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3D Printing General Discussion (merged)


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4 hours ago, PaganMegan said:

The Jupiter feeds from the resin bottle, so it's around.

I seen some files a few weeks ago in regards to setting up a feed system for resin printing. So you've got the DIY option as well.

 

 

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Looks like Elegoo is hitting with full force here

 

Saturn 3 Ultra - 12K mono LCD | 3x Faster Speed

Saturn 3 - 12K mono LCD | Fresnel Collimating Light

Neptune 4 Pro - 500mm/s Max Speed | Intelligent Segmented Heatbed

Neptune 4 - 500mm/s Max Speed | 300°C High-temp Nozzle

Mars 4 Ultra - 9K mono LCD | 3x Faster Speed

Mars 4 - 9K mono LCD | COB Light Source

Mars Mate - Air Purifier | High Purification Efficiency

 

 

Interesting that they're coming out with an air purifier.

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I’m glad I didn’t end up getting a Neptune 3. It was only because my Mars 3 died and I upgraded to a Saturn 2 that made me hold off.

 

The most recent round of improvements to FDM printers across all manufacturers seems to be a massive step up, particularly in speed, which will make a huge difference to print times. A print taking 18 hours instead of 2 days is a lot of time saved.

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On 6/1/2023 at 3:14 PM, Olaf the Stout said:

I’m glad I didn’t end up getting a Neptune 3. It was only because my Mars 3 died and I upgraded to a Saturn 2 that made me hold off.

 

The most recent round of improvements to FDM printers across all manufacturers seems to be a massive step up, particularly in speed, which will make a huge difference to print times. A print taking 18 hours instead of 2 days is a lot of time saved.

The most important thing isn't being mentioned though - acceleration.  You can tell a printer to print stupid fast, but if the acceleration isn't there as well, you won't really see much in the way of benefits to print time.  This also requires higher torque stepper motors, as well as for them to have lower.. Argh, I forgot the term, I think it's inductance but I might be wrong - basically the ability for a stepper motor to change what it's doing more readily, without the coils fighting back as much. 

 

Then there's the motion system.  You can go fast, and there are many people out there with working i3 style designs that really do go fast, and are able to yeet the moving bed back and forth at a surprisingly quick pace, but keeping everything within tolerance gets exponentially harder the faster you go.  Then there's the part strength issues and quality of finish starting to crop up now that speed is the main focus of a lot of manufacturers (Stefan aka CNC Kitchen did a video on this behaviour he was noticing on a few printers, but especially the Bambu Labs ones). 

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You can get steppers to accellerate better if you overvolt them.   (saturates the coils faster or some techbabble like that. ) 

 

The steppers in my ShapeOKO CNC router is nominally 12V, but I'm running them at 48V.  

Instead of 60mm/s, it can do 2000...    

Yes, regular NEMA17 steppers.  

 

I run them at 48V because I have a 48V PSU. The spindle is a 300W 'quiet cut' Chinese aircooled spindle, which just so happens to be rated at 48V.   

 

My DreamMaker Overlord Pro Delta printer runs the steppers at 24V. And because it uses a Bowden type extruder, the hot end is much lighter so there's less issues with inertia. It ran beautifully at 100mm/s, and printed decently at 150mm/s. 

 

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4 hours ago, TheAuldGrump said:

That moment when you are considering a mini for a Mordheim Mercenary Captain, then go... wait, is that a pack of cigarettes in the band of his helmet? https://youtu.be/nDEP3jhXSok

 

The Auld Grump

 

Could be a pack of band aids, a holy book, an ammo clip?

It does look a bit odd on a medieval type mini.

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Well, I guess the great thing about 3d prints is if one gets broken, you can always re-print it. I had a cardboard flat of minis that I primed a couple days ago sitting on the table, out of the way. I came to get them this afternoon & one of them had modular hands that were broken off. Something must have gotten close enough to smack that mini, I have no clue. I'm not printing as much as I was before right now, so it kinda of a pain to print replacements as I need to find things to fill the plate up, ha ha.

 

Normally my Weds night players just use dice for summoned creatures or spiritual weapons, so I went ahead & printed up those, along with what I needed to replace. Now I just gotta do it all over again.

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So a ad for a 3d patreon(tribe?) came up on Bookeyface the other day & normally I try to steer clear of ads, but it had a link to a free texture stl. It's a box of various objects that you can test various paints on, perfect for contrast-style paints.

 

Custom Miniature Maker is the name of the maker/newsletter I signed up & this is what the file looks like:

 

c545c5b8-4a7c-f695-f9a1-9d2a235a4a8d.jpg

 

The file in it's orginal is huge thou! Allot bigger then what I can handle with my Mini4k. So I'll have to re-size & put the supports on myself if I wanna use this for my painting (which I do!).

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