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AbeFM
(@abefm)
Member
RE: You know you've been 3d printing too long when...
Posted by: Tim
Posted by: bobstro

So I'm beginning to wonder just how reliable the entire Prusa version of mesh leveling is.   It seems much less repeatable than Meniot's v3.6 with 7x7 ... I am now thinking Prusa somehow mucked up the code when they tried to add magnet comp (that also has zero effect when enabled/disabled).  That or they implemented the same lame curve fitting they've always done.

 

What's wrong with this picture?

 

Heh, I think I had the same connector issue.

 

When I first went to 7x7 MBL, it fixed things so I didn't have to use the wait-10-minutes/temperature/etc stuff anymore.

 

Recently, I find it's just a bit more picky, but I think that's due to using different materials on the textured bed - I was printing on the hairy edge and still had great luck with more prints AND no elephant foot.

In short, does the printer think the bed is level in the first place - i.e. it's variability and not just unlevel? I micro-leveled the bed (with the y-axis bolts instead of any washer thing) and it helped a lot (before the 7x7 thing).

I maintain an informal list of San Diego, CA 3D printing enthusiasts. PM me for details. If you include a contact email and I can add you to the informal mailing list.

Napsal : 15/07/2019 4:43 am
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(@)
Illustrious Member
RE: You know you've been 3d printing too long when...

If you want an experience in bad software design: turn off mesh level (remove the G80 from a gcode). Then try to adjust Live-Z ... lmao.  It should be possible, admittedly with less than ideal surface flatness. B 3.7.1 won't allow it. Each pass it adds the last Live-Z value and pretty soon you'e at -3.000 mm to get a 0.2mm layer 1, when you normally print with -0.600. Load a gcode with G80, and you bury the nozzle into the bed.

 

I tried it because I wanted to see just how bad my layer 1 would look without correction. I never was able to make it work.  And this is a pretty fundamental aspect of 3D printing.

Napsal : 15/07/2019 7:07 pm
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(@)
Illustrious Member
RE: You know you've been 3d printing too long when...

Another gripe is they use non-linear interpolation for the mesh level.  Not by itself a problem, but the don't do anything to control the asymptotic behaviors outside the measured points.  So the edges of the bed after a mesh level are essentially an uncalibrated no-mans land.  Sure, they "limit" the effect by down scaling the correction, but they do it across the entire bed.  So they do the mesh level, then clip the correction that should be applied to the mid area in an effort to limit the carnage done outside the measured locations.  Why not linearly interpolate an external ring of points and include those - then they could apply the full and more accurate interpolation everywhere.

This plot - a bit of an exaggerated over simplification - kind of shows what happens outside measured points:

This post was modified před 5 years by --
Napsal : 15/07/2019 7:14 pm
gnat
 gnat
(@gnat)
Noble Member
RE: You know you've been 3d printing too long when...

You know you've been 3d printing too long when you are all to happy to turn a humor thread into a technical discussion...

MMU tips and troubleshooting
Napsal : 15/07/2019 7:30 pm
Fabi a bobstro se líbí
RAH1
 RAH1
(@rah1)
Estimable Member
RE: You know you've been 3d printing too long when...
Posted by: stuart.b4

When someone asks if you remember loading computer games from cassette tapes and you think how great it'd be for something to only take 6 minutes and fail just 10% of the time.

That just means you are OLD.  LMAO

RAH

I am the inveterate tinkerer. I can tink up most anything.

Napsal : 15/07/2019 7:42 pm
RAH1
 RAH1
(@rah1)
Estimable Member
RE: You know you've been 3d printing too long when...
Posted by: vintagepc
Posted by: Tim

Needed to lift new center channel speak 2.5 inches ... so rather than use a couple plastic bins I have laying around, I'm printing pretty freshly designed unique speaker stands.  It even crossed my mind to go buy some pretty gold tone filament to match the TV stand... then thought sheesh - that's crazy.  So I went with silver.

I had a hell of a time finding room lights I liked. So I got some lamp cords, LED bulbs, and made my own to sit on top of some DETOLF display cabinets!

Me too.  I like this one and can't find it anywhere.  So I am working on it in CAD.  😉

RAH

Attachment removed

I am the inveterate tinkerer. I can tink up most anything.

Napsal : 15/07/2019 7:51 pm
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Illustrious Member
RE: You know you've been 3d printing too long when...
Posted by: gnat

You know you've been 3d printing too long when you are all to happy to turn a humor thread into a technical discussion...

Or not being able to tell the difference. 

Napsal : 15/07/2019 7:59 pm
gnat se líbí
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RE: You know you've been 3d printing too long when...
Posted by: RAHRAH

Me too.  I like this one and can't find it anywhere.  So I am working on it in CAD.  😉

RAH

Attachment removed

That's going to be a tough print... lol.

Napsal : 15/07/2019 8:00 pm
RAH1
 RAH1
(@rah1)
Estimable Member
RE: You know you've been 3d printing too long when...
Posted by: gnat

You know you've been 3d printing too long when you are all to happy to turn a humor thread into a technical discussion...

But that's about the best informed technical discussion disguised as a humor thread.  WOW.  Great discussion.  I will have to book mark it.  😎

 

RAH

 

I am the inveterate tinkerer. I can tink up most anything.

Napsal : 15/07/2019 8:03 pm
RAH1
 RAH1
(@rah1)
Estimable Member
RE: You know you've been 3d printing too long when...
Posted by: Tim
Posted by: RAHRAH

Me too.  I like this one and can't find it anywhere.  So I am working on it in CAD.  😉

RAH

Attachment removed

That's going to be a tough print... lol.

It's large but not out of the realm of possibility.  I would think I can get away with printing the spurs in 2 parts and each of the rings concentric.  It's a puzzle any way you look at it.  I may also print it in miniature to make it easier.  😉  I am waiting for a time I can get there and write down the exact dimensions.  It's a popular burger restaurant with an Automotive theme.

RAH

 

This post was modified před 5 years 2 times by RAH1

I am the inveterate tinkerer. I can tink up most anything.

Napsal : 17/07/2019 12:51 pm
cwbullet
(@cwbullet)
Member
RE: You know you've been 3d printing too long when...

that will need supports for sure. N

--------------------
Chuck H
3D Printer Review Blog

Napsal : 17/07/2019 1:02 pm
Sophiagracy
(@sophiagracy)
New Member
RE: Exactly I found this.

 

Posted by: @sembazuru
Posted by: Migamix

 

i have only been printing for about 1 year. ive gone full throttle into it. but yes, everything i look at now seems to have an "i need it, i'll make it"

A friend of mine got me this grungy tshirt from Amazon for my birthday:

https://www.amazon.com/3D-Printing-Shirt-Printer-T-Shirt/dp/B07L2QQLB6

(To be fair, I found it and put it on my wishlist...)

I also had it. I personally do 3d printing on shirts, cups & bags.

This post was modified před 3 years by Sophiagracy

An entrepreneur.

Napsal : 03/09/2021 9:56 am
cwbullet
(@cwbullet)
Member
Dreaming

When you start dreaming of fixes for that failed print.  

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Chuck H
3D Printer Review Blog

Napsal : 03/09/2021 11:55 am
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