Hacker News

113 points by Ariarule 4 days ago | 22 comments

zdw 4 hours 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?

aejm 2 hours ago

This post has exactly zero relevance to my professional career or personal projects, and this is exactly the type of esoteric content I love about HN!

boppo1 4 hours 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 3 hours 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.

kazin1870 4 hours ago

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

boppo1 4 hours 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?

chromacity 3 hours 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 3 hours ago

Does it not level from gravity like other resins?

halestock 3 hours 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 3 hours ago

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

CarVac 3 hours 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.

colordrops 3 hours ago

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

Joel11 24 seconds ago

Thanks for Sharing this information.

CarVac 3 hours ago

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

Links to obsure but interesting Wikipedia articles are some of my favorite HN posts.

Xmd5a 2 hours ago

Could this be used to 3D print supports ? For now, the only thermoplastic I know of that can be used to this effect is HIPS in conjunction with d-limonene.

0xbadcafebee 4 hours ago

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

aidenn0 3 hours ago

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

FpUser 4 hours ago

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

UncleOxidant 4 hours ago

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

zephen 4 hours ago

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

NDlurker 3 hours ago

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