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The Everything 3D Printer Thread

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Black300zx

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Apr 8, 2019
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781
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Elkton, Md
The first big project was a full size BB-8.



Decided to tackle R2-D2 next.



Mythosaur skull is about 2 ft.



Took a break from the R2 project to print some practical things. I started doing Gridfinity for the toolbox drawers that hold smaller things.

20250311_230741.jpg
Once I get the TT swap on my Z done, I need to go on a gridfinity kick for my plier drawing and hex bits. That's a nice looking, functional drawer.


Been a while since I posted in here. Decided to pull the valves out of my heads while they're off and give them a quick lap to make sure the seats are still in good shape (should be....). My dad didn't have his OHC-style compressor anymore, so I printed out an insert to make this one work for me:

1742226573966.png

1742226599274.png
 

ed_

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Nov 5, 2019
Messages
183
Location
Maine
My ole reliable mk3s+ has been doing great and I've gotten it pretty dialed in at this point. I added a raspberry pi for Prusa link and have kept it mostly stock other than the silicon bed mod because the bed had about .6mm of variance and was causing me issues.
1.jpg

The only thing I want to change now is to make it faster and I was eyeballing the 3.5s upgrade kit but then I accidentally stumbled across a used mk3.5s with some issues for not much more and I couldn't say no because two printers is always better than one lol.
2.jpg

It had some silly issues like an incorrectly routed fan wire causing the x-axis calibration to fail since it was hitting the gantry.
4.jpg
And a broken y axis motor mount
3.jpg

But after printing out a new bracket on my mk3s and doing some tune ups (tightening the belts, cleaning off excessive grease on the rails, adjusting the PINDA, cleaning the bed since it was covered in buildup, and rerouting some of the wires I've got it printing good.

5.jpg

My only dilemma now is where to put the second printer
 

Cruzan80

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Jul 22, 2015
Messages
4,158
Location
Denver, CO
I got a broken craftsman MSA from another forum member (on a related forum), and re-modeled it...

Going to eventually print it in some Hi-temp CF Nylon (with supports in PA release filament). With the swapping needed for Bambu, it says it will take 22hrs (400+ filament swaps).
 

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Jehannum

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Took a breather on gridfinity to knock out a replacement head tilt worm gear for my new-to-me 1960s-era Rockwell 21-100 mill. My theory on why it ended up at auction with a perfectly serviceable table and tight ways is that someone tried to use the tilt head without slacking the lock bolts, and broke the gear, then they couldn't (easily) find a replacement, so they wheeled it outside, and left it.

I have a couple options to fix it, not the least of which is to just rebroach the original gear in a different spot, and then just not be able to rotate the head all 360 degrees (how that's useful, I'm not sure). The other option is a new part from Delta, which is $325. Not terrible.

Since I've made replacement parts for the zamak castings on my Atlas lathe out of Taulman Alloy 910 though, I haven't had any issues with durability, so I figured I'd give this cast aluminum part a go.

messages_0(11).jpeg

Going to put it in the tilt mechanism later and see if I need to adjust before making a final out of the good stuff (this one's PLA).
 

Cruzan80

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Are you hoping the PLA wears into the ) shape that the original teeth look to have? Or does it not matter? Or did you not want to mess with modeling it?

Sorry, early and no coffee leads to strange sentences...
 

Jehannum

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1,347
Location
Albuquerque, NM
Are you hoping the PLA wears into the ) shape that the original teeth look to have? Or does it not matter? Or did you not want to mess with modeling it?

Sorry, early and no coffee leads to strange sentences...
The tooth profile is a little awkward, as the tilting mechanism uses an ACME thread (found that out before I left for work this morning), and I'm using an involute gear library to generate the teeth. I can get the pitch and pressure angle correct with that library, but the profile isn't exactly right. I'm not sure whether it matters, in the overall scheme of things.

There's an ACME thread library, but it doesn't do worm and gear profiles, just worm and nut.

The standard is open, but the real question is whether, if I subtract a torus around the involute tooth profiles (to lop off the middle and get a closer top profile), I'm time ahead by just writing the correct library to the open ACME standard.

In the end, the worm is metal, the gear is plastic, and the plastic will wear to shape way easier than chasing a rabbit hole after the perfect fit for something that isn't under any tension in use, and is only as accurate as my eyeballs can read on the horizontal column's dial.
 

Cruzan80

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Jul 22, 2015
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Thanks for putting actual words to my ramblings. I agree with the wearing away, would just want to make sure wall thicknesses are deep enough it does end up breaking into infill.

Wasn't sure if a revolved cut shape (circle and then fillet/smooth edges) would get close enough.
 

Firstram

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May 16, 2017
Messages
1,390
I got a broken craftsman MSA from another forum member (on a related forum), and re-modeled it...

Going to eventually print it in some Hi-temp CF Nylon (with supports in PA release filament). With the swapping needed for Bambu, it says it will take 22hrs (400+ filament swaps).
Verify your purge volumes are high enough before you commit to a full ($$) print. I have had failed prints due to support filament contamination!
 

Jehannum

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May 3, 2012
Messages
1,347
Location
Albuquerque, NM
Thanks for putting actual words to my ramblings. I agree with the wearing away, would just want to make sure wall thicknesses are deep enough it does end up breaking into infill.

Wasn't sure if a revolved cut shape (circle and then fillet/smooth edges) would get close enough.
The teeth are all more than the number of walls thick, so they're solid. My settings for printing something like that would be 8 walls, 6 top and bottom walls, and then 40-60% infill, depending on the filament. That would render most of the important detail pieces pretty much solid plastic.
 

Jeff

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Dec 10, 2009
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2,706
Location
Sonova Beach
Found this tool organizer. Could be useful.

https://makerworld.com/en/models/1218327-hand-tool-organizer#profileId-1234650

2025-03-16_c59518ccf80e8.jpg
 

Jehannum

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May 3, 2012
Messages
1,347
Location
Albuquerque, NM
My son was using the CR10 that I gave to him, making dust caps for the eyepieces of his telescopes out of glow-in-the-dark PLA, and I have to say that's one of the best uses I've seen of that particular filament.

Worked out well, as we went down to Datil NM last weekend after visiting the VLA and he set up all his stuff so he could see the sky with no light pollution, and he didn't lose any of the caps (the originals were all long-gone, and they were, for some reason, black).
 

Jehannum

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May 3, 2012
Messages
1,347
Location
Albuquerque, NM
Got to a good place for my mill tilt mechanism:

messages_0(40).jpeg

Added a 1/4" (minus 0.2mm since it's a little tight right at size) woodruff key to the print, since the mill's key was missing.

In action:
messages_0(41).jpeg

I measured less than a degree of slop with my digital camber gauge, so I'm happy. There's more slop in the way the worm is mounted in the arbor than there is in the tooth engagement.
 
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lilscorpion

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Mar 15, 2010
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Colorado
I almost said something about printing caps in your thread! But I didn't want to nit-pick
Ha! I also need to make some that are angle cut - same tune but a 15* angle. Haven’t figured out how to do them in fusion yet. “Taper” in extrude tapers both sides. I need more of a parallelogram.

Here’s what inevitably use in the steel cart to make the material easier to find. They just finished printing about 10 minutes ago. Think they’re kinda cool.

IMG_5644.jpeg
 

Cruzan80

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Jul 22, 2015
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Denver, CO
While I am not sure about the modular part, the size increase, the updated AMS and dual nozzles are very intriguing. And for a not extreme price point, at that! I do think they will cannibalize the X1E sales with this.

Overall, the dual nozzles (while teased earlier), will be a huge leap forward if they can get the rest to say at the levels Bambu has offered before. The amount of waste when printing with support filament was insane, so this will definitely fill a need.

I am less convinced on the laser, espevially the 40W version. Usually those need a pretty good ventilation system, ideally to the outside.

Thinking I may need to order one for the school, to make sure we have the latest and greatest...
 

purplezr2

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Jun 1, 2010
Messages
5,290
Location
Central MN
While I am not sure about the modular part, the size increase, the updated AMS and dual nozzles are very intriguing. And for a not extreme price point, at that! I do think they will cannibalize the X1E sales with this.

Overall, the dual nozzles (while teased earlier), will be a huge leap forward if they can get the rest to say at the levels Bambu has offered before. The amount of waste when printing with support filament was insane, so this will definitely fill a need.

I am less convinced on the laser, espevially the 40W version. Usually those need a pretty good ventilation system, ideally to the outside.

Thinking I may need to order one for the school, to make sure we have the latest and greatest...
Pricing cheaper then I expected. Likely get one in the fall if they BF sale it at all. Let them work out the bugs/fill the supply chain.
 

Cruzan80

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Jul 22, 2015
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Denver, CO
Bambu h2d is 325mm, vs Prusa XL 360mm. Are you going to use the little bit extra?

Comparing apples-apples (XL w/ two toolheads, assembled and enclosed) is 1900<->3500. So almost 185% of the price from the H2D to the Prusa XL.
 

slodat

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Feb 6, 2010
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Central-ish, WA
Bambu h2d is 325mm, vs Prusa XL 360mm. Are you going to use the little bit extra?

Comparing apples-apples (XL w/ two toolheads, assembled and enclosed) is 1900<->3500. So almost 185% of the price from the H2D to the Prusa XL.
I have a two toolhead XL. I bought it factory assembled. I can not recommend it in good faith. The print quality is great. The reliability is just not there. And it hasn't been since I bought it. Prusa's support is awful at best. Their fanboi community doesn't make it any better. Mine mostly sits because the extruders need something changed since adding an enclosure. Extrusion randomly stops and the printer doesn't detect it.

If I understand the H2D correctly, a person could have the same filament in both nozzles and the long side is extended to 350mm.
 

jeepxj

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Mar 2, 2008
Messages
17,829
Bambu h2d is 325mm, vs Prusa XL 360mm. Are you going to use the little bit extra?

Comparing apples-apples (XL w/ two toolheads, assembled and enclosed) is 1900<->3500. So almost 185% of the price from the H2D to the Prusa XL.

Hummm now you got me thinking on the base model h2d. i gotta do some measuring.
 

jeepxj

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Mar 2, 2008
Messages
17,829
I have a two toolhead XL. I bought it factory assembled. I can not recommend it in good faith. The print quality is great. The reliability is just not there. And it hasn't been since I bought it. Prusa's support is awful at best. Their fanboi community doesn't make it any better. Mine mostly sits because the extruders need something changed since adding an enclosure. Extrusion randomly stops and the printer doesn't detect it.

If I understand the H2D correctly, a person could have the same filament in both nozzles and the long side is extended to 350mm.

making me reconsider now for sure.
 

Jehannum

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May 3, 2012
Messages
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Location
Albuquerque, NM
I've had dual nozzles before, and the only "killer app" for them was doing supports and main body out of different materials.

It may be an artifact of not having all the fancy shmancy AI stuff and running just straight up old Marlin (on a bed-slinger with the hot ends, axes, and bed on v-wheels and not linear rails), but it wasn't ever good enough to get me acceptable quality in same-layer extrusion in the part on the bed. The second nozzle was always just a little bit off.
 
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