You made me do this…
Vložit
- čas přidán 23. 06. 2022
- 3D printer ringing is a tricky problem to hunt down and fix - can your wacky suggestions after my last attempts improve them?
Thanks to Slice Engineering for sponsoring this video! Check out the LGX Ace and LGX Shortcut here go.toms3d.org/LGXSlice
Watch part I here: • Wobbly 3D printer make...
Read the article to this video here: toms3d.org/2022/07/13/you-mad...
Models shown:
Anti-vibration feet by schuetzi99 www.printables.com/model/1727...
3D Benchy by Creative Tools www.printables.com/model/2236...
Josef Prusa's pug Buddy www.printables.com/model/62-j...
Ringing Test Part by CNC Kitchen www.printables.com/model/8120...
Products used:
Creality Ender-3 v2 on Amazon go.toms3d.org/Ender3v2AMZ
Prusament PLA go.toms3d.org/Prusament
Product links are affiliate links - I may earn a commission on qualifying purchases (at no extra cost to you)
🎥 All my video gear toms3d.org/my-gear
I use Epidemic Sound, sign up for a 30-day free trial here share.epidemicsound.com/MadeWi...
🎧 Check out the Meltzone Podcast (with CNC Kitchen)! / @themeltzone
👐 Enjoying the videos? Support my work on Patreon! / toms3dp
Those sand containers are a great solution. Did you try adding the sand only to the static portions of the frame?
I still feel like the sand in the frame might marginally helps, but adding the "sand containers" to all of the moving parts really just serves to add weight and increase the problems.
Try removing the sand blocks from the moving parts. Keep them on the non-moving parts.
Not documenting "failures" is a huge problem in the medical industry b/c peeps don't want to embarrass themselves. Props to you for posting this. It helps inspire new hypotheses to come and still makes good content 👌
There's an amazing technique called "Motion Amplification" which uses special cameras and DSP to visually exaggerate imperceptible movements in video. It's used largely for identifying sources of resonance in structures and industrial machinery. I'd be fascinated to see it used on a 3D printer. I predict the main source of resonance is the belts.
The sand on a rapid-moving part was totally a mistake on my opinion. Getting down the rabit hole you could try with some mineral oil, like the ones that are inside car/bike suspensions...?
In the machine tool world, "epoxy granite" is used to fill machine frames to increase rigidity and dampening ability. It's basically just epoxy resin and sand. What the epoxy adds is it connects the mass of the sand to the structure, making it one. The aluminum extrusion with sand in it will ring nearly as much as without the sand as the sand is able to just move and allow the aluminum to move (ring).
FYI: I put a FDM printer on a $20K active dampening vibration table we use for laser alignment and it made no difference. I think the issue is amplitude and frequency is not consistent.
Tom, this is such a great video! No meaningful results are still results, just as you said. Only you would build a Suspensorium Love it! I'm chasing resonance reduction as well and would be interested in how different belts affect things. You are both thorough and entertaining and it is always a pleasure watching your videos.
Hmm, makes sense that you shouldn't put weight on the moving parts. So I'd try the same sand setup but excluding the print bed since it's moving quickly and weighting it gives more inertia so a higher probability of skips.
I’ve put my printer on a square of
Lol, you seemed so tired & disappointed by the end of the video, but you make a good point that even the failures are useful information! This has taught me that if I want to deal with vibration, I'm better off putting my time into brushing up on my old engineering courses rather than on messy, half-baked quick-fixes. Thanks for that!
I would recommend removing the sand from the print bed. Then, run the tests again: With Feet, without feet, and then suspended.
Love your honesty one of the reasons why we come to you you always keep it honest so we all don't go out to the store and buy lumber and try to make what you made lol I can only imagine how many people be trying to pull out their hair cuz they couldn't get what you have thanks again for keeping it honest and real
Yes definitely do a video on the belts please ...... Since I starting playing around with 3d printing and my velleman k8200 many years ago you have taught me so much, and are normally the go to videos when I have a problem or just want to improve something. Keep them coming and hope to see you around for many more years to come
Wow!
Or you could try Input Shaper, I sure hope that's where this is going, try a bunch of physical solutions, show they don't really work, then show the absolute magic of Input Shaper tuned with an ADXL.
Would absolutely love to see the belt comparisons
Another great video Tom.
tuned mass damper are also commonly used in skyscrapers to absorb vibrations from swaying in the wind. there's one in Taiwan where the architects famously decided to make it a tourist attraction - instead of tucking a concrete block away in some utility room they made the main damper a large shiny decorated sphere hanging in the middle of a big atrium.