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Paraloid B-72 (en.wikipedia.org)
zdw 6 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 3 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 5 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 5 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 5 hours ago [-]
I use paraloid all the time, a bit surprised to see it posted here but I’ll support it.
boppo1 5 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 5 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 5 hours ago [-]
Does it not level from gravity like other resins?
halestock 5 hours ago [-]
boppo1 5 hours ago [-]
I'm reading that turp does not dissolve it, which is ideal so I can mix paint on top of it.
4 hours ago [-]
CarVac 5 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 5 hours ago [-]
They should make non-yellowing transparent phone cases out of this stuff.
CarVac 5 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 4 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 6 hours ago [-]
Huh. So it's a stronger, harder, less brittle, clear wood glue you can dissolve with acetone. Neat!
aidenn0 5 hours ago [-]
How does its strength compare to MMA structural adhesives? What materials is it compatible with?
shermantanktop 1 hours ago [-]
My only expansion for MMA is “mixed martial arts” and I’m not particularly familiar with it. Maybe there’s a wrestling move called the “structural adhesive”?
Joel11 2 hours ago [-]
Thanks for Sharing this information.
FpUser 6 hours ago [-]
Am I the only one that read it as Polaroid ;) ?
perilunar 25 minutes ago [-]
I thought it was going to be about a bomber with a parabolic-shaped wing, or something similar.
UncleOxidant 6 hours ago [-]
No,you are not. I was expecting it to be a camera.
zephen 6 hours ago [-]
I thought it was a cross between a camera and a bomber.
NDlurker 5 hours ago [-]
tgrowazay 4 hours ago [-]
Polaroid for B-72 bomber
mesonwarrior 3 hours ago [-]
[dead]
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