[hackpgh-discuss] Re: watertight 3d printing
- From: "j. eric townsend" <jet@xxxxxxxxxxxx>
- To: hackpgh-discuss@xxxxxxxxxxxxx
- Date: Thu, 26 Jan 2017 19:38:02 -0500
On 1/26/17 18:31, Steven Owens wrote:
What I was suggesting before, in (the likely) case I wasn't clearly
expressing myself, was cutting out a folding box outline, i.e. some
design sorta like this (this design is probably too cubical, but it
gets the idea across)
There's an entire art to sheet metal work that applies to plastic. I've
watched some demos on youtube and think I need to take "sheet metal 101".
If you really need watertight, I would follow the advice of 3d printing
a protype and making a mold from that then casting.
Beeswax was used a lot historically, to seal leather or wood or even
canvas. For example leather flagons.
Propolis, also known as "bee glue", and often confused with beeswax, is
to beeswax what cyanoacrylate is to white glue. I can't even wash it
off my hands using any soap that's safe for bare skin. Bees use it as
caulk in a hive, to the point that if a rodent or insect dies within the
hive they just "caulk over it" with propolis. It's also a great
medicine (for humans) and part of the bee self-defense system for microbes.
Downside: I can sell it for aound $600/lb if I time the market. I'm
lucky to get a few ounces per year when we pull honey from the hives.
But before the mid 19th century, when we destroyed hives to get the
honey, it was in good supply.
--
J. Eric Townsend
<
http://www.flatline.net>
HF: KC3HSO
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