Paraloid B-72

https://en.wikipedia.org/wiki/Paraloid_B-72

76•Ariarule•2d ago

Comments

0xbadcafebee•1h ago

Huh. So it's a stronger, harder, less brittle, clear wood glue you can dissolve with acetone. Neat!

zdw•1h ago

This is the most esoteric post I've seen on HN in a while.

How many museum curators who need non-yellowing flexible thermoplastic are there on here?

kazin1870•1h ago

I use paraloid all the time, a bit surprised to see it posted here but I’ll support it.

boppo1•1h ago

I'm new to it and having trouble finding guides:

- how do I apply it as a coating? I want it to be ~ 1/6" to 1/8" thick and as hard as possible

- will turpentine dissolve or soften it?

halestock•1h ago

I found a couple:

https://resources.culturalheritage.org/osg-postprints/wp-con...

https://www.zoicpaleotech.com/pages/paraloid-b72-in-fossil-p...

acetone will dissolve it, dunno about turpentine.

boppo1•36m ago

I'm reading that turp does not dissolve it, which is ideal so I can mix paint on top of it.

chromacity•57m ago

It's a relatively soft plastic and I don't think you can realistically build a uniform, good-looking layer that's 1/8" thick, if that's what you mean. If you need that thickness, high hardness, and nice appearance, I think your best bet is just a sheet of glass or acrylic on top.

It can be used as protective varnish, but that would be a very thin layer, probably 0.1 mm or something like that.

boppo1•35m ago

Does it not level from gravity like other resins?

boppo1•1h ago

Oil painter here, this is news to me and if it doesn't dissolve in gamsol this is EXACTLY what I've been looking for for about 2 years.

card_zero•1h ago

I followed the link to flexographic ink, and now I'm wondering whether boutique fine art flexography could or should exist. Like lithography, but more plastic.

colordrops•1h ago

They should make non-yellowing transparent phone cases out of this stuff.

CarVac•30m ago

I've done some DIY piano maintenance and I saw what was presumably this available to firm up the hammers. My piano needs them softened, though.

FpUser•1h ago

Am I the only one that read it as Polaroid ;) ?

UncleOxidant•1h ago

No,you are not. I was expecting it to be a camera.

zephen•1h ago

I thought it was a cross between a camera and a bomber.

NDlurker•44m ago

Edwin Land, the inventor of the Polaroid, worked on the U2's camera.

https://otislibrarynorwich.org/2024/04/08/edwin-land-and-the...

https://www.smithsonianmag.com/innovation/polaroid-inventor-...

aidenn0•47m ago

How does its strength compare to MMA structural adhesives? What materials is it compatible with?

CarVac•32m ago

Heh, I upvoted this a few days ago and it must've gotten on the second-chance queue.

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Paraloid B-72

Comments

Google plans to invest up to $40B in Anthropic

Paraloid B-72

Humpback whales are forming super-groups

My audio interface has SSH enabled by default

Iliad fragment found in Roman-era mummy

Sabotaging projects by overthinking, scope creep, and structural diffing

Replace IBM Quantum back end with /dev/urandom

The Classic American Diner

Education must go beyond the mere production of words

There Will Be a Scientific Theory of Deep Learning

Work with the garage door up (2024)

"Plain text has been around for decades and it's here to stay." – Unsung

Reverse-engineering infrared-based electronic shelf labels

How to be anti-social – a guide to incoherent and isolating social experiences

Show HN: I've built a nice home server OS

Firefox Has Integrated Brave's Adblock Engine

Email could have been X.400 times better

MacBook Neo and how the iPad should be

The Overtom Chess Computer Museum

(Blender) Cosmology with Geometry Nodes

Diatec, known for its mechanical keyboard brand FILCO, has ceased operations

DeepSeek v4

I'm done making desktop applications (2009)

FusionCore: ROS 2 sensor fusion (IMU and GPS and encoders)

I cancelled Claude: Token issues, declining quality, and poor support

You don't want long-lived keys

Google Flow Music

CC-Canary: Detect early signs of regressions in Claude Code

SDL Now Supports DOS

Show HN: Browser Harness – Gives LLM freedom to complete any browser task