3D Printing Today #481

[3D Printing Tips and Tricks]

News: 

Creality fights back

https://store.creality.com/products/k1-speedy-3d-printer?spm=..index.product_list_1.1&spm_prev=..index.header_1.1

Segments: 

PETG/PLA Dense Support, Bambu Extruder, Ideas for printing in Zero G

Thing of the Week: 

Rc Sailing Catamaran

https://massivedimension.com/products/mdac1-3d-printing-cell

threedprintingtoday.libsyn.com or 

Search for 3D Printing Today wherever you get your podcasts

[3D Printing Tips and Tricks]

Ooops Forgot the pics...

[Bert Schmitz]

Love the podcast.  You guys speculated on what the array of strain sensors and LIDAR does for the hands free bed leveling on the Creality K1.  I can't speak for the K1, but I have been using a Bambu X1 Carbon and can tell you what I observe.

The Bambu X1 spends 7 minutes before it starts a print going through the filament loading, nozzle cleaning, vibration resonance testing, flow calibration, and hands free bed leveling,  The bed leveling is a two step process.  First it taps the nozzle to the bed in 25 places.  The bed has 3 ceramic force sensors used to detect contact with the nozzle (https://wiki.bambulab.com/en/x1/maintenance/replace-the-heatbed-force-sensor) .  Then it uses the LIDAR to scan the bed only where the print will be on the bed surface. I suspect the LIDAR scan of where the print will appear is also used for comparison to the LIDAR scan during the first layer inspection.

The Bambu web site says the following (https://bambulab.com/en/x1, scrolling way down in Chapter 2):

• Dual automated bed leveling for doubly guaranteed prints. 
  • Bambu Lab X1 utilizes two sets of independent sensors and an algorithm to measure the height of the nozzle relative to the bed.
  • The lidar and analog force sensors crosscheck for an extra layer of redundancy in bed leveling.

The Creality K1 web page is probably alluding to a similar process.

The first layer I get with the X1 even for really large X-Y geometries is always beautiful.  So however they do it, it works really well.  You can see the Z lead screws adjust the bed during the print as the head traverses in X-Y to keep the bed at the exact distance from the nozzle.

[Jody Harris (imhavoc)]

Not-zero G printing idea:

Put the printer in a powered gimbal and have g-code generated to  rotate the printer so that it's always extruding opposite gravity.

I'm sure Whitney can whip that up in CAD in 15 minutes! Andy can rewrite a slicer for the extra servos. No problem!

[darrel...@gmail.com]

You mean like this:

https://3dprint.com/1167/mx3d-metal-anti-gravity-3d-printer-unveiled/

[Dan Flemming]

Jaw dropped, saliva oozing out...

That's a great start for sure.

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