set up like this? Many thanks, Marc

[o_lampe]

@00Haze said in The Scara Road Runner:

how do I manipulate the M669 code

You type "M669" in your DWC console. The answer will be the current kinematic matrix.
Now you have to add the linear axis of the roadrunner to it.
Example:

; before
X1:0:0

; adding axis U
X1:0:0:1

You have to keep the original X driver in the matrix, but you can set M92 X0 to take it out of the equation.

[00Haze]

Thank you o_lampe. I will give that a whirl and report back!