3D Printing Today #537

[3D Printing Tips and Tricks]

News:
Velo3D Gets noncompliance notice from NYSE
https://3dprintingindustry.com/news/velo3d-receives-noncompliance-notice-from-the-new-york-stock-exchange-231742/
Segments:
Sharing sites lately, Stuck Sensors on the XL, Sketch Drawing quirk in Fusion360

Thing of the Week:
Reversible Ratcheting Pocket Hex Driver w/ Bit Storage
https://www.thingiverse.com/thing:6686786

threedprintingtoday.libsyn.com or
Search for 3D Printing Today wherever you get your podcasts

[Kurt The 3D Printer GUY!]

Interesting news item - especially since I've been seeing a Number of job postings on Indeed for Velo3D over time - and even a new job listing with them just this week. But, if they ARE having problems - working there right now may NOT be the Best option for me...

-K

[Kurt The 3D Printer GUY!]

As I was chatting directly with Andy about the Velo3D Printer, after hearing about him & Whitney talking about it in the podcast. So, I did a little digging around on the co. website and DID manage to find this video:   An Overview of Velo3D’s End-to-End Metal AM Solution on Vimeo

Now, on the website - they do indeed show that the print volume is essentially a cylindrical volume. It SEEMS that things are printed at the top of the volume - and that the powder is pushed Upwards. But, somehow - that does NOT seem to make sense. Since, in that case - if the laser shoots down from above - it would only be able to sinter the very top layer, how do they then sinter the layers under it. In the video - you SEE the mound of powder essentially rises up from a mainly flat bed. It is rather curious - and as noted on co. website - "Velo3D’s proprietary non-contact recoater"

Hmmm...

-K

[Sean]

This video shows an animation of a deposition wiper. I would assume the part bed falls and allows the next layer of powder to be deposited. The video Kurt shared is, I believe, the ejection cycle shown in this animation.

https://vimeo.com/724591581

Sean

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[Kurt The 3D Printer GUY!]

Sean - thanks for sharing that video - although, it's just a graphical thing - no real video of printing inside the machine. Funny how they show a wiping motion - even though website says Non-contact Recoater. Also, you're probably right - the video I showed is probably just purely the Ejection of the part. 

-K

[Kg08854]

Hi,

So, my limited understanding is. A) you can turn off the side or print head sensors B) if the side sensors are off your run out detection will require you to remove the Ptfe tube to pull the little bit of fillament out, possibly having an issue with clearing the last bit - so if you want to continue the model you need to use the side sensors unless you are useing spool join, then you just have the clear out to deal with.

C) Side sensors dont catch broken fillament in the Ptfe tube

D) Side sensors have to be off, and possibly the entire Ptfe tube bypassed to use TPU

So, there are two sensors in the path

The maint directions actually have you disassembly the side sensor to clean it (havent done that yet) - I guess the side sensor ‘cleans’ off the fillament :-) 

If you make a YouTube video showing us poor people how to clean out the printhead sensor I am sure I at least will watch it a bunch

Kurt-A 

[3D Printing Tips and Tricks]

Ack!! Too much work! Prusa really did not do its users a good design with the tool sensor at all!

If and when it happens… and it’s likely to happen when you get a tangle at the spool and the aggressive drive gear grinds into the filament and gunks the inner path up, my strongest recommendation is to clamp the planetary drive sub assembly together immediately after you remove the three screws and pull it off the bracket. This hold all the gears in place. The other thing that’s really bad is that you have to hold something on to the back of the stepper to shove it back into the planetary gear subassembly when you put it all back together. Also pay careful attention to the ball sensor subassembly orientation. The little tab goes inward.

Prusa should make a vid or at the very least publish detailed instructions on how to do it. I suggest COMPLAINING to them. 

[Kurt The 3D Printer GUY!]

Andy - AGREED! If people do NOT Complain enough to a company - to Let them know something SUCKS - there's Limited chances that the problem will get fixed!!!

-K

[Kurt The 3D Printer GUY!]

Darn - as I was writing that reply - I noticed AGAIN that a Message was Deleted from this Thread! Probably more Google Groups problems - as opposed to a Purposely Removed Message...

-K

[Kg08854]

I am SO not looking forward to this.  If it happens to me I may just take the printhead assembly off the printer and drive to Delaware to PrintedSolid and pay them to clear the jam :-)

Kurt-A

[3D Printing Tips and Tricks]

Ah, but the good news is I stepped on the land mines already! You'll know where to go to ask when you're not sure of what to do. Note I did not bother with the Prusa Forum. As I recall, if it were not for Jetguy, Dan, Whosa and so many others in the original Makerbot google group, I would have been lost.

[3D Printing Tips and Tricks]

BTW Kurt-A

IIRC you ordered the XL enclosure... right? As such you will have to tear down all of your tools to replace the PETG parts with PCCF parts anyways. Sorry.

On Saturday, August 10, 2024 at 2:46:27 PM UTC-7 Kg08854 wrote:

[Kg08854]

Yeah but I hope not to have planetary gears going off into outer space :-)

Kurt-A