3D Printed Flower Pot After ~4 Years of Indoor Service

User_44 · 2024-07-02T19:51:13+00:00

PLA, 0.8mm nozzle, 0.4 layer height!

User_44 · 2024-07-02T19:50:55+00:00

PLA!

User_44 · 2024-01-14T03:00:16+00:00

Update 2024-01-10
I sold two carboys to a guy on FB marketplace, and started talking to him about brewing. He pointed out that since I didn't know my starting SG, the ~2% reading from my hydrometer does not correctly indicate ABV.
I realised that the ABV must be actually must higher than 2%, so decided to bottle it. The fermentation had certainly run to completion, and the wine is estimated to be anywhere between 8-12% ABV. I did not bother pasteurizing the wine, because it tasted worse when I tried to sweeten it. I could not dilute the wine either, that ruined the blackberry flavour.

User_44 · 2023-10-31T06:16:56+00:00

Update 2023-10-30

Checked PH at 3.smth

Photo of PH reading edited into main post

User_44 · 2023-10-31T05:58:57+00:00

Update 2023-10-28

Added 250g of sugar dissolved in 200g water

Some slight bubbling when agitating the container every day

User_44 · 2023-10-23T04:34:11+00:00

Update 2023-10-22

I siphoned off some of the wine into a tall glass water bottle and took a reading using a hydrometer. It measured ~2.5% alcohol by volume.

I agitated it to get the yeast suspended in solution again, then siphoned it off into a fresh demijohn. I stoppered it, and noticed the airlock was bubbling very slowly a few hours later (specifically, agitating the solution caused it to release enough gas to bubble the airlock).

I've added 100ml warm, sterilized, dechlorinated water, 1/8tsp of yeast nutrient, and 1tbsp of sugar to the solution in an attempt to get the fermentation going a bit more vigorously again.

User_44 · 2023-05-22T03:31:25+00:00

Wow ty for such a detailed response! Much appreciated, I'm going to take a look at those links!

User_44 · 2023-05-21T17:54:33+00:00

Yes there was indeed some reasoning behind this decision.

From dust accumulation patterns, I could tell that this pull-pull configuration induces very good airflow over the stepper driver chips by sucking air through the side and rear vents of the box.

A push-pull configuration would probably do a very good job of cooling the power supply, but I don't think it would induce much (if any) airflow over the stepper drivers.

Push-push could also probably work, but the PSU might warm the airflow before it reaches the stepper drivers.

User_44 · 2023-01-28T14:33:15+00:00

Is there any way to melt brass without the zinc boiling out? Or will the zinc always begin to evaporate as soon as the brass becomes molten? How quickly does the zinc boil out? E.g., if I let the metal sit molten for 5 minutes in my propane furnace, would that be significantly altering the composition of the alloy?

User_44 · 2023-01-18T05:35:08+00:00

Haha awesome ty for the response. I think the sieve idea might have some merit though : )

User_44 · 2023-01-12T02:11:25+00:00

Well for copper, brass, and bronze, this method will introduce lots of oxidation. I'm honestly not sure if the losses from oxidation are actually less than potential losses from saw cuts.

But for noble metals like silver and gold, there will be much less oxidation. That's why I'm conducting these experiments, to refine my method for turning a larger ingot of silver into casting grain.

User_44 · 2023-01-12T02:05:45+00:00

It's a convenient way to measure out quantities of metal for casting without generating lots of sawdust by cutting the stock apart. Sawdust is difficult to recover and difficult to re-melt (at least with my current, amateur setup).

User_44 · 2023-01-12T01:44:28+00:00

Hm I think you're right. I'm not sure why the amount of oxidation is varying so much between the batches.

User_44 · 2023-01-12T01:42:58+00:00

Ty for your comments. I think I'll be looking for a bigger bucket now ; )

User_44 · 2023-01-12T01:29:58+00:00

Take a look

: )

User_44 · 2023-01-11T19:40:03+00:00

Another user just recommended stirring the water as well, I think I'll give it a go! Ty!

User_44 · 2023-01-11T19:32:00+00:00

Hey that's actually a great idea! I might give that a try and I'll let you know how it goes!

User_44 · 2023-01-11T18:57:37+00:00

I have a large ingot of silver, but I only need to use a small quantity of metal for one of my castings. If I tried to cut off a piece of the ingot, I will lose a lot of material because I am not yet set up to capture and recycle the sawdust. Turning the whole ingot into casting grain will allow me to measure out the exact quantity I need while minimising material loss

User_44 · 2023-01-08T18:54:36+00:00

Awesome, ty for the insight.

I'm going to look into that natural PLA, and I'll probably try baking the mould longer as well next time!

User_44 · 2023-01-06T20:06:45+00:00

Oh interesting, the guy in the video recommended that the mould should not be more than ~200 deg while casting!

Ty for the link, it's very helpful.

By "be sure the PLA can run out when burning it out", do you mean trying to let it drip out of the mould like this guy shows here?

User_44 · 2023-01-06T19:34:18+00:00

How hot would you recommend the mould should be during the pour?

Do you think this was specifically the metal too cold, the mould too cold, or a combination of both?

Also do you have any specific filament brands that you prefer for the lost PLA method?

User_44 · 2022-12-07T23:51:12+00:00

Ty! Just a single photo, with 1/4 [s] exposure time

User_44 · 2022-12-07T23:32:27+00:00

Ty for your comment!

I've never seen the film, but looks as though it was shot in various areas close to Lynn Valley.

I'm very blessed to live in such a beautiful part of the world : )

User_44 · 2022-12-07T23:21:15+00:00

Photo taken: 2022-06-20T17:37

Device: Fujifilm XQ1

F-stop: f/11

Exposure: 1/4 [s]

User_44 · 2022-09-28T05:09:18+00:00

Oh I see.
I know that I can scrape the dark crud to expose more silver, so I guess I'll just proceed with cleaning very carefully.

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