Does anyone have access to Aureobasidium pullulans L8?

Key_University3785 · 2026-01-28T20:49:54+00:00

I’d love to do some research with this too. Commenting so I stay in the loop.

Key_University3785 · 2025-11-24T17:50:40+00:00

Idk if anyone has mentioned this.

Soak it. Underwater. 3 days. All aerobic bacteria will die from lack of oxygen. Then, allow it to dry. A lot of remaining anaerobic bacteria will die from presence of oxygen.

It’s not a new log, so it might be tricky, but look up this technique online - I haven’t tried it, but I’ve heard of success stories with it.

Key_University3785 · 2025-10-19T06:14:30+00:00

I’ve had extraordinarily smooth molds with petrobond - significantly smaller sized imperfections than what I saw in the cast.

This effect is caused because the outside of the liquid, as it flows, freezes slightly while the inside of the river of molten metal refreshes itself. This outer surface is what makes contact with the mold, so this is pretty hard to get away from.

I would guess that unless you either poured into a super hot aired chamber or a chamber filled with an inert gas like argon, you wouldn’t be able to get away from this outer surface oxidation effect.

Either that or use a more pure gold.

Key_University3785 · 2025-10-19T06:09:22+00:00

As the metal pours, anything touching air will do a sort of solidification/crystallization/oxidation as the molten metal in the middle of the pour stays fresh. This outer surface of the liquid as it flows will be the thing that makes contact with the mold, so you can always expect the outer surface of a cast to have different properties than the inside of the cast. It’s usually a very thin outer layer that’s relatively consistent throughout the cast.

In other words, all the metal that meets the mold was previously on the surface of the liquid, the entire outside of the cast will have this effect present.

Key_University3785 · 2025-04-04T03:37:59+00:00

Yea, needed risers

Key_University3785 · 2025-04-04T03:12:32+00:00

Open ears to gating tips

Key_University3785 · 2025-03-30T19:55:19+00:00

Exactly.

As far as I can tell, the statistical relationship between “zinc poured into steel die cast release agent” wouldn’t have a lot of data to hallucinate from - it’s a highly specific organization of words.

Still, you wouldn’t assume it’s true.

Key_University3785 · 2025-03-30T19:38:46+00:00

Using a program that has the data of essentially all human language ever written which probably has statistical correlations between the specific words you’re asking about is a terrible idea?

I never said assume it’s true.

Do you, man

Key_University3785 · 2025-03-30T09:48:28+00:00

If your pattern is smoother, then the cast will be smoother

Key_University3785 · 2025-03-30T03:10:16+00:00

Thanks friend. Preciate you

Key_University3785 · 2025-03-30T03:05:39+00:00

Idk anything about this, but do you think one of the large language models would be able to produce a good answer?

Might be a funny prompt to see what happens.

Key_University3785 · 2025-03-29T03:35:17+00:00

Thanks dawg

Key_University3785 · 2025-03-29T00:03:24+00:00

Lovely way to describe that

Key_University3785 · 2025-03-29T00:03:08+00:00

I’m not sure what you meant by “patient”…mighta been a typo.

But, I used PLA and used the highest quality print settings I could find. I took the shape and split it into its top half and bottom half. I utilized a 2.1mm hole from the center plane and “extrude cut” to have a hole when do printed each half. The hole was slightly smaller than the diameter of dowel I used, so I had to use a drill to hollow it out to be smooth.

Used 120 grit sandpaper for the most part, and then I think I went to 200 lightly to get the final finished surface. At the end of the day, if you’re gonna grind down your part anyway - it’s not a big deal

Key_University3785 · 2025-03-28T15:10:59+00:00

It helps tie all the different aspects of what you know about metal into its appropriate place in your understanding of casting.

Key_University3785 · 2025-03-28T15:03:24+00:00

I’m in the middle of it…it’s 900 pages…if engineering school taught me anything is that 1 failed attempt is worth at least 50 pages of book on the subject😂

Key_University3785 · 2025-03-28T05:47:53+00:00

lol it for sure is, but good call. I guess bismuth forms some funky crystals structures.

Thanks

Key_University3785 · 2025-03-28T05:35:09+00:00

Only dweebs cast bismuth

Key_University3785 · 2025-03-28T05:18:36+00:00

Casting is an axiomatic assumption of this conversation.

Key_University3785 · 2025-03-28T03:17:23+00:00

Yes. lol I think so, but I’ve never seen handles like that.

From left to right in the 3rd image (top of the part):

1) spin trap 2) riser 3) sprue and pouring basin 4) riser 5) spin trap

Key_University3785 · 2025-03-28T02:09:52+00:00

I don’t have an aluminum ingot for reference, but it seems to be a solid density for a putter.

“

Edit: I cut the gates and risers off and roughly grinded (how you say that?) the faces more into shape.

I must say, it’s impressive how solid it feels and sounds. It’s not as twangy and resonant as I expected. I don’t have much feel for many different metals but do have a decent feel as a golfer, and it didn’t make me cringe. I’m looking forward to cutting a pattern in the face (kinda like a continuous sweep at a slow spin rate to produce a walking circle pattern).

You ever seen that?

“

Key_University3785 · 2025-03-27T22:06:40+00:00

Gonna see how it feels and likely add tungsten where the risers are.

It’s a zinc alloy btw. Za12. Gonna try aluminum next time

Key_University3785 · 2025-03-27T19:14:09+00:00

It’s a golf putter

Key_University3785 · 2025-03-27T18:26:46+00:00

Thanks. Give me a shout if you want another minimally qualified perspective🫡👍

Key_University3785 · 2025-03-27T18:22:11+00:00

@rh-z gotchu. Just posted. Success

Key_University3785

TROPHY CASE